feat(stores): Vector store backend (#1795)

Add simple vector store backend

Signed-off-by: Richard Palethorpe <io@richiejp.com>

.editorconfig

@@ -0,0 +1,31 @@
+
+root = true
+
+[*]
+indent_style = space
+indent_size = 2
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.go]
+indent_style = tab
+
+[Makefile]
+indent_style = tab
+
+[*.proto]
+indent_size = 2
+
+[*.py]
+indent_size = 4
+
+[*.js]
+indent_size = 2
+
+[*.yaml]
+indent_size = 2
+
+[*.md]
+trim_trailing_whitespace = false

Makefile

@@ -159,6 +159,7 @@ ALL_GRPC_BACKENDS+=backend-assets/grpc/llama-ggml
 ALL_GRPC_BACKENDS+=backend-assets/grpc/gpt4all
 ALL_GRPC_BACKENDS+=backend-assets/grpc/rwkv
 ALL_GRPC_BACKENDS+=backend-assets/grpc/whisper
+ALL_GRPC_BACKENDS+=backend-assets/grpc/local-store
 ALL_GRPC_BACKENDS+=$(OPTIONAL_GRPC)
 
 GRPC_BACKENDS?=$(ALL_GRPC_BACKENDS) $(OPTIONAL_GRPC)
@@ -333,7 +334,7 @@ prepare-test: grpcs
 
 test: prepare test-models/testmodel.ggml grpcs
 	@echo 'Running tests'
-	export GO_TAGS="tts stablediffusion"
+	export GO_TAGS="tts stablediffusion debug"
 	$(MAKE) prepare-test
 	HUGGINGFACE_GRPC=$(abspath ./)/backend/python/sentencetransformers/run.sh TEST_DIR=$(abspath ./)/test-dir/ FIXTURES=$(abspath ./)/tests/fixtures CONFIG_FILE=$(abspath ./)/test-models/config.yaml MODELS_PATH=$(abspath ./)/test-models \
 	$(GOCMD) run github.com/onsi/ginkgo/v2/ginkgo --label-filter="!gpt4all && !llama && !llama-gguf"  --flake-attempts $(TEST_FLAKES) --fail-fast -v -r $(TEST_PATHS)
@@ -387,6 +388,11 @@ test-stablediffusion: prepare-test
 	TEST_DIR=$(abspath ./)/test-dir/ FIXTURES=$(abspath ./)/tests/fixtures CONFIG_FILE=$(abspath ./)/test-models/config.yaml MODELS_PATH=$(abspath ./)/test-models \
 	$(GOCMD) run github.com/onsi/ginkgo/v2/ginkgo --label-filter="stablediffusion" --flake-attempts 1 -v -r $(TEST_PATHS)
 
+test-stores: backend-assets/grpc/local-store
+	mkdir -p tests/integration/backend-assets/grpc
+	cp -f backend-assets/grpc/local-store tests/integration/backend-assets/grpc/
+	$(GOCMD) run github.com/onsi/ginkgo/v2/ginkgo --label-filter="stores" --flake-attempts 1 -v -r tests/integration
+
 test-container:
 	docker build --target requirements -t local-ai-test-container .
 	docker run -ti --rm --entrypoint /bin/bash -ti -v $(abspath ./):/build local-ai-test-container
@@ -536,6 +542,9 @@ backend-assets/grpc/whisper: sources/whisper.cpp sources/whisper.cpp/libwhisper.
 	CGO_LDFLAGS="$(CGO_LDFLAGS) $(CGO_LDFLAGS_WHISPER)" C_INCLUDE_PATH=$(CURDIR)/sources/whisper.cpp LIBRARY_PATH=$(CURDIR)/sources/whisper.cpp \
 	$(GOCMD) build -ldflags "$(LD_FLAGS)" -tags "$(GO_TAGS)" -o backend-assets/grpc/whisper ./backend/go/transcribe/
 
+backend-assets/grpc/local-store: backend-assets/grpc
+	$(GOCMD) build -ldflags "$(LD_FLAGS)" -tags "$(GO_TAGS)" -o backend-assets/grpc/local-store ./backend/go/stores/
+
 grpcs: prepare $(GRPC_BACKENDS)
 
 DOCKER_IMAGE?=local-ai

backend/backend.proto

@@ -18,6 +18,48 @@ service Backend {
   rpc TTS(TTSRequest) returns (Result) {}
   rpc TokenizeString(PredictOptions) returns (TokenizationResponse) {}
   rpc Status(HealthMessage) returns (StatusResponse) {}
+
+  rpc StoresSet(StoresSetOptions) returns (Result) {}
+  rpc StoresDelete(StoresDeleteOptions) returns (Result) {}
+  rpc StoresGet(StoresGetOptions) returns (StoresGetResult) {}
+  rpc StoresFind(StoresFindOptions) returns (StoresFindResult) {}
+}
+
+message StoresKey {
+  repeated float Floats = 1;
+}
+
+message StoresValue {
+  bytes Bytes = 1;
+}
+
+message StoresSetOptions {
+  repeated StoresKey Keys = 1;
+  repeated StoresValue Values = 2;
+}
+
+message StoresDeleteOptions {
+  repeated StoresKey Keys = 1;
+}
+
+message StoresGetOptions {
+  repeated StoresKey Keys = 1;
+}
+
+message StoresGetResult {
+  repeated StoresKey Keys = 1;
+  repeated StoresValue Values = 2;
+}
+
+message StoresFindOptions {
+  StoresKey Key = 1;
+  int32 TopK = 2;
+}
+
+message StoresFindResult {
+  repeated StoresKey Keys = 1;
+  repeated StoresValue Values = 2;
+  repeated float Similarities = 3;
 }
 
 message HealthMessage {}

backend/go/stores/debug.go

@@ -0,0 +1,14 @@
+//go:build debug
+// +build debug
+
+package main
+
+import (
+	"github.com/rs/zerolog/log"
+)
+
+func assert(cond bool, msg string) {
+	if !cond {
+		log.Fatal().Stack().Msg(msg)
+	}
+}

backend/go/stores/main.go

@@ -0,0 +1,26 @@
+package main
+
+// Note: this is started internally by LocalAI and a server is allocated for each store
+
+import (
+	"flag"
+	"os"
+
+	grpc "github.com/go-skynet/LocalAI/pkg/grpc"
+	"github.com/rs/zerolog"
+	"github.com/rs/zerolog/log"
+)
+
+var (
+	addr = flag.String("addr", "localhost:50051", "the address to connect to")
+)
+
+func main() {
+	log.Logger = log.Output(zerolog.ConsoleWriter{Out: os.Stderr})
+
+	flag.Parse()
+
+	if err := grpc.StartServer(*addr, NewStore()); err != nil {
+		panic(err)
+	}
+}

backend/go/stores/production.go

@@ -0,0 +1,7 @@
+//go:build !debug
+// +build !debug
+
+package main
+
+func assert(cond bool, msg string) {
+}

backend/go/stores/store.go

@@ -0,0 +1,507 @@
+package main
+
+// This is a wrapper to statisfy the GRPC service interface
+// It is meant to be used by the main executable that is the server for the specific backend type (falcon, gpt3, etc)
+import (
+	"container/heap"
+	"fmt"
+	"math"
+	"slices"
+
+	"github.com/go-skynet/LocalAI/pkg/grpc/base"
+	pb "github.com/go-skynet/LocalAI/pkg/grpc/proto"
+
+	"github.com/rs/zerolog/log"
+)
+
+type Store struct {
+	base.SingleThread
+
+	// The sorted keys
+	keys [][]float32
+	// The sorted values
+	values [][]byte
+
+	// If for every K it holds that ||k||^2 = 1, then we can use the normalized distance functions
+	// TODO: Should we normalize incoming keys if they are not instead?
+	keysAreNormalized bool
+	// The first key decides the length of the keys
+	keyLen int
+}
+
+// TODO: Only used for sorting using Go's builtin implementation. The interfaces are columnar because
+// that's theoretically best for memory layout and cache locality, but this isn't optimized yet.
+type Pair struct {
+	Key   []float32
+	Value []byte
+}
+
+func NewStore() *Store {
+	return &Store{
+		keys:              make([][]float32, 0),
+		values:            make([][]byte, 0),
+		keysAreNormalized: true,
+		keyLen:            -1,
+	}
+}
+
+func compareSlices(k1, k2 []float32) int {
+	assert(len(k1) == len(k2), fmt.Sprintf("compareSlices: len(k1) = %d, len(k2) = %d", len(k1), len(k2)))
+
+	return slices.Compare(k1, k2)
+}
+
+func hasKey(unsortedSlice [][]float32, target []float32) bool {
+	return slices.ContainsFunc(unsortedSlice, func(k []float32) bool {
+		return compareSlices(k, target) == 0
+	})
+}
+
+func findInSortedSlice(sortedSlice [][]float32, target []float32) (int, bool) {
+	return slices.BinarySearchFunc(sortedSlice, target, func(k, t []float32) int {
+		return compareSlices(k, t)
+	})
+}
+
+func isSortedPairs(kvs []Pair) bool {
+	for i := 1; i < len(kvs); i++ {
+		if compareSlices(kvs[i-1].Key, kvs[i].Key) > 0 {
+			return false
+		}
+	}
+
+	return true
+}
+
+func isSortedKeys(keys [][]float32) bool {
+	for i := 1; i < len(keys); i++ {
+		if compareSlices(keys[i-1], keys[i]) > 0 {
+			return false
+		}
+	}
+
+	return true
+}
+
+func sortIntoKeySlicese(keys []*pb.StoresKey) [][]float32 {
+	ks := make([][]float32, len(keys))
+
+	for i, k := range keys {
+		ks[i] = k.Floats
+	}
+
+	slices.SortFunc(ks, compareSlices)
+
+	assert(len(ks) == len(keys), fmt.Sprintf("len(ks) = %d, len(keys) = %d", len(ks), len(keys)))
+	assert(isSortedKeys(ks), "keys are not sorted")
+
+	return ks
+}
+
+func (s *Store) Load(opts *pb.ModelOptions) error {
+	return nil
+}
+
+// Sort the incoming kvs and merge them with the existing sorted kvs
+func (s *Store) StoresSet(opts *pb.StoresSetOptions) error {
+	if len(opts.Keys) == 0 {
+		return fmt.Errorf("no keys to add")
+	}
+
+	if len(opts.Keys) != len(opts.Values) {
+		return fmt.Errorf("len(keys) = %d, len(values) = %d", len(opts.Keys), len(opts.Values))
+	}
+
+	if s.keyLen == -1 {
+		s.keyLen = len(opts.Keys[0].Floats)
+	} else {
+		if len(opts.Keys[0].Floats) != s.keyLen {
+			return fmt.Errorf("Try to add key with length %d when existing length is %d", len(opts.Keys[0].Floats), s.keyLen)
+		}
+	}
+
+	kvs := make([]Pair, len(opts.Keys))
+
+	for i, k := range opts.Keys {
+		if s.keysAreNormalized && !isNormalized(k.Floats) {
+			s.keysAreNormalized = false
+			var sample []float32
+			if len(s.keys) > 5 {
+				sample = k.Floats[:5]
+			} else {
+				sample = k.Floats
+			}
+			log.Debug().Msgf("Key is not normalized: %v", sample)
+		}
+
+		kvs[i] = Pair{
+			Key:   k.Floats,
+			Value: opts.Values[i].Bytes,
+		}
+	}
+
+	slices.SortFunc(kvs, func(a, b Pair) int {
+		return compareSlices(a.Key, b.Key)
+	})
+
+	assert(len(kvs) == len(opts.Keys), fmt.Sprintf("len(kvs) = %d, len(opts.Keys) = %d", len(kvs), len(opts.Keys)))
+	assert(isSortedPairs(kvs), "keys are not sorted")
+
+	l := len(kvs) + len(s.keys)
+	merge_ks := make([][]float32, 0, l)
+	merge_vs := make([][]byte, 0, l)
+
+	i, j := 0, 0
+	for {
+		if i+j >= l {
+			break
+		}
+
+		if i >= len(kvs) {
+			merge_ks = append(merge_ks, s.keys[j])
+			merge_vs = append(merge_vs, s.values[j])
+			j++
+			continue
+		}
+
+		if j >= len(s.keys) {
+			merge_ks = append(merge_ks, kvs[i].Key)
+			merge_vs = append(merge_vs, kvs[i].Value)
+			i++
+			continue
+		}
+
+		c := compareSlices(kvs[i].Key, s.keys[j])
+		if c < 0 {
+			merge_ks = append(merge_ks, kvs[i].Key)
+			merge_vs = append(merge_vs, kvs[i].Value)
+			i++
+		} else if c > 0 {
+			merge_ks = append(merge_ks, s.keys[j])
+			merge_vs = append(merge_vs, s.values[j])
+			j++
+		} else {
+			merge_ks = append(merge_ks, kvs[i].Key)
+			merge_vs = append(merge_vs, kvs[i].Value)
+			i++
+			j++
+		}
+	}
+
+	assert(len(merge_ks) == l, fmt.Sprintf("len(merge_ks) = %d, l = %d", len(merge_ks), l))
+	assert(isSortedKeys(merge_ks), "merge keys are not sorted")
+
+	s.keys = merge_ks
+	s.values = merge_vs
+
+	return nil
+}
+
+func (s *Store) StoresDelete(opts *pb.StoresDeleteOptions) error {
+	if len(opts.Keys) == 0 {
+		return fmt.Errorf("no keys to delete")
+	}
+
+	if len(opts.Keys) == 0 {
+		return fmt.Errorf("no keys to add")
+	}
+
+	if s.keyLen == -1 {
+		s.keyLen = len(opts.Keys[0].Floats)
+	} else {
+		if len(opts.Keys[0].Floats) != s.keyLen {
+			return fmt.Errorf("Trying to delete key with length %d when existing length is %d", len(opts.Keys[0].Floats), s.keyLen)
+		}
+	}
+
+	ks := sortIntoKeySlicese(opts.Keys)
+
+	l := len(s.keys) - len(ks)
+	merge_ks := make([][]float32, 0, l)
+	merge_vs := make([][]byte, 0, l)
+
+	tail_ks := s.keys
+	tail_vs := s.values
+	for _, k := range ks {
+		j, found := findInSortedSlice(tail_ks, k)
+
+		if found {
+			merge_ks = append(merge_ks, tail_ks[:j]...)
+			merge_vs = append(merge_vs, tail_vs[:j]...)
+			tail_ks = tail_ks[j+1:]
+			tail_vs = tail_vs[j+1:]
+		} else {
+			assert(!hasKey(s.keys, k), fmt.Sprintf("Key exists, but was not found: t=%d, %v", len(tail_ks), k))
+		}
+
+		log.Debug().Msgf("Delete: found = %v, t = %d, j = %d, len(merge_ks) = %d, len(merge_vs) = %d", found, len(tail_ks), j, len(merge_ks), len(merge_vs))
+	}
+
+	merge_ks = append(merge_ks, tail_ks...)
+	merge_vs = append(merge_vs, tail_vs...)
+
+	assert(len(merge_ks) <= len(s.keys), fmt.Sprintf("len(merge_ks) = %d, len(s.keys) = %d", len(merge_ks), len(s.keys)))
+
+	s.keys = merge_ks
+	s.values = merge_vs
+
+	assert(len(s.keys) >= l, fmt.Sprintf("len(s.keys) = %d, l = %d", len(s.keys), l))
+	assert(isSortedKeys(s.keys), "keys are not sorted")
+	assert(func() bool {
+		for _, k := range ks {
+			if _, found := findInSortedSlice(s.keys, k); found {
+				return false
+			}
+		}
+		return true
+	}(), "Keys to delete still present")
+
+	if len(s.keys) != l {
+		log.Debug().Msgf("Delete: Some keys not found: len(s.keys) = %d, l = %d", len(s.keys), l)
+	}
+
+	return nil
+}
+
+func (s *Store) StoresGet(opts *pb.StoresGetOptions) (pb.StoresGetResult, error) {
+	pbKeys := make([]*pb.StoresKey, 0, len(opts.Keys))
+	pbValues := make([]*pb.StoresValue, 0, len(opts.Keys))
+	ks := sortIntoKeySlicese(opts.Keys)
+
+	if len(s.keys) == 0 {
+		log.Debug().Msgf("Get: No keys in store")
+	}
+
+	if s.keyLen == -1 {
+		s.keyLen = len(opts.Keys[0].Floats)
+	} else {
+		if len(opts.Keys[0].Floats) != s.keyLen {
+			return pb.StoresGetResult{}, fmt.Errorf("Try to get a key with length %d when existing length is %d", len(opts.Keys[0].Floats), s.keyLen)
+		}
+	}
+
+	tail_k := s.keys
+	tail_v := s.values
+	for i, k := range ks {
+		j, found := findInSortedSlice(tail_k, k)
+
+		if found {
+			pbKeys = append(pbKeys, &pb.StoresKey{
+				Floats: k,
+			})
+			pbValues = append(pbValues, &pb.StoresValue{
+				Bytes: tail_v[j],
+			})
+
+			tail_k = tail_k[j+1:]
+			tail_v = tail_v[j+1:]
+		} else {
+			assert(!hasKey(s.keys, k), fmt.Sprintf("Key exists, but was not found: i=%d, %v", i, k))
+		}
+	}
+
+	if len(pbKeys) != len(opts.Keys) {
+		log.Debug().Msgf("Get: Some keys not found: len(pbKeys) = %d, len(opts.Keys) = %d, len(s.Keys) = %d", len(pbKeys), len(opts.Keys), len(s.keys))
+	}
+
+	return pb.StoresGetResult{
+		Keys:   pbKeys,
+		Values: pbValues,
+	}, nil
+}
+
+func isNormalized(k []float32) bool {
+	var sum float32
+	for _, v := range k {
+		sum += v
+	}
+
+	return sum == 1.0
+}
+
+// TODO: This we could replace with handwritten SIMD code
+func normalizedCosineSimilarity(k1, k2 []float32) float32 {
+	assert(len(k1) == len(k2), fmt.Sprintf("normalizedCosineSimilarity: len(k1) = %d, len(k2) = %d", len(k1), len(k2)))
+
+	var dot float32
+	for i := 0; i < len(k1); i++ {
+		dot += k1[i] * k2[i]
+	}
+
+	assert(dot >= -1 && dot <= 1, fmt.Sprintf("dot = %f", dot))
+
+	// 2.0 * (1.0 - dot) would be the Euclidean distance
+	return dot
+}
+
+type PriorityItem struct {
+	Similarity float32
+	Key        []float32
+	Value      []byte
+}
+
+type PriorityQueue []*PriorityItem
+
+func (pq PriorityQueue) Len() int { return len(pq) }
+
+func (pq PriorityQueue) Less(i, j int) bool {
+	// Inverted because the most similar should be at the top
+	return pq[i].Similarity < pq[j].Similarity
+}
+
+func (pq PriorityQueue) Swap(i, j int) {
+	pq[i], pq[j] = pq[j], pq[i]
+}
+
+func (pq *PriorityQueue) Push(x any) {
+	item := x.(*PriorityItem)
+	*pq = append(*pq, item)
+}
+
+func (pq *PriorityQueue) Pop() any {
+	old := *pq
+	n := len(old)
+	item := old[n-1]
+	*pq = old[0 : n-1]
+	return item
+}
+
+func (s *Store) StoresFindNormalized(opts *pb.StoresFindOptions) (pb.StoresFindResult, error) {
+	tk := opts.Key.Floats
+	top_ks := make(PriorityQueue, 0, int(opts.TopK))
+	heap.Init(&top_ks)
+
+	for i, k := range s.keys {
+		sim := normalizedCosineSimilarity(tk, k)
+		heap.Push(&top_ks, &PriorityItem{
+			Similarity: sim,
+			Key:        k,
+			Value:      s.values[i],
+		})
+
+		if top_ks.Len() > int(opts.TopK) {
+			heap.Pop(&top_ks)
+		}
+	}
+
+	similarities := make([]float32, top_ks.Len())
+	pbKeys := make([]*pb.StoresKey, top_ks.Len())
+	pbValues := make([]*pb.StoresValue, top_ks.Len())
+
+	for i := top_ks.Len() - 1; i >= 0; i-- {
+		item := heap.Pop(&top_ks).(*PriorityItem)
+
+		similarities[i] = item.Similarity
+		pbKeys[i] = &pb.StoresKey{
+			Floats: item.Key,
+		}
+		pbValues[i] = &pb.StoresValue{
+			Bytes: item.Value,
+		}
+	}
+
+	return pb.StoresFindResult{
+		Keys:         pbKeys,
+		Values:       pbValues,
+		Similarities: similarities,
+	}, nil
+}
+
+func cosineSimilarity(k1, k2 []float32, mag1 float64) float32 {
+	assert(len(k1) == len(k2), fmt.Sprintf("cosineSimilarity: len(k1) = %d, len(k2) = %d", len(k1), len(k2)))
+
+	var dot, mag2 float64
+	for i := 0; i < len(k1); i++ {
+		dot += float64(k1[i] * k2[i])
+		mag2 += float64(k2[i] * k2[i])
+	}
+
+	sim := float32(dot / (mag1 * math.Sqrt(mag2)))
+
+	assert(sim >= -1 && sim <= 1, fmt.Sprintf("sim = %f", sim))
+
+	return sim
+}
+
+func (s *Store) StoresFindFallback(opts *pb.StoresFindOptions) (pb.StoresFindResult, error) {
+	tk := opts.Key.Floats
+	top_ks := make(PriorityQueue, 0, int(opts.TopK))
+	heap.Init(&top_ks)
+
+	var mag1 float64
+	for _, v := range tk {
+		mag1 += float64(v * v)
+	}
+	mag1 = math.Sqrt(mag1)
+
+	for i, k := range s.keys {
+		dist := cosineSimilarity(tk, k, mag1)
+		heap.Push(&top_ks, &PriorityItem{
+			Similarity: dist,
+			Key:        k,
+			Value:      s.values[i],
+		})
+
+		if top_ks.Len() > int(opts.TopK) {
+			heap.Pop(&top_ks)
+		}
+	}
+
+	similarities := make([]float32, top_ks.Len())
+	pbKeys := make([]*pb.StoresKey, top_ks.Len())
+	pbValues := make([]*pb.StoresValue, top_ks.Len())
+
+	for i := top_ks.Len() - 1; i >= 0; i-- {
+		item := heap.Pop(&top_ks).(*PriorityItem)
+
+		similarities[i] = item.Similarity
+		pbKeys[i] = &pb.StoresKey{
+			Floats: item.Key,
+		}
+		pbValues[i] = &pb.StoresValue{
+			Bytes: item.Value,
+		}
+	}
+
+	return pb.StoresFindResult{
+		Keys:         pbKeys,
+		Values:       pbValues,
+		Similarities: similarities,
+	}, nil
+}
+
+func (s *Store) StoresFind(opts *pb.StoresFindOptions) (pb.StoresFindResult, error) {
+	tk := opts.Key.Floats
+
+	if len(tk) != s.keyLen {
+		return pb.StoresFindResult{}, fmt.Errorf("Try to find key with length %d when existing length is %d", len(tk), s.keyLen)
+	}
+
+	if opts.TopK < 1 {
+		return pb.StoresFindResult{}, fmt.Errorf("opts.TopK = %d, must be >= 1", opts.TopK)
+	}
+
+	if s.keyLen == -1 {
+		s.keyLen = len(opts.Key.Floats)
+	} else {
+		if len(opts.Key.Floats) != s.keyLen {
+			return pb.StoresFindResult{}, fmt.Errorf("Try to add key with length %d when existing length is %d", len(opts.Key.Floats), s.keyLen)
+		}
+	}
+
+	if s.keysAreNormalized && isNormalized(tk) {
+		return s.StoresFindNormalized(opts)
+	} else {
+		if s.keysAreNormalized {
+			var sample []float32
+			if len(s.keys) > 5 {
+				sample = tk[:5]
+			} else {
+				sample = tk
+			}
+			log.Debug().Msgf("Trying to compare non-normalized key with normalized keys: %v", sample)
+		}
+
+		return s.StoresFindFallback(opts)
+	}
+}

core/backend/stores.go

@@ -0,0 +1,23 @@
+package backend
+
+import (
+	"github.com/go-skynet/LocalAI/core/config"
+
+	"github.com/go-skynet/LocalAI/pkg/grpc"
+	"github.com/go-skynet/LocalAI/pkg/model"
+)
+
+func StoreBackend(sl *model.ModelLoader, appConfig *config.ApplicationConfig, storeName string) (grpc.Backend, error) {
+    if storeName == "" {
+      storeName = "default"
+    }
+
+    sc := []model.Option{
+      model.WithBackendString(model.LocalStoreBackend),
+      model.WithAssetDir(appConfig.AssetsDestination),
+      model.WithModel(storeName),
+    }
+
+    return sl.BackendLoader(sc...)
+}
+

core/http/api.go

@@ -172,6 +172,13 @@ func App(cl *config.BackendConfigLoader, ml *model.ModelLoader, appConfig *confi
 	// Elevenlabs
 	app.Post("/v1/text-to-speech/:voice-id", auth, elevenlabs.TTSEndpoint(cl, ml, appConfig))
 
+	// Stores
+	sl := model.NewModelLoader("")
+	app.Post("/stores/set", auth, localai.StoresSetEndpoint(sl, appConfig))
+	app.Post("/stores/delete", auth, localai.StoresDeleteEndpoint(sl, appConfig))
+	app.Post("/stores/get", auth, localai.StoresGetEndpoint(sl, appConfig))
+	app.Post("/stores/find", auth, localai.StoresFindEndpoint(sl, appConfig))
+
 	// openAI compatible API endpoint
 
 	// chat

core/http/api_test.go

@@ -15,6 +15,7 @@ import (
 
 	"github.com/go-skynet/LocalAI/core/config"
 	. "github.com/go-skynet/LocalAI/core/http"
+	"github.com/go-skynet/LocalAI/core/schema"
 	"github.com/go-skynet/LocalAI/core/startup"
 
 	"github.com/go-skynet/LocalAI/pkg/downloader"
@@ -122,6 +123,75 @@ func postModelApplyRequest(url string, request modelApplyRequest) (response map[
 	return
 }
 
+func postRequestJSON[B any](url string, bodyJson *B) error {
+	payload, err := json.Marshal(bodyJson)
+	if err != nil {
+		return err
+	}
+
+	GinkgoWriter.Printf("POST %s: %s\n", url, string(payload))
+
+	req, err := http.NewRequest("POST", url, bytes.NewBuffer(payload))
+	if err != nil {
+		return err
+	}
+
+	req.Header.Set("Content-Type", "application/json")
+
+	client := &http.Client{}
+	resp, err := client.Do(req)
+	if err != nil {
+		return err
+	}
+
+	defer resp.Body.Close()
+
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return err
+	}
+
+	if resp.StatusCode < 200 || resp.StatusCode >= 400 {
+		return fmt.Errorf("unexpected status code: %d, body: %s", resp.StatusCode, string(body))
+	}
+
+	return nil
+}
+
+func postRequestResponseJSON[B1 any, B2 any](url string, reqJson *B1, respJson *B2) error {
+	payload, err := json.Marshal(reqJson)
+	if err != nil {
+		return err
+	}
+
+	GinkgoWriter.Printf("POST %s: %s\n", url, string(payload))
+
+	req, err := http.NewRequest("POST", url, bytes.NewBuffer(payload))
+	if err != nil {
+		return err
+	}
+
+	req.Header.Set("Content-Type", "application/json")
+
+	client := &http.Client{}
+	resp, err := client.Do(req)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return err
+	}
+
+	if resp.StatusCode < 200 || resp.StatusCode >= 400 {
+		return fmt.Errorf("unexpected status code: %d, body: %s", resp.StatusCode, string(body))
+	}
+
+	return json.Unmarshal(body, respJson)
+}
+
 //go:embed backend-assets/*
 var backendAssets embed.FS
 
@@ -836,6 +906,78 @@ var _ = Describe("API test", func() {
 				Expect(tokens).ToNot(Or(Equal(1), Equal(0)))
 			})
 		})
+
+		// See tests/integration/stores_test
+		Context("Stores", Label("stores"), func() {
+
+			It("sets, gets, finds and deletes entries", func() {
+				ks := [][]float32{
+					{0.1, 0.2, 0.3},
+					{0.4, 0.5, 0.6},
+					{0.7, 0.8, 0.9},
+				}
+				vs := []string{
+					"test1",
+					"test2",
+					"test3",
+				}
+				setBody := schema.StoresSet{
+					Keys:   ks,
+					Values: vs,
+				}
+
+				url := "http://127.0.0.1:9090/stores/"
+				err := postRequestJSON(url+"set", &setBody)
+				Expect(err).ToNot(HaveOccurred())
+
+				getBody := schema.StoresGet{
+					Keys: ks,
+				}
+				var getRespBody schema.StoresGetResponse
+				err = postRequestResponseJSON(url+"get", &getBody, &getRespBody)
+				Expect(err).ToNot(HaveOccurred())
+				Expect(len(getRespBody.Keys)).To(Equal(len(ks)))
+
+				for i, v := range getRespBody.Keys {
+					if v[0] == 0.1 {
+						Expect(getRespBody.Values[i]).To(Equal("test1"))
+					} else if v[0] == 0.4 {
+						Expect(getRespBody.Values[i]).To(Equal("test2"))
+					} else {
+						Expect(getRespBody.Values[i]).To(Equal("test3"))
+					}
+				}
+
+				deleteBody := schema.StoresDelete{
+					Keys: [][]float32{
+						{0.1, 0.2, 0.3},
+					},
+				}
+				err = postRequestJSON(url+"delete", &deleteBody)
+				Expect(err).ToNot(HaveOccurred())
+
+				findBody := schema.StoresFind{
+					Key:  []float32{0.1, 0.3, 0.7},
+					Topk: 10,
+				}
+
+				var findRespBody schema.StoresFindResponse
+				err = postRequestResponseJSON(url+"find", &findBody, &findRespBody)
+				Expect(err).ToNot(HaveOccurred())
+				Expect(len(findRespBody.Keys)).To(Equal(2))
+
+				for i, v := range findRespBody.Keys {
+					if v[0] == 0.4 {
+						Expect(findRespBody.Values[i]).To(Equal("test2"))
+					} else {
+						Expect(findRespBody.Values[i]).To(Equal("test3"))
+					}
+
+					Expect(findRespBody.Similarities[i]).To(BeNumerically(">=", -1))
+					Expect(findRespBody.Similarities[i]).To(BeNumerically("<=", 1))
+				}
+			})
+		})
 	})
 
 	Context("Config file", func() {

core/http/endpoints/localai/stores.go

@@ -0,0 +1,121 @@
+package localai
+
+import (
+	"github.com/go-skynet/LocalAI/core/backend"
+	"github.com/go-skynet/LocalAI/core/config"
+	"github.com/go-skynet/LocalAI/core/schema"
+	"github.com/go-skynet/LocalAI/pkg/model"
+	"github.com/go-skynet/LocalAI/pkg/store"
+	"github.com/gofiber/fiber/v2"
+)
+
+func StoresSetEndpoint(sl *model.ModelLoader, appConfig *config.ApplicationConfig) func(c *fiber.Ctx) error {
+	return func(c *fiber.Ctx) error {
+		input := new(schema.StoresSet)
+
+		if err := c.BodyParser(input); err != nil {
+			return err
+		}
+
+		sb, err := backend.StoreBackend(sl, appConfig, input.Store)
+		if err != nil {
+			return err
+		}
+
+		vals := make([][]byte, len(input.Values))
+		for i, v := range input.Values {
+			vals[i] = []byte(v)
+		}
+
+		err = store.SetCols(c.Context(), sb, input.Keys, vals)
+		if err != nil {
+			return err
+		}
+
+		return c.Send(nil)
+	}
+}
+
+func StoresDeleteEndpoint(sl *model.ModelLoader, appConfig *config.ApplicationConfig) func(c *fiber.Ctx) error {
+	return func(c *fiber.Ctx) error {
+		input := new(schema.StoresDelete)
+
+		if err := c.BodyParser(input); err != nil {
+			return err
+		}
+
+		sb, err := backend.StoreBackend(sl, appConfig, input.Store)
+		if err != nil {
+			return err
+		}
+
+		if err := store.DeleteCols(c.Context(), sb, input.Keys); err != nil {
+			return err
+		}
+
+		return c.Send(nil)
+	}
+}
+
+func StoresGetEndpoint(sl *model.ModelLoader, appConfig *config.ApplicationConfig) func(c *fiber.Ctx) error {
+	return func(c *fiber.Ctx) error {
+		input := new(schema.StoresGet)
+
+		if err := c.BodyParser(input); err != nil {
+			return err
+		}
+
+		sb, err := backend.StoreBackend(sl, appConfig, input.Store)
+		if err != nil {
+			return err
+		}
+
+		keys, vals, err := store.GetCols(c.Context(), sb, input.Keys)
+		if err != nil {
+			return err
+		}
+
+		res := schema.StoresGetResponse{
+			Keys:   keys,
+			Values: make([]string, len(vals)),
+		}
+
+		for i, v := range vals {
+			res.Values[i] = string(v)
+		}
+
+		return c.JSON(res)
+	}
+}
+
+func StoresFindEndpoint(sl *model.ModelLoader, appConfig *config.ApplicationConfig) func(c *fiber.Ctx) error {
+	return func(c *fiber.Ctx) error {
+		input := new(schema.StoresFind)
+
+		if err := c.BodyParser(input); err != nil {
+			return err
+		}
+
+		sb, err := backend.StoreBackend(sl, appConfig, input.Store)
+		if err != nil {
+			return err
+		}
+
+		keys, vals, similarities, err := store.Find(c.Context(), sb, input.Key, input.Topk)
+		if err != nil {
+			return err
+		}
+
+		res := schema.StoresFindResponse{
+			Keys:         keys,
+			Values:       make([]string, len(vals)),
+			Similarities: similarities,
+		}
+
+		for i, v := range vals {
+			res.Values[i] = string(v)
+		}
+
+		return c.JSON(res)
+	}
+}

core/schema/localai.go

@@ -20,3 +20,40 @@ type TTSRequest struct {
 	Voice   string `json:"voice" yaml:"voice"`
 	Backend string `json:"backend" yaml:"backend"`
 }
+
+type StoresSet struct {
+	Store string `json:"store,omitempty" yaml:"store,omitempty"`
+
+	Keys   [][]float32 `json:"keys" yaml:"keys"`
+	Values []string    `json:"values" yaml:"values"`
+}
+
+type StoresDelete struct {
+	Store string `json:"store,omitempty" yaml:"store,omitempty"`
+
+	Keys [][]float32 `json:"keys"`
+}
+
+type StoresGet struct {
+	Store string `json:"store,omitempty" yaml:"store,omitempty"`
+
+	Keys [][]float32 `json:"keys" yaml:"keys"`
+}
+
+type StoresGetResponse struct {
+	Keys   [][]float32 `json:"keys" yaml:"keys"`
+	Values []string    `json:"values" yaml:"values"`
+}
+
+type StoresFind struct {
+	Store string `json:"store,omitempty" yaml:"store,omitempty"`
+
+	Key  []float32 `json:"key" yaml:"key"`
+	Topk int       `json:"topk" yaml:"topk"`
+}
+
+type StoresFindResponse struct {
+	Keys         [][]float32 `json:"keys" yaml:"keys"`
+	Values       []string    `json:"values" yaml:"values"`
+	Similarities []float32   `json:"similarities" yaml:"similarities"`
+}

docs/content/docs/features/stores.md

@@ -0,0 +1,97 @@
+
++++
+disableToc = false
+title = "💾 Stores"
+
+weight = 18
+url = '/stores'
++++
+
+Stores are an experimental feature to help with querying data using similarity search. It is
+a low level API that consists of only `get`, `set`, `delete` and `find`.
+
+For example if you have an embedding of some text and want to find text with similar embeddings.
+You can create embeddings for chunks of all your text then compare them against the embedding of the text you
+are searching on.
+
+An embedding here meaning a vector of numbers that represent some information about the text. The
+embeddings are created from an A.I. model such as BERT or a more traditional method such as word
+frequency.
+
+Previously you would have to integrate with an external vector database or library directly.
+With the stores feature you can now do it through the LocalAI API. 
+
+Note however that doing a similarity search on embeddings is just one way to do retrieval. A higher level
+API can take this into account, so this may not be the best place to start.
+
+## API overview
+
+There is an internal gRPC API and an external facing HTTP JSON API. We'll just discuss the external HTTP API,
+however the HTTP API mirrors the gRPC API. Consult `pkg/store/client` for internal usage.
+
+Everything is in columnar format meaning that instead of getting an array of objects with a key and a value each. 
+You instead get two separate arrays of keys and values.
+
+Keys are arrays of floating point numbers with a maximum width of 32bits. Values are strings (in gRPC they are bytes).
+
+The key vectors must all be the same length and it's best for search performance if they are normalized. When
+addings keys it will be detected if they are not normalized and what length they are.
+
+All endpoints accept a `store` field which specifies which store to operate on. Presently they are created
+on the fly and there is only one store backend so no configuration is required.
+
+## Set
+
+To set some keys you can do
+
+```
+curl -X POST http://localhost:8080/stores/set \
+     -H "Content-Type: application/json" \
+     -d '{"keys": [[0.1, 0.2], [0.3, 0.4]], "values": ["foo", "bar"]}'
+```
+
+Setting the same keys again will update their values.
+
+On success 200 OK is returned with no body.
+
+## Get
+
+To get some keys you can do
+
+```
+curl -X POST http://localhost:8080/stores/get \
+     -H "Content-Type: application/json" \
+     -d '{"keys": [[0.1, 0.2]]}'
+```
+
+Both the keys and values are returned, e.g: `{"keys":[[0.1,0.2]],"values":["foo"]}`
+
+The order of the keys is not preserved! If a key does not exist then nothing is returned.
+
+## Delete
+
+To delete keys and values you can do
+
+```
+curl -X POST http://localhost:8080/stores/delete \
+     -H "Content-Type: application/json" \
+     -d '{"keys": [[0.1, 0.2]]}'
+```
+
+If a key doesn't exist then it is ignored.
+
+On success 200 OK is returned with no body.
+
+## Find
+
+To do a similarity search you can do
+
+```
+curl -X POST http://localhost:8080/stores/find 
+     -H "Content-Type: application/json" \
+     -d '{"topk": 2, "key": [0.2, 0.1]}'
+```
+
+`topk` limits the number of results returned. The result value is the same as `get`,
+except that it also includes an array of `similarities`. Where `1.0` is the maximum similarity.
+They are returned in the order of most similar to least.

docs/content/docs/overview.md

@@ -73,6 +73,7 @@ Note that this started just as a fun weekend project by [mudler](https://github.
 - ✍️ [Constrained grammars](https://localai.io/features/constrained_grammars/)
 - 🖼️ [Download Models directly from Huggingface ](https://localai.io/models/)
 - 🆕 [Vision API](https://localai.io/features/gpt-vision/)
+- 💾 [Stores](https://localai.io/features/stores)
 
 ## Contribute and help
 

examples/semantic-todo/README.md

@@ -0,0 +1,15 @@
+This demonstrates the vector store backend in its simplest form. 
+You can add tasks and then search/sort them using the TUI. 
+
+To build and run do
+
+```bash
+$ go get .
+$ go run .
+```
+
+A seperate LocaAI instance is required of course. For e.g.
+
+```bash
+$ docker run -e DEBUG=true --rm -it -p 8080:8080 <LocalAI-image> bert-cpp
+```

examples/semantic-todo/go.mod

@@ -0,0 +1,18 @@
+module semantic-todo
+
+go 1.21.6
+
+require (
+	github.com/gdamore/tcell/v2 v2.7.1
+	github.com/rivo/tview v0.0.0-20240307173318-e804876934a1
+)
+
+require (
+	github.com/gdamore/encoding v1.0.0 // indirect
+	github.com/lucasb-eyer/go-colorful v1.2.0 // indirect
+	github.com/mattn/go-runewidth v0.0.15 // indirect
+	github.com/rivo/uniseg v0.4.7 // indirect
+	golang.org/x/sys v0.17.0 // indirect
+	golang.org/x/term v0.17.0 // indirect
+	golang.org/x/text v0.14.0 // indirect
+)

examples/semantic-todo/go.sum

@@ -0,0 +1,50 @@
+github.com/gdamore/encoding v1.0.0 h1:+7OoQ1Bc6eTm5niUzBa0Ctsh6JbMW6Ra+YNuAtDBdko=
+github.com/gdamore/encoding v1.0.0/go.mod h1:alR0ol34c49FCSBLjhosxzcPHQbf2trDkoo5dl+VrEg=
+github.com/gdamore/tcell/v2 v2.7.1 h1:TiCcmpWHiAU7F0rA2I3S2Y4mmLmO9KHxJ7E1QhYzQbc=
+github.com/gdamore/tcell/v2 v2.7.1/go.mod h1:dSXtXTSK0VsW1biw65DZLZ2NKr7j0qP/0J7ONmsraWg=
+github.com/lucasb-eyer/go-colorful v1.2.0 h1:1nnpGOrhyZZuNyfu1QjKiUICQ74+3FNCN69Aj6K7nkY=
+github.com/lucasb-eyer/go-colorful v1.2.0/go.mod h1:R4dSotOR9KMtayYi1e77YzuveK+i7ruzyGqttikkLy0=
+github.com/mattn/go-runewidth v0.0.15 h1:UNAjwbU9l54TA3KzvqLGxwWjHmMgBUVhBiTjelZgg3U=
+github.com/mattn/go-runewidth v0.0.15/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
+github.com/rivo/tview v0.0.0-20240307173318-e804876934a1 h1:bWLHTRekAy497pE7+nXSuzXwwFHI0XauRzz6roUvY+s=
+github.com/rivo/tview v0.0.0-20240307173318-e804876934a1/go.mod h1:02iFIz7K/A9jGCvrizLPvoqr4cEIx7q54RH5Qudkrss=
+github.com/rivo/uniseg v0.2.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=
+github.com/rivo/uniseg v0.4.3/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
+github.com/rivo/uniseg v0.4.7 h1:WUdvkW8uEhrYfLC4ZzdpI2ztxP1I582+49Oc5Mq64VQ=
+github.com/rivo/uniseg v0.4.7/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
+github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
+golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
+golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
+golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
+golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
+golang.org/x/net v0.6.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
+golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.17.0 h1:25cE3gD+tdBA7lp7QfhuV+rJiE9YXTcS3VG1SqssI/Y=
+golang.org/x/sys v0.17.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
+golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
+golang.org/x/term v0.5.0/go.mod h1:jMB1sMXY+tzblOD4FWmEbocvup2/aLOaQEp7JmGp78k=
+golang.org/x/term v0.17.0 h1:mkTF7LCd6WGJNL3K1Ad7kwxNfYAW6a8a8QqtMblp/4U=
+golang.org/x/term v0.17.0/go.mod h1:lLRBjIVuehSbZlaOtGMbcMncT+aqLLLmKrsjNrUguwk=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
+golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
+golang.org/x/text v0.14.0 h1:ScX5w1eTa3QqT8oi6+ziP7dTV1S2+ALU0bI+0zXKWiQ=
+golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
+golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
+golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=

examples/semantic-todo/main.go

@@ -0,0 +1,352 @@
+package main
+
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+
+	"github.com/gdamore/tcell/v2"
+	"github.com/rivo/tview"
+)
+
+const (
+	localAI     string = "http://localhost:8080"
+	rootStatus  string = "[::b]<space>[::-]: Add Task  [::b]/[::-]: Search Task  [::b]<C-c>[::-]: Exit"
+	inputStatus string = "Press [::b]<enter>[::-] to submit the task, [::b]<esc>[::-] to cancel"
+)
+
+type Task struct {
+	Description string
+	Similarity  float32
+}
+
+type AppState int
+
+const (
+	StateRoot AppState = iota
+	StateInput
+	StateSearch
+)
+
+type App struct {
+	state AppState
+	tasks []Task
+	app   *tview.Application
+	flex  *tview.Flex
+	table *tview.Table
+}
+
+func NewApp() *App {
+	return &App{
+		state: StateRoot,
+		tasks: []Task{
+			{Description: "Take the dog for a walk (after I get a dog)"},
+			{Description: "Go to the toilet"},
+			{Description: "Allow TODOs to be marked completed or removed"},
+		},
+	}
+}
+
+func getEmbeddings(description string) ([]float32, error) {
+	// Define the request payload
+	payload := map[string]interface{}{
+		"model": "bert-cpp-minilm-v6",
+		"input": description,
+	}
+
+	// Marshal the payload into JSON
+	jsonPayload, err := json.Marshal(payload)
+	if err != nil {
+		return nil, err
+	}
+
+	// Make the HTTP request to the local OpenAI embeddings API
+	resp, err := http.Post(localAI+"/embeddings", "application/json", bytes.NewBuffer(jsonPayload))
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+
+	// Check if the request was successful
+	if resp.StatusCode != http.StatusOK {
+		return nil, fmt.Errorf("request to embeddings API failed with status code: %d", resp.StatusCode)
+	}
+
+	// Parse the response body
+	var result struct {
+		Data []struct {
+			Embedding []float32 `json:"embedding"`
+		} `json:"data"`
+	}
+	if err := json.NewDecoder(resp.Body).Decode(&result); err != nil {
+		return nil, err
+	}
+
+	// Return the embedding
+	if len(result.Data) > 0 {
+		return result.Data[0].Embedding, nil
+	}
+	return nil, errors.New("no embedding received from API")
+}
+
+type StoresSet struct {
+	Store string `json:"store,omitempty" yaml:"store,omitempty"`
+
+	Keys   [][]float32 `json:"keys" yaml:"keys"`
+	Values []string    `json:"values" yaml:"values"`
+}
+
+func postTasksToExternalService(tasks []Task) error {
+	keys := make([][]float32, 0, len(tasks))
+	// Get the embeddings for the task description
+	for _, task := range tasks {
+		embedding, err := getEmbeddings(task.Description)
+		if err != nil {
+			return err
+		}
+		keys = append(keys, embedding)
+	}
+
+	values := make([]string, 0, len(tasks))
+	for _, task := range tasks {
+		values = append(values, task.Description)
+	}
+
+	// Construct the StoresSet object
+	storesSet := StoresSet{
+		Store:  "tasks_store", // Assuming you have a specific store name
+		Keys:   keys,
+		Values: values,
+	}
+
+	// Marshal the StoresSet object into JSON
+	jsonData, err := json.Marshal(storesSet)
+	if err != nil {
+		return err
+	}
+
+	// Make the HTTP POST request to the external service
+	resp, err := http.Post(localAI+"/stores/set", "application/json", bytes.NewBuffer(jsonData))
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+
+	// Check if the request was successful
+	if resp.StatusCode != http.StatusOK {
+		// read resp body into string
+		body, err := io.ReadAll(resp.Body)
+		if err != nil {
+			return err
+		}
+		return fmt.Errorf("store request failed with status code: %d: %s", resp.StatusCode, body)
+	}
+
+	return nil
+}
+
+type StoresFind struct {
+	Store string `json:"store,omitempty" yaml:"store,omitempty"`
+
+	Key  []float32 `json:"key" yaml:"key"`
+	Topk int       `json:"topk" yaml:"topk"`
+}
+
+type StoresFindResponse struct {
+	Keys         [][]float32 `json:"keys" yaml:"keys"`
+	Values       []string    `json:"values" yaml:"values"`
+	Similarities []float32   `json:"similarities" yaml:"similarities"`
+}
+
+func findSimilarTexts(inputText string, topk int) (StoresFindResponse, error) {
+	// Initialize an empty response object
+	response := StoresFindResponse{}
+
+	// Get the embedding for the input text
+	embedding, err := getEmbeddings(inputText)
+	if err != nil {
+		return response, err
+	}
+
+	// Construct the StoresFind object
+	storesFind := StoresFind{
+		Store: "tasks_store", // Assuming you have a specific store name
+		Key:   embedding,
+		Topk:  topk,
+	}
+
+	// Marshal the StoresFind object into JSON
+	jsonData, err := json.Marshal(storesFind)
+	if err != nil {
+		return response, err
+	}
+
+	// Make the HTTP POST request to the external service's /stores/find endpoint
+	resp, err := http.Post(localAI+"/stores/find", "application/json", bytes.NewBuffer(jsonData))
+	if err != nil {
+		return response, err
+	}
+	defer resp.Body.Close()
+
+	// Check if the request was successful
+	if resp.StatusCode != http.StatusOK {
+		return response, fmt.Errorf("request to /stores/find failed with status code: %d", resp.StatusCode)
+	}
+
+	// Parse the response body to retrieve similar texts and similarities
+	if err := json.NewDecoder(resp.Body).Decode(&response); err != nil {
+		return response, err
+	}
+
+	return response, nil
+}
+
+func (app *App) updateUI() {
+	// Clear the flex layout
+	app.flex.Clear()
+	app.flex.SetDirection(tview.FlexColumn)
+	app.flex.AddItem(nil, 0, 1, false)
+
+	midCol := tview.NewFlex()
+	midCol.SetDirection(tview.FlexRow)
+	midCol.AddItem(nil, 0, 1, false)
+
+	// Create a new table.
+	app.table.Clear()
+	app.table.SetBorders(true)
+
+	// Set table headers
+	app.table.SetCell(0, 0, tview.NewTableCell("Description").SetAlign(tview.AlignLeft).SetExpansion(1).SetAttributes(tcell.AttrBold))
+	app.table.SetCell(0, 1, tview.NewTableCell("Similarity").SetAlign(tview.AlignCenter).SetExpansion(0).SetAttributes(tcell.AttrBold))
+
+	// Add the tasks to the table.
+	for i, task := range app.tasks {
+		row := i + 1
+		app.table.SetCell(row, 0, tview.NewTableCell(task.Description))
+		app.table.SetCell(row, 1, tview.NewTableCell(fmt.Sprintf("%.2f", task.Similarity)))
+	}
+
+	if app.state == StateInput {
+		inputField := tview.NewInputField()
+		inputField.
+			SetLabel("New Task: ").
+			SetFieldWidth(0).
+			SetDoneFunc(func(key tcell.Key) {
+				if key == tcell.KeyEnter {
+					task := Task{Description: inputField.GetText()}
+					app.tasks = append(app.tasks, task)
+					app.state = StateRoot
+					postTasksToExternalService([]Task{task})
+				}
+				app.updateUI()
+			})
+		midCol.AddItem(inputField, 3, 2, true)
+		app.app.SetFocus(inputField)
+	} else if app.state == StateSearch {
+		searchField := tview.NewInputField()
+		searchField.SetLabel("Search: ").
+			SetFieldWidth(0).
+			SetDoneFunc(func(key tcell.Key) {
+				if key == tcell.KeyEnter {
+					similar, err := findSimilarTexts(searchField.GetText(), 100)
+					if err != nil {
+						panic(err)
+					}
+					app.tasks = make([]Task, len(similar.Keys))
+					for i, v := range similar.Values {
+						app.tasks[i] = Task{Description: v, Similarity: similar.Similarities[i]}
+					}
+				}
+				app.updateUI()
+			})
+		midCol.AddItem(searchField, 3, 2, true)
+		app.app.SetFocus(searchField)
+	} else {
+		midCol.AddItem(nil, 3, 1, false)
+	}
+
+	midCol.AddItem(app.table, 0, 2, true)
+
+	// Add the status bar to the flex layout
+	statusBar := tview.NewTextView().
+		SetText(rootStatus).
+		SetDynamicColors(true).
+		SetTextAlign(tview.AlignCenter)
+	if app.state == StateInput {
+		statusBar.SetText(inputStatus)
+	}
+	midCol.AddItem(statusBar, 1, 1, false)
+	midCol.AddItem(nil, 0, 1, false)
+
+	app.flex.AddItem(midCol, 0, 10, true)
+	app.flex.AddItem(nil, 0, 1, false)
+
+	// Set the flex as the root element
+	app.app.SetRoot(app.flex, true)
+}
+
+func main() {
+	app := NewApp()
+	tApp := tview.NewApplication()
+	flex := tview.NewFlex().SetDirection(tview.FlexRow)
+	table := tview.NewTable()
+
+	app.app = tApp
+	app.flex = flex
+	app.table = table
+
+	app.updateUI() // Initial UI setup
+
+	app.app.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
+		switch app.state {
+		case StateRoot:
+			// Handle key events when in the root state
+			switch event.Key() {
+			case tcell.KeyRune:
+				switch event.Rune() {
+				case ' ':
+					app.state = StateInput
+					app.updateUI()
+					return nil // Event is handled
+				case '/':
+					app.state = StateSearch
+					app.updateUI()
+					return nil // Event is handled
+				}
+			}
+
+		case StateInput:
+			// Handle key events when in the input state
+			if event.Key() == tcell.KeyEsc {
+				// Exit input state without adding a task
+				app.state = StateRoot
+				app.updateUI()
+				return nil // Event is handled
+			}
+
+		case StateSearch:
+			// Handle key events when in the search state
+			if event.Key() == tcell.KeyEsc {
+				// Exit search state
+				app.state = StateRoot
+				app.updateUI()
+				return nil // Event is handled
+			}
+		}
+
+		// Return the event for further processing by tview
+		return event
+	})
+
+	if err := postTasksToExternalService(app.tasks); err != nil {
+		panic(err)
+	}
+
+	// Start the application
+	if err := app.app.Run(); err != nil {
+		panic(err)
+	}
+}

pkg/grpc/backend.go

@@ -44,4 +44,9 @@ type Backend interface {
 	AudioTranscription(ctx context.Context, in *pb.TranscriptRequest, opts ...grpc.CallOption) (*schema.Result, error)
 	TokenizeString(ctx context.Context, in *pb.PredictOptions, opts ...grpc.CallOption) (*pb.TokenizationResponse, error)
 	Status(ctx context.Context) (*pb.StatusResponse, error)
+
+	StoresSet(ctx context.Context, in *pb.StoresSetOptions, opts ...grpc.CallOption) (*pb.Result, error)
+	StoresDelete(ctx context.Context, in *pb.StoresDeleteOptions, opts ...grpc.CallOption) (*pb.Result, error)
+	StoresGet(ctx context.Context, in *pb.StoresGetOptions, opts ...grpc.CallOption) (*pb.StoresGetResult, error)
+	StoresFind(ctx context.Context, in *pb.StoresFindOptions, opts ...grpc.CallOption) (*pb.StoresFindResult, error)
 }

pkg/grpc/base/base.go

@@ -72,6 +72,22 @@ func (llm *Base) Status() (pb.StatusResponse, error) {
 	}, nil
 }
 
+func (llm *Base) StoresSet(*pb.StoresSetOptions) error {
+	return fmt.Errorf("unimplemented")
+}
+
+func (llm *Base) StoresGet(*pb.StoresGetOptions) (pb.StoresGetResult, error) {
+	return pb.StoresGetResult{}, fmt.Errorf("unimplemented")
+}
+
+func (llm *Base) StoresDelete(*pb.StoresDeleteOptions) error {
+	return fmt.Errorf("unimplemented")
+}
+
+func (llm *Base) StoresFind(*pb.StoresFindOptions) (pb.StoresFindResult, error) {
+	return pb.StoresFindResult{}, fmt.Errorf("unimplemented")
+}
+
 func memoryUsage() *pb.MemoryUsageData {
 	mud := pb.MemoryUsageData{
 		Breakdown: make(map[string]uint64),

pkg/grpc/client.go

@@ -291,3 +291,67 @@ func (c *Client) Status(ctx context.Context) (*pb.StatusResponse, error) {
 	client := pb.NewBackendClient(conn)
 	return client.Status(ctx, &pb.HealthMessage{})
 }
+
+func (c *Client) StoresSet(ctx context.Context, in *pb.StoresSetOptions, opts ...grpc.CallOption) (*pb.Result, error) {
+	if !c.parallel {
+		c.opMutex.Lock()
+		defer c.opMutex.Unlock()
+	}
+	c.setBusy(true)
+	defer c.setBusy(false)
+	conn, err := grpc.Dial(c.address, grpc.WithTransportCredentials(insecure.NewCredentials()))
+	if err != nil {
+		return nil, err
+	}
+	defer conn.Close()
+	client := pb.NewBackendClient(conn)
+	return client.StoresSet(ctx, in, opts...)
+}
+
+func (c *Client) StoresDelete(ctx context.Context, in *pb.StoresDeleteOptions, opts ...grpc.CallOption) (*pb.Result, error) {
+	if !c.parallel {
+		c.opMutex.Lock()
+		defer c.opMutex.Unlock()
+	}
+	c.setBusy(true)
+	defer c.setBusy(false)
+	conn, err := grpc.Dial(c.address, grpc.WithTransportCredentials(insecure.NewCredentials()))
+	if err != nil {
+		return nil, err
+	}
+	defer conn.Close()
+	client := pb.NewBackendClient(conn)
+	return client.StoresDelete(ctx, in, opts...)
+}
+
+func (c *Client) StoresGet(ctx context.Context, in *pb.StoresGetOptions, opts ...grpc.CallOption) (*pb.StoresGetResult, error) {
+	if !c.parallel {
+		c.opMutex.Lock()
+		defer c.opMutex.Unlock()
+	}
+	c.setBusy(true)
+	defer c.setBusy(false)
+	conn, err := grpc.Dial(c.address, grpc.WithTransportCredentials(insecure.NewCredentials()))
+	if err != nil {
+		return nil, err
+	}
+	defer conn.Close()
+	client := pb.NewBackendClient(conn)
+	return client.StoresGet(ctx, in, opts...)
+}
+
+func (c *Client) StoresFind(ctx context.Context, in *pb.StoresFindOptions, opts ...grpc.CallOption) (*pb.StoresFindResult, error) {
+	if !c.parallel {
+		c.opMutex.Lock()
+		defer c.opMutex.Unlock()
+	}
+	c.setBusy(true)
+	defer c.setBusy(false)
+	conn, err := grpc.Dial(c.address, grpc.WithTransportCredentials(insecure.NewCredentials()))
+	if err != nil {
+		return nil, err
+	}
+	defer conn.Close()
+	client := pb.NewBackendClient(conn)
+	return client.StoresFind(ctx, in, opts...)
+}

pkg/grpc/embed.go

@@ -85,6 +85,22 @@ func (e *embedBackend) Status(ctx context.Context) (*pb.StatusResponse, error) {
 	return e.s.Status(ctx, &pb.HealthMessage{})
 }
 
+func (e *embedBackend) StoresSet(ctx context.Context, in *pb.StoresSetOptions, opts ...grpc.CallOption) (*pb.Result, error) {
+	return e.s.StoresSet(ctx, in)
+}
+
+func (e *embedBackend) StoresDelete(ctx context.Context, in *pb.StoresDeleteOptions, opts ...grpc.CallOption) (*pb.Result, error) {
+	return e.s.StoresDelete(ctx, in)
+}
+
+func (e *embedBackend) StoresGet(ctx context.Context, in *pb.StoresGetOptions, opts ...grpc.CallOption) (*pb.StoresGetResult, error) {
+	return e.s.StoresGet(ctx, in)
+}
+
+func (e *embedBackend) StoresFind(ctx context.Context, in *pb.StoresFindOptions, opts ...grpc.CallOption) (*pb.StoresFindResult, error) {
+	return e.s.StoresFind(ctx, in)
+}
+
 type embedBackendServerStream struct {
 	ctx context.Context
 	fn  func(s []byte)

pkg/grpc/interface.go

@@ -19,6 +19,11 @@ type LLM interface {
 	TTS(*pb.TTSRequest) error
 	TokenizeString(*pb.PredictOptions) (pb.TokenizationResponse, error)
 	Status() (pb.StatusResponse, error)
+
+	StoresSet(*pb.StoresSetOptions) error
+	StoresDelete(*pb.StoresDeleteOptions) error
+	StoresGet(*pb.StoresGetOptions) (pb.StoresGetResult, error)
+	StoresFind(*pb.StoresFindOptions) (pb.StoresFindResult, error)
 }
 
 func newReply(s string) *pb.Reply {

pkg/grpc/proto/backend_grpc.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go-grpc. DO NOT EDIT.
 // versions:
-// - protoc-gen-go-grpc v1.2.0
+// - protoc-gen-go-grpc v1.3.0
 // - protoc             v4.23.4
 // source: backend.proto
 
@@ -18,6 +18,23 @@ import (
 // Requires gRPC-Go v1.32.0 or later.
 const _ = grpc.SupportPackageIsVersion7
 
+const (
+	Backend_Health_FullMethodName             = "/backend.Backend/Health"
+	Backend_Predict_FullMethodName            = "/backend.Backend/Predict"
+	Backend_LoadModel_FullMethodName          = "/backend.Backend/LoadModel"
+	Backend_PredictStream_FullMethodName      = "/backend.Backend/PredictStream"
+	Backend_Embedding_FullMethodName          = "/backend.Backend/Embedding"
+	Backend_GenerateImage_FullMethodName      = "/backend.Backend/GenerateImage"
+	Backend_AudioTranscription_FullMethodName = "/backend.Backend/AudioTranscription"
+	Backend_TTS_FullMethodName                = "/backend.Backend/TTS"
+	Backend_TokenizeString_FullMethodName     = "/backend.Backend/TokenizeString"
+	Backend_Status_FullMethodName             = "/backend.Backend/Status"
+	Backend_StoresSet_FullMethodName          = "/backend.Backend/StoresSet"
+	Backend_StoresDelete_FullMethodName       = "/backend.Backend/StoresDelete"
+	Backend_StoresGet_FullMethodName          = "/backend.Backend/StoresGet"
+	Backend_StoresFind_FullMethodName         = "/backend.Backend/StoresFind"
+)
+
 // BackendClient is the client API for Backend service.
 //
 // For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
@@ -32,6 +49,10 @@ type BackendClient interface {
 	TTS(ctx context.Context, in *TTSRequest, opts ...grpc.CallOption) (*Result, error)
 	TokenizeString(ctx context.Context, in *PredictOptions, opts ...grpc.CallOption) (*TokenizationResponse, error)
 	Status(ctx context.Context, in *HealthMessage, opts ...grpc.CallOption) (*StatusResponse, error)
+	StoresSet(ctx context.Context, in *StoresSetOptions, opts ...grpc.CallOption) (*Result, error)
+	StoresDelete(ctx context.Context, in *StoresDeleteOptions, opts ...grpc.CallOption) (*Result, error)
+	StoresGet(ctx context.Context, in *StoresGetOptions, opts ...grpc.CallOption) (*StoresGetResult, error)
+	StoresFind(ctx context.Context, in *StoresFindOptions, opts ...grpc.CallOption) (*StoresFindResult, error)
 }
 
 type backendClient struct {
@@ -44,7 +65,7 @@ func NewBackendClient(cc grpc.ClientConnInterface) BackendClient {
 
 func (c *backendClient) Health(ctx context.Context, in *HealthMessage, opts ...grpc.CallOption) (*Reply, error) {
 	out := new(Reply)
-	err := c.cc.Invoke(ctx, "/backend.Backend/Health", in, out, opts...)
+	err := c.cc.Invoke(ctx, Backend_Health_FullMethodName, in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -53,7 +74,7 @@ func (c *backendClient) Health(ctx context.Context, in *HealthMessage, opts ...g
 
 func (c *backendClient) Predict(ctx context.Context, in *PredictOptions, opts ...grpc.CallOption) (*Reply, error) {
 	out := new(Reply)
-	err := c.cc.Invoke(ctx, "/backend.Backend/Predict", in, out, opts...)
+	err := c.cc.Invoke(ctx, Backend_Predict_FullMethodName, in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -62,7 +83,7 @@ func (c *backendClient) Predict(ctx context.Context, in *PredictOptions, opts ..
 
 func (c *backendClient) LoadModel(ctx context.Context, in *ModelOptions, opts ...grpc.CallOption) (*Result, error) {
 	out := new(Result)
-	err := c.cc.Invoke(ctx, "/backend.Backend/LoadModel", in, out, opts...)
+	err := c.cc.Invoke(ctx, Backend_LoadModel_FullMethodName, in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -70,7 +91,7 @@ func (c *backendClient) LoadModel(ctx context.Context, in *ModelOptions, opts ..
 }
 
 func (c *backendClient) PredictStream(ctx context.Context, in *PredictOptions, opts ...grpc.CallOption) (Backend_PredictStreamClient, error) {
-	stream, err := c.cc.NewStream(ctx, &Backend_ServiceDesc.Streams[0], "/backend.Backend/PredictStream", opts...)
+	stream, err := c.cc.NewStream(ctx, &Backend_ServiceDesc.Streams[0], Backend_PredictStream_FullMethodName, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -103,7 +124,7 @@ func (x *backendPredictStreamClient) Recv() (*Reply, error) {
 
 func (c *backendClient) Embedding(ctx context.Context, in *PredictOptions, opts ...grpc.CallOption) (*EmbeddingResult, error) {
 	out := new(EmbeddingResult)
-	err := c.cc.Invoke(ctx, "/backend.Backend/Embedding", in, out, opts...)
+	err := c.cc.Invoke(ctx, Backend_Embedding_FullMethodName, in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -112,7 +133,7 @@ func (c *backendClient) Embedding(ctx context.Context, in *PredictOptions, opts
 
 func (c *backendClient) GenerateImage(ctx context.Context, in *GenerateImageRequest, opts ...grpc.CallOption) (*Result, error) {
 	out := new(Result)
-	err := c.cc.Invoke(ctx, "/backend.Backend/GenerateImage", in, out, opts...)
+	err := c.cc.Invoke(ctx, Backend_GenerateImage_FullMethodName, in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -121,7 +142,7 @@ func (c *backendClient) GenerateImage(ctx context.Context, in *GenerateImageRequ
 
 func (c *backendClient) AudioTranscription(ctx context.Context, in *TranscriptRequest, opts ...grpc.CallOption) (*TranscriptResult, error) {
 	out := new(TranscriptResult)
-	err := c.cc.Invoke(ctx, "/backend.Backend/AudioTranscription", in, out, opts...)
+	err := c.cc.Invoke(ctx, Backend_AudioTranscription_FullMethodName, in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -130,7 +151,7 @@ func (c *backendClient) AudioTranscription(ctx context.Context, in *TranscriptRe
 
 func (c *backendClient) TTS(ctx context.Context, in *TTSRequest, opts ...grpc.CallOption) (*Result, error) {
 	out := new(Result)
-	err := c.cc.Invoke(ctx, "/backend.Backend/TTS", in, out, opts...)
+	err := c.cc.Invoke(ctx, Backend_TTS_FullMethodName, in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -139,7 +160,7 @@ func (c *backendClient) TTS(ctx context.Context, in *TTSRequest, opts ...grpc.Ca
 
 func (c *backendClient) TokenizeString(ctx context.Context, in *PredictOptions, opts ...grpc.CallOption) (*TokenizationResponse, error) {
 	out := new(TokenizationResponse)
-	err := c.cc.Invoke(ctx, "/backend.Backend/TokenizeString", in, out, opts...)
+	err := c.cc.Invoke(ctx, Backend_TokenizeString_FullMethodName, in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -148,7 +169,43 @@ func (c *backendClient) TokenizeString(ctx context.Context, in *PredictOptions,
 
 func (c *backendClient) Status(ctx context.Context, in *HealthMessage, opts ...grpc.CallOption) (*StatusResponse, error) {
 	out := new(StatusResponse)
-	err := c.cc.Invoke(ctx, "/backend.Backend/Status", in, out, opts...)
+	err := c.cc.Invoke(ctx, Backend_Status_FullMethodName, in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *backendClient) StoresSet(ctx context.Context, in *StoresSetOptions, opts ...grpc.CallOption) (*Result, error) {
+	out := new(Result)
+	err := c.cc.Invoke(ctx, Backend_StoresSet_FullMethodName, in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *backendClient) StoresDelete(ctx context.Context, in *StoresDeleteOptions, opts ...grpc.CallOption) (*Result, error) {
+	out := new(Result)
+	err := c.cc.Invoke(ctx, Backend_StoresDelete_FullMethodName, in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *backendClient) StoresGet(ctx context.Context, in *StoresGetOptions, opts ...grpc.CallOption) (*StoresGetResult, error) {
+	out := new(StoresGetResult)
+	err := c.cc.Invoke(ctx, Backend_StoresGet_FullMethodName, in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *backendClient) StoresFind(ctx context.Context, in *StoresFindOptions, opts ...grpc.CallOption) (*StoresFindResult, error) {
+	out := new(StoresFindResult)
+	err := c.cc.Invoke(ctx, Backend_StoresFind_FullMethodName, in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -169,6 +226,10 @@ type BackendServer interface {
 	TTS(context.Context, *TTSRequest) (*Result, error)
 	TokenizeString(context.Context, *PredictOptions) (*TokenizationResponse, error)
 	Status(context.Context, *HealthMessage) (*StatusResponse, error)
+	StoresSet(context.Context, *StoresSetOptions) (*Result, error)
+	StoresDelete(context.Context, *StoresDeleteOptions) (*Result, error)
+	StoresGet(context.Context, *StoresGetOptions) (*StoresGetResult, error)
+	StoresFind(context.Context, *StoresFindOptions) (*StoresFindResult, error)
 	mustEmbedUnimplementedBackendServer()
 }
 
@@ -206,6 +267,18 @@ func (UnimplementedBackendServer) TokenizeString(context.Context, *PredictOption
 func (UnimplementedBackendServer) Status(context.Context, *HealthMessage) (*StatusResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method Status not implemented")
 }
+func (UnimplementedBackendServer) StoresSet(context.Context, *StoresSetOptions) (*Result, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method StoresSet not implemented")
+}
+func (UnimplementedBackendServer) StoresDelete(context.Context, *StoresDeleteOptions) (*Result, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method StoresDelete not implemented")
+}
+func (UnimplementedBackendServer) StoresGet(context.Context, *StoresGetOptions) (*StoresGetResult, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method StoresGet not implemented")
+}
+func (UnimplementedBackendServer) StoresFind(context.Context, *StoresFindOptions) (*StoresFindResult, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method StoresFind not implemented")
+}
 func (UnimplementedBackendServer) mustEmbedUnimplementedBackendServer() {}
 
 // UnsafeBackendServer may be embedded to opt out of forward compatibility for this service.
@@ -229,7 +302,7 @@ func _Backend_Health_Handler(srv interface{}, ctx context.Context, dec func(inte
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: "/backend.Backend/Health",
+		FullMethod: Backend_Health_FullMethodName,
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(BackendServer).Health(ctx, req.(*HealthMessage))
@@ -247,7 +320,7 @@ func _Backend_Predict_Handler(srv interface{}, ctx context.Context, dec func(int
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: "/backend.Backend/Predict",
+		FullMethod: Backend_Predict_FullMethodName,
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(BackendServer).Predict(ctx, req.(*PredictOptions))
@@ -265,7 +338,7 @@ func _Backend_LoadModel_Handler(srv interface{}, ctx context.Context, dec func(i
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: "/backend.Backend/LoadModel",
+		FullMethod: Backend_LoadModel_FullMethodName,
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(BackendServer).LoadModel(ctx, req.(*ModelOptions))
@@ -304,7 +377,7 @@ func _Backend_Embedding_Handler(srv interface{}, ctx context.Context, dec func(i
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: "/backend.Backend/Embedding",
+		FullMethod: Backend_Embedding_FullMethodName,
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(BackendServer).Embedding(ctx, req.(*PredictOptions))
@@ -322,7 +395,7 @@ func _Backend_GenerateImage_Handler(srv interface{}, ctx context.Context, dec fu
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: "/backend.Backend/GenerateImage",
+		FullMethod: Backend_GenerateImage_FullMethodName,
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(BackendServer).GenerateImage(ctx, req.(*GenerateImageRequest))
@@ -340,7 +413,7 @@ func _Backend_AudioTranscription_Handler(srv interface{}, ctx context.Context, d
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: "/backend.Backend/AudioTranscription",
+		FullMethod: Backend_AudioTranscription_FullMethodName,
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(BackendServer).AudioTranscription(ctx, req.(*TranscriptRequest))
@@ -358,7 +431,7 @@ func _Backend_TTS_Handler(srv interface{}, ctx context.Context, dec func(interfa
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: "/backend.Backend/TTS",
+		FullMethod: Backend_TTS_FullMethodName,
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(BackendServer).TTS(ctx, req.(*TTSRequest))
@@ -376,7 +449,7 @@ func _Backend_TokenizeString_Handler(srv interface{}, ctx context.Context, dec f
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: "/backend.Backend/TokenizeString",
+		FullMethod: Backend_TokenizeString_FullMethodName,
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(BackendServer).TokenizeString(ctx, req.(*PredictOptions))
@@ -394,7 +467,7 @@ func _Backend_Status_Handler(srv interface{}, ctx context.Context, dec func(inte
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: "/backend.Backend/Status",
+		FullMethod: Backend_Status_FullMethodName,
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(BackendServer).Status(ctx, req.(*HealthMessage))
@@ -402,6 +475,78 @@ func _Backend_Status_Handler(srv interface{}, ctx context.Context, dec func(inte
 	return interceptor(ctx, in, info, handler)
 }
 
+func _Backend_StoresSet_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(StoresSetOptions)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(BackendServer).StoresSet(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: Backend_StoresSet_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(BackendServer).StoresSet(ctx, req.(*StoresSetOptions))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _Backend_StoresDelete_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(StoresDeleteOptions)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(BackendServer).StoresDelete(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: Backend_StoresDelete_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(BackendServer).StoresDelete(ctx, req.(*StoresDeleteOptions))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _Backend_StoresGet_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(StoresGetOptions)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(BackendServer).StoresGet(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: Backend_StoresGet_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(BackendServer).StoresGet(ctx, req.(*StoresGetOptions))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _Backend_StoresFind_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(StoresFindOptions)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(BackendServer).StoresFind(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: Backend_StoresFind_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(BackendServer).StoresFind(ctx, req.(*StoresFindOptions))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 // Backend_ServiceDesc is the grpc.ServiceDesc for Backend service.
 // It's only intended for direct use with grpc.RegisterService,
 // and not to be introspected or modified (even as a copy)
@@ -445,6 +590,22 @@ var Backend_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "Status",
 			Handler:    _Backend_Status_Handler,
 		},
+		{
+			MethodName: "StoresSet",
+			Handler:    _Backend_StoresSet_Handler,
+		},
+		{
+			MethodName: "StoresDelete",
+			Handler:    _Backend_StoresDelete_Handler,
+		},
+		{
+			MethodName: "StoresGet",
+			Handler:    _Backend_StoresGet_Handler,
+		},
+		{
+			MethodName: "StoresFind",
+			Handler:    _Backend_StoresFind_Handler,
+		},
 	},
 	Streams: []grpc.StreamDesc{
 		{

pkg/grpc/server.go

@@ -167,6 +167,54 @@ func (s *server) Status(ctx context.Context, in *pb.HealthMessage) (*pb.StatusRe
 	return &res, nil
 }
 
+func (s *server) StoresSet(ctx context.Context, in *pb.StoresSetOptions) (*pb.Result, error) {
+	if s.llm.Locking() {
+		s.llm.Lock()
+		defer s.llm.Unlock()
+	}
+	err := s.llm.StoresSet(in)
+	if err != nil {
+		return &pb.Result{Message: fmt.Sprintf("Error setting entry: %s", err.Error()), Success: false}, err
+	}
+	return &pb.Result{Message: "Set key", Success: true}, nil
+}
+
+func (s *server) StoresDelete(ctx context.Context, in *pb.StoresDeleteOptions) (*pb.Result, error) {
+	if s.llm.Locking() {
+		s.llm.Lock()
+		defer s.llm.Unlock()
+	}
+	err := s.llm.StoresDelete(in)
+	if err != nil {
+		return &pb.Result{Message: fmt.Sprintf("Error deleting entry: %s", err.Error()), Success: false}, err
+	}
+	return &pb.Result{Message: "Deleted key", Success: true}, nil
+}
+
+func (s *server) StoresGet(ctx context.Context, in *pb.StoresGetOptions) (*pb.StoresGetResult, error) {
+	if s.llm.Locking() {
+		s.llm.Lock()
+		defer s.llm.Unlock()
+	}
+	res, err := s.llm.StoresGet(in)
+	if err != nil {
+		return nil, err
+	}
+	return &res, nil
+}
+
+func (s *server) StoresFind(ctx context.Context, in *pb.StoresFindOptions) (*pb.StoresFindResult, error) {
+	if s.llm.Locking() {
+		s.llm.Lock()
+		defer s.llm.Unlock()
+	}
+	res, err := s.llm.StoresFind(in)
+	if err != nil {
+		return nil, err
+	}
+	return &res, nil
+}
+
 func StartServer(address string, model LLM) error {
 	lis, err := net.Listen("tcp", address)
 	if err != nil {

pkg/model/initializers.go

@@ -17,6 +17,7 @@ import (
 var Aliases map[string]string = map[string]string{
 	"go-llama": LLamaCPP,
 	"llama":    LLamaCPP,
+	"embedded-store": LocalStoreBackend,
 }
 
 const (
@@ -34,6 +35,8 @@ const (
 	TinyDreamBackend       = "tinydream"
 	PiperBackend           = "piper"
 	LCHuggingFaceBackend   = "langchain-huggingface"
+
+	LocalStoreBackend = "local-store"
 )
 
 var AutoLoadBackends []string = []string{

pkg/store/client.go

@@ -0,0 +1,155 @@
+package store
+
+import (
+	"context"
+	"fmt"
+
+	grpc "github.com/go-skynet/LocalAI/pkg/grpc"
+	"github.com/go-skynet/LocalAI/pkg/grpc/proto"
+)
+
+// Wrapper for the GRPC client so that simple use cases are handled without verbosity
+
+// SetCols sets multiple key-value pairs in the store
+// It's in columnar format so that keys[i] is associated with values[i]
+func SetCols(ctx context.Context, c grpc.Backend, keys [][]float32, values [][]byte) error {
+	protoKeys := make([]*proto.StoresKey, len(keys))
+	for i, k := range keys {
+		protoKeys[i] = &proto.StoresKey{
+			Floats: k,
+		}
+	}
+	protoValues := make([]*proto.StoresValue, len(values))
+	for i, v := range values {
+		protoValues[i] = &proto.StoresValue{
+			Bytes: v,
+		}
+	}
+	setOpts := &proto.StoresSetOptions{
+		Keys:   protoKeys,
+		Values: protoValues,
+	}
+
+	res, err := c.StoresSet(ctx, setOpts)
+	if err != nil {
+		return err
+	}
+
+	if res.Success {
+		return nil
+	}
+
+	return fmt.Errorf("failed to set keys: %v", res.Message)
+}
+
+// SetSingle sets a single key-value pair in the store
+// Don't call this in a tight loop, instead use SetCols
+func SetSingle(ctx context.Context, c grpc.Backend, key []float32, value []byte) error {
+	return SetCols(ctx, c, [][]float32{key}, [][]byte{value})
+}
+
+// DeleteCols deletes multiple key-value pairs from the store
+// It's in columnar format so that keys[i] is associated with values[i]
+func DeleteCols(ctx context.Context, c grpc.Backend, keys [][]float32) error {
+	protoKeys := make([]*proto.StoresKey, len(keys))
+	for i, k := range keys {
+		protoKeys[i] = &proto.StoresKey{
+			Floats: k,
+		}
+	}
+	deleteOpts := &proto.StoresDeleteOptions{
+		Keys: protoKeys,
+	}
+
+	res, err := c.StoresDelete(ctx, deleteOpts)
+	if err != nil {
+		return err
+	}
+
+	if res.Success {
+		return nil
+	}
+
+	return fmt.Errorf("failed to delete keys: %v", res.Message)
+}
+
+// DeleteSingle deletes a single key-value pair from the store
+// Don't call this in a tight loop, instead use DeleteCols
+func DeleteSingle(ctx context.Context, c grpc.Backend, key []float32) error {
+	return DeleteCols(ctx, c, [][]float32{key})
+}
+
+// GetCols gets multiple key-value pairs from the store
+// It's in columnar format so that keys[i] is associated with values[i]
+// Be warned the keys are sorted and will be returned in a different order than they were input
+// There is no guarantee as to how the keys are sorted
+func GetCols(ctx context.Context, c grpc.Backend, keys [][]float32) ([][]float32, [][]byte, error) {
+	protoKeys := make([]*proto.StoresKey, len(keys))
+	for i, k := range keys {
+		protoKeys[i] = &proto.StoresKey{
+			Floats: k,
+		}
+	}
+	getOpts := &proto.StoresGetOptions{
+		Keys: protoKeys,
+	}
+
+	res, err := c.StoresGet(ctx, getOpts)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	ks := make([][]float32, len(res.Keys))
+	for i, k := range res.Keys {
+		ks[i] = k.Floats
+	}
+	vs := make([][]byte, len(res.Values))
+	for i, v := range res.Values {
+		vs[i] = v.Bytes
+	}
+
+	return ks, vs, nil
+}
+
+// GetSingle gets a single key-value pair from the store
+// Don't call this in a tight loop, instead use GetCols
+func GetSingle(ctx context.Context, c grpc.Backend, key []float32) ([]byte, error) {
+	_, values, err := GetCols(ctx, c, [][]float32{key})
+	if err != nil {
+		return nil, err
+	}
+
+	if len(values) > 0 {
+		return values[0], nil
+	}
+
+	return nil, fmt.Errorf("failed to get key")
+}
+
+// Find similar keys to the given key. Returns the keys, values, and similarities
+func Find(ctx context.Context, c grpc.Backend, key []float32, topk int) ([][]float32, [][]byte, []float32, error) {
+	findOpts := &proto.StoresFindOptions{
+		Key: &proto.StoresKey{
+			Floats: key,
+		},
+		TopK: int32(topk),
+	}
+
+	res, err := c.StoresFind(ctx, findOpts)
+	if err != nil {
+		return nil, nil, nil, err
+	}
+
+	ks := make([][]float32, len(res.Keys))
+	vs := make([][]byte, len(res.Values))
+
+	for i, k := range res.Keys {
+		ks[i] = k.Floats
+	}
+
+	for i, v := range res.Values {
+		vs[i] = v.Bytes
+	}
+
+	return ks, vs, res.Similarities, nil
+}

tests/integration/integration_suite_test.go

@@ -0,0 +1,17 @@
+package integration_test
+
+import (
+	"os"
+	"testing"
+
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+	"github.com/rs/zerolog"
+	"github.com/rs/zerolog/log"
+)
+
+func TestLocalAI(t *testing.T) {
+	log.Logger = log.Output(zerolog.ConsoleWriter{Out: os.Stderr})
+	RegisterFailHandler(Fail)
+	RunSpecs(t, "LocalAI test suite")
+}

tests/integration/stores_test.go

@@ -0,0 +1,228 @@
+package integration_test
+
+import (
+	"context"
+	"embed"
+	"math"
+	"os"
+	"path/filepath"
+
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+	"github.com/rs/zerolog"
+	"github.com/rs/zerolog/log"
+
+	"github.com/go-skynet/LocalAI/core/config"
+	"github.com/go-skynet/LocalAI/pkg/assets"
+	"github.com/go-skynet/LocalAI/pkg/grpc"
+	"github.com/go-skynet/LocalAI/pkg/model"
+	"github.com/go-skynet/LocalAI/pkg/store"
+)
+
+//go:embed backend-assets/*
+var backendAssets embed.FS
+
+var _ = Describe("Integration tests for the stores backend(s) and internal APIs", Label("stores"), func() {
+	Context("Embedded Store get,set and delete", func() {
+		var sl *model.ModelLoader
+		var sc grpc.Backend
+		var tmpdir string
+
+		BeforeEach(func() {
+			var err error
+
+			zerolog.SetGlobalLevel(zerolog.DebugLevel)
+
+			tmpdir, err = os.MkdirTemp("", "")
+			Expect(err).ToNot(HaveOccurred())
+			backendAssetsDir := filepath.Join(tmpdir, "backend-assets")
+			err = os.Mkdir(backendAssetsDir, 0755)
+			Expect(err).ToNot(HaveOccurred())
+
+			err = assets.ExtractFiles(backendAssets, backendAssetsDir)
+			Expect(err).ToNot(HaveOccurred())
+
+			debug := true
+
+			bc := config.BackendConfig{
+				Name:    "store test",
+				Debug:   &debug,
+				Backend: model.LocalStoreBackend,
+			}
+
+			storeOpts := []model.Option{
+				model.WithBackendString(bc.Backend),
+				model.WithAssetDir(backendAssetsDir),
+				model.WithModel("test"),
+			}
+
+			sl = model.NewModelLoader("")
+			sc, err = sl.BackendLoader(storeOpts...)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(sc).ToNot(BeNil())
+		})
+
+		AfterEach(func() {
+			sl.StopAllGRPC()
+			err := os.RemoveAll(tmpdir)
+			Expect(err).ToNot(HaveOccurred())
+		})
+
+		It("should be able to set a key", func() {
+			err := store.SetSingle(context.Background(), sc, []float32{0.1, 0.2, 0.3}, []byte("test"))
+			Expect(err).ToNot(HaveOccurred())
+		})
+
+		It("should be able to set keys", func() {
+			err := store.SetCols(context.Background(), sc, [][]float32{{0.1, 0.2, 0.3}, {0.4, 0.5, 0.6}}, [][]byte{[]byte("test1"), []byte("test2")})
+			Expect(err).ToNot(HaveOccurred())
+
+			err = store.SetCols(context.Background(), sc, [][]float32{{0.7, 0.8, 0.9}, {0.10, 0.11, 0.12}}, [][]byte{[]byte("test3"), []byte("test4")})
+			Expect(err).ToNot(HaveOccurred())
+		})
+
+		It("should be able to get a key", func() {
+			err := store.SetSingle(context.Background(), sc, []float32{0.1, 0.2, 0.3}, []byte("test"))
+			Expect(err).ToNot(HaveOccurred())
+
+			val, err := store.GetSingle(context.Background(), sc, []float32{0.1, 0.2, 0.3})
+			Expect(err).ToNot(HaveOccurred())
+			Expect(val).To(Equal([]byte("test")))
+		})
+
+		It("should be able to get keys", func() {
+			//set 3 entries
+			err := store.SetCols(context.Background(), sc, [][]float32{{0.1, 0.2, 0.3}, {0.4, 0.5, 0.6}, {0.7, 0.8, 0.9}}, [][]byte{[]byte("test1"), []byte("test2"), []byte("test3")})
+			Expect(err).ToNot(HaveOccurred())
+
+			//get 3 entries
+			keys, vals, err := store.GetCols(context.Background(), sc, [][]float32{{0.1, 0.2, 0.3}, {0.4, 0.5, 0.6}, {0.7, 0.8, 0.9}})
+			Expect(err).ToNot(HaveOccurred())
+			Expect(keys).To(HaveLen(3))
+			Expect(vals).To(HaveLen(3))
+			for i, k := range keys {
+				v := vals[i]
+
+				if k[0] == 0.1 && k[1] == 0.2 && k[2] == 0.3 {
+					Expect(v).To(Equal([]byte("test1")))
+				} else if k[0] == 0.4 && k[1] == 0.5 && k[2] == 0.6 {
+					Expect(v).To(Equal([]byte("test2")))
+				} else {
+					Expect(k).To(Equal([]float32{0.7, 0.8, 0.9}))
+					Expect(v).To(Equal([]byte("test3")))
+				}
+			}
+
+			//get 2 entries
+			keys, vals, err = store.GetCols(context.Background(), sc, [][]float32{{0.7, 0.8, 0.9}, {0.1, 0.2, 0.3}})
+			Expect(err).ToNot(HaveOccurred())
+			Expect(keys).To(HaveLen(2))
+			Expect(vals).To(HaveLen(2))
+			for i, k := range keys {
+				v := vals[i]
+
+				if k[0] == 0.1 && k[1] == 0.2 && k[2] == 0.3 {
+					Expect(v).To(Equal([]byte("test1")))
+				} else {
+					Expect(k).To(Equal([]float32{0.7, 0.8, 0.9}))
+					Expect(v).To(Equal([]byte("test3")))
+				}
+			}
+		})
+
+		It("should be able to delete a key", func() {
+			err := store.SetSingle(context.Background(), sc, []float32{0.1, 0.2, 0.3}, []byte("test"))
+			Expect(err).ToNot(HaveOccurred())
+
+			err = store.DeleteSingle(context.Background(), sc, []float32{0.1, 0.2, 0.3})
+			Expect(err).ToNot(HaveOccurred())
+
+			val, _ := store.GetSingle(context.Background(), sc, []float32{0.1, 0.2, 0.3})
+			Expect(val).To(BeNil())
+		})
+
+		It("should be able to delete keys", func() {
+			//set 3 entries
+			err := store.SetCols(context.Background(), sc, [][]float32{{0.1, 0.2, 0.3}, {0.4, 0.5, 0.6}, {0.7, 0.8, 0.9}}, [][]byte{[]byte("test1"), []byte("test2"), []byte("test3")})
+			Expect(err).ToNot(HaveOccurred())
+
+			//delete 2 entries
+			err = store.DeleteCols(context.Background(), sc, [][]float32{{0.1, 0.2, 0.3}, {0.7, 0.8, 0.9}})
+			Expect(err).ToNot(HaveOccurred())
+
+			//get 1 entry
+			keys, vals, err := store.GetCols(context.Background(), sc, [][]float32{{0.4, 0.5, 0.6}})
+			Expect(err).ToNot(HaveOccurred())
+			Expect(keys).To(HaveLen(1))
+			Expect(vals).To(HaveLen(1))
+			Expect(keys[0]).To(Equal([]float32{0.4, 0.5, 0.6}))
+			Expect(vals[0]).To(Equal([]byte("test2")))
+
+			//get deleted entries
+			keys, vals, err = store.GetCols(context.Background(), sc, [][]float32{{0.1, 0.2, 0.3}, {0.7, 0.8, 0.9}})
+			Expect(err).ToNot(HaveOccurred())
+			Expect(keys).To(HaveLen(0))
+			Expect(vals).To(HaveLen(0))
+		})
+
+		It("should be able to find smilar keys", func() {
+			// set 3 vectors that are at varying angles to {0.5, 0.5, 0.5}
+			err := store.SetCols(context.Background(), sc, [][]float32{{0.5, 0.5, 0.5}, {0.6, 0.6, -0.6}, {0.7, -0.7, -0.7}}, [][]byte{[]byte("test1"), []byte("test2"), []byte("test3")})
+			Expect(err).ToNot(HaveOccurred())
+
+			// find similar keys
+			keys, vals, sims, err := store.Find(context.Background(), sc, []float32{0.1, 0.3, 0.5}, 2)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(keys).To(HaveLen(2))
+			Expect(vals).To(HaveLen(2))
+			Expect(sims).To(HaveLen(2))
+
+			for i, k := range keys {
+				s := sims[i]
+				log.Debug().Float32("similarity", s).Msgf("key: %v", k)
+			}
+
+			Expect(keys[0]).To(Equal([]float32{0.5, 0.5, 0.5}))
+			Expect(vals[0]).To(Equal([]byte("test1")))
+			Expect(keys[1]).To(Equal([]float32{0.6, 0.6, -0.6}))
+		})
+
+		It("should be able to find similar normalized keys", func() {
+			// set 3 vectors that are at varying angles to {0.5, 0.5, 0.5}
+			keys := [][]float32{{0.1, 0.3, 0.5}, {0.5, 0.5, 0.5}, {0.6, 0.6, -0.6}, {0.7, -0.7, -0.7}}
+			vals := [][]byte{[]byte("test0"), []byte("test1"), []byte("test2"), []byte("test3")}
+			// normalize the keys
+			for i, k := range keys {
+				norm := float64(0)
+				for _, x := range k {
+					norm += float64(x * x)
+				}
+				norm = math.Sqrt(norm)
+				for j, x := range k {
+					keys[i][j] = x / float32(norm)
+				}
+			}
+
+			err := store.SetCols(context.Background(), sc, keys, vals)
+			Expect(err).ToNot(HaveOccurred())
+
+			// find similar keys
+			ks, vals, sims, err := store.Find(context.Background(), sc, keys[0], 3)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(ks).To(HaveLen(3))
+			Expect(vals).To(HaveLen(3))
+			Expect(sims).To(HaveLen(3))
+
+			for i, k := range ks {
+				s := sims[i]
+				log.Debug().Float32("similarity", s).Msgf("key: %v", k)
+			}
+
+			Expect(ks[0]).To(Equal(keys[0]))
+			Expect(vals[0]).To(Equal(vals[0]))
+			Expect(sims[0]).To(BeNumerically("~", 1, 0.0001))
+			Expect(ks[1]).To(Equal(keys[1]))
+			Expect(vals[1]).To(Equal(vals[1]))
+		})
+	})
+})