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* Remove all notion of message level retry. * Introduce randomness into de-duplication IDs based on the session rather than the flow, in support of idempotent flows. * CORDA-1494: Re-enable notarisation retries in the new state machine manager. The original message-based retry approach does not work well with the new flow state machine due to the way sessions are handled. We decided to move the retry logic to flow-level: introduce RetryableFlow that won't have checkpoints persisted and will be restarted after a configurable timeout if it does not complete in time. The RetryableFlow functionality will be internal for now, as it's mainly tailored for the notary client flow, and there are many subtle ways it can fail when used with arbitrary flows.
Corda
Corda is an open source blockchain project, designed for business from the start. Only Corda allows you to build interoperable blockchain networks that transact in strict privacy. Corda's smart contract technology allows businesses to transact directly, with value.
Features
- Smart contracts that can be written in Java and other JVM languages
- Flow framework to manage communication and negotiation between participants
- Peer-to-peer network of nodes
- "Notary" infrastructure to validate uniqueness and sequencing of transactions without global broadcast
- Enables the development and deployment of distributed apps called CorDapps
- Written in Kotlin, targeting the JVM
Getting started
- Read the Getting Started documentation
- Run the Example CorDapp
- Read about Corda's Key Concepts
- Follow the Hello, World! tutorial
Useful links
- Project Website
- Mailing Lists
- Documentation
- Stack Overflow Tag
- Slack Channel
- Meetups
- Training Courses
Contributing
We welcome contributions to Corda! Please see our CONTRIBUTING.md.
License
Acknowledgements
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