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This is the documentation for the unstable version of Hydra. For the latest stable version, see here.

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unstable

Topologies Use cases FAQs

Architecture Decision Records

2025

32. Network layer properties, implementation using etcd

2024

31. Achieve constant memory in hydra-node

2023

23. Local chain state in chain layer
24. Persist state changes incrementally
25. Event-sourced, resource-based API
26. Stateless transaction observation & construction
27. Network failures model
28. Offline mode
29. EventSource & EventSink abstractions
30. Use CBOR in external representation of Cardano transactions

2022

13. Plutus Contracts Testing Strategy
14. Token usage in Hydra Scripts
15. Configuration Through an Admin API
16. Keep Rejected ADRs
17. Use UDP protocol for Hydra networking
18. Single state in Hydra.Node.
19. Use of reference scripts
20. Handling time
21. Bounded transaction validity on Hydra protocol transactions
22. Test High-level Properties using Model-Based Testing

2021

1. Record Architecture Decisions
2. Reactive Core
3. Asynchronous Duplex Client API
4. Use Handle to model Effects
5. Use io-classes
6. Network broadcasts all messages
7. Use with-pattern based component interfaces
8. Custom Prelude
9. Simplify Logging
10. Use direct connection to `cardano-node`
11. Use cardano-api
12. Top-down Test-driven Design

Tags

A

Accepted26

P

Proposed3

S

Superseded3

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