composable-rust-sagas

Distributed sagas in Rust are coordinated using reducer-style state machines that manage local transactions across aggregates, ensuring reliable compensation flows and cross-service workflow orchestration when steps fail.

Rollback logic in a Rust CQRS backend is handled through saga compensation patterns, which execute reversing operations when steps fail, supported by idempotent handling and retries to maintain data consistency.

Publish and subscribe semantics for saga events in Rust are achieved through EventBus integrations, enabling services to emit next-step commands and consume transition events via Redpanda or Kafka brokers.

Nested sagas can orchestrate complex workflows like Order, Payment, and Inventory in Rust by applying centralized compensation, timeouts, and idempotency across multiple service boundaries.

Orchestration centralizes saga coordination for clear control over multi-aggregate flows, whereas choreography relies on event-driven reactions; the choice depends on your workflow complexity and visibility requirements.

Idempotency and timeouts for Rust saga reducers are implemented by applying specific patterns that ensure safe retries and prevent hanging states during cross-service distributed transactions.