Saga Client Server File
[1] Garcia-Molina, H., & Salem, K. (1987). Sagas. Proceedings of the 1987 ACM SIGMOD International Conference on Management of Data, 249-259.
: Each step in the saga is an independent, atomic operation within its own service and database.
) to the client once the final step or compensation is complete. Synchronous Wait saga client server
From the client's perspective, the Saga Server acts like a standard synchronous API. The complexity of distributed rollbacks is entirely hidden inside the server.
By mastering these client-server dynamics, you transform the Saga Pattern from a theoretical concept into a production-grade tool for data consistency at scale. [1] Garcia-Molina, H
: The actual microservices that perform the local transactions (e.g., "Reserve Credit," "Ship Product"). These servers are stateless from the Saga’s perspective; they simply do their job and report back.
A Saga Client Server consists of the following components: Proceedings of the 1987 ACM SIGMOD International Conference
| Challenge | Description | Solution | | :--- | :--- | :--- | | | Client cannot see intermediate progress | Provide a GET /saga/id/status endpoint with current step | | Long-running locks | A flight seat held for hours while user pays | Implement "Timeout" steps in Saga. If timeout expires, auto-compensate | | Orchestrator failure | The Saga Server crashes mid-transaction | Persist state before each command. Upon restart, recover pending Sagas | | Poison messages | A Worker service always fails | Dead-letter queue + manual intervention endpoint for client | | Distributed tracing | Debugging cross-service calls | Pass TraceId from Client -> Saga Server -> Worker Services |