Saga Client Server -

A is a sequence of local transactions, each managed by a single service. Each local transaction updates its own database and publishes an event or triggers the next transaction. If a local transaction fails, the Saga executes a series of compensating transactions to undo the changes made by the preceding successful transactions. Critically, a Saga does not have a global rollback like an ACID transaction; it achieves consistency through a series of explicit, application-level undo operations.

In a client-server environment, the Saga pattern must be implemented in the server-side logic. There are two dominant approaches: saga client server

In a traditional client-server architecture, a client sends a request to a server, and the server processes the request and returns a response. However, in a distributed system, the server may need to interact with multiple services or databases to fulfill the request, which can lead to complexity, scalability issues, and fault tolerance concerns. A is a sequence of local transactions, each

In this approach, a central (a dedicated service or part of an API gateway) receives the client’s request. The orchestrator tells each participating service what to do and when. It maintains the state machine of the Saga. If a service fails, the orchestrator decides the compensation path and invokes the compensating actions. Critically, a Saga does not have a global

Let’s walk through a real-world example: .

In a client-server context, the Saga Pattern is an architectural strategy used to manage distributed transactions and maintain data consistency across multiple services or databases. Unlike traditional atomic transactions, a Saga breaks a large business process into a sequence of smaller "local" transactions. Core Concept: The Chain of Events