How does Saga Design Pattern Works in Microservice Architecture?

What is Saga Design Pattern in Microservice Architecture? What Problem does it solve? When to use Saga?

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Hello guys, if you are working in a Microservice architecture or preparing for Software developer interview where Microservice skills are needed then you must prepare about the Saga Pattern.

Saga is an essential Microservice pattern that aims to solve the problem of long-lived transactions in Microservice architecture. It’s also one of the popular Microservice Interview Questions which is often asked to experienced developers.

Since Microservice architecture breaks your application into multiple small applications, a single request is also broken down into multiple requests and there is a chance that some parts of requests succeed and some parts fail, in that case, maintaining data consistency is hard.

If are you dealing with real data like placing an order on Amazon then you must handle this scenario gracefully so that if payment fails then inventory reverts to its original state as well as order is not shipped.

Saga Pattern helps you there.

I briefly touched about Saga Pattern earlier in my article about 24 Microservices design patterns for developers and in this article, I will explain what is Saga Pattern? What it does, which problem it solves as well as pros and cons of Saga Pattern in a Microservice architecture.

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What is the Saga Design Pattern? What problem does it solve?

The SAGA (or Saga) pattern is a Microservice design pattern for managing data consistency in distributed systems.