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How can you use the Saga pattern in Microservices?

Using Saga Patterns in Microservices

Microservices architecture is quite popular because of the impressive benefits that come along with it. People who develop large-scale applications prefer to go ahead with it. Although, there can be some challenges involved as well. One of the biggest challenges is the difficulty in handling transactions across multiple services. That’s where you should think about Saga Pattern. Saga & Event-driven architecture is a proven method available to overcome that challenge. 

Why do you need to use Saga Pattern? 

When you deep dive and look at the Microservice Architecture, you will notice that it provides you with the ability to maintain applications within the database separately. However, there are some challenges that you will need to overcome when you are trying to propagate across several devices.

To better understand this, let’s look at a ticketing system developed based on microservices. Then you can observe that there are individual microservices available for payment processing, ticket booking, sending information to customers, and updating allocation. Assume that a person uses this system to make a booking. Then the system would invoke multiple microservice and complete the overall flow. The flow would start from booking, and then it will go to payment, seat allocation, and confirmation sent. Imagine what would happen if one of these steps failed. Then we will need to roll back to the previous step so that we can maintain data integrity. This is where Saga & Event-driven architecture would help.

How would Saga Pattern benefit you? 

The Saga pattern can manage transactions that are across several microservices. This will be done through a series of local transactions. If there is a failure, the Saga Execution Controller will trigger events. This will be done to maintain the overall stability of the system.

To better understand this, you need to be aware of what the Saga Execution Controller is all about. It is a centralized component that is capable of controlling local transactions. It will also rollback events during a failure. It will ensure that rolling back events will not create any extra effect, instead of just reversing the local transaction.

How to implement Saga Pattern?

As you can see, the Saga pattern would benefit you in multiple ways. Hence, you need to proceed with implementing the Saga pattern as well. There are a few different approaches available to proceed at the implementation time. It would be best if you worked with an expert developer who will analyze the requirements based on your system and implement them.

It is important to be extra careful when implementing the Saga pattern when existing microservices are already implemented. On the other hand, one should be mindful when managing a situation where numerous microservices are taking part in a single transaction. 

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Hexaview Technologies is a leading  FinTech Software development firm that provides feature-rich FinTech Solutions to renowned companies all across the globe. They are among the top-rated Salesforce development company, cloud computing consulting services firms, and data science services companies.