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Tuesday 20 November 2018
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Using Microservices? They should be Strong and Fault Tolerant!

Using Microservices? They should be Strong and Fault Tolerant!

A microservice refers to an application that consists of a number of associated services, which are intended to develop and deliver business capabilities. The microservice architecture helps by making it possible to continuously deploy complex applications. Right?  It also makes the evolution of an organization’s technology stack possible. After learning about microservice architecture, one question that you may have is whether microservices have the potential to benefit your organization.

In short, the effectiveness of microservices depends on their implementation as well as the structure of an organization. Microservice architecture is said to allow applications easier to update, more secure, and more efficient. However, to enjoy these advantages, it is essential that microservices are implemented properly. Your approach to the implementation of microservices should focus on resilience and fault tolerance. Here is some information that will help you make your microservices resilient and fault tolerant.

Easy Isolation of Failures

To make your microservices resilient and fault tolerant, you should make it easy to isolate failures and accomplish fluid service degradation. Each microservice should represent a different component of a full application. The microservices should be able to function independently from each other. That way, if one microservice fails, your customers are still able to able to use other features of the application. For example, during an outage, users may not be able to upload new files but they may still be able to access already existing files.

Separate Data Stores

When it comes to microservice architecture, it is recommended that you use separate data stores for each microservice. You should not use the same backend data for multiple microservices. You should select the best-suited database for each microservice.

Without separate data stores, it becomes too easy for microservices developed by different teams to share the same database structures. Teams often use the same database structure for different microservices in the hopes of saving time. However, this often leads to a situation where if one team makes changes to a database structure, the other services that rely on that database structure need to be updated as well.

As you can imagine, splitting up data between microservices can make data management more complex. This is because the separate data stores can become inconsistent. Therefore, it is recommended that you use a tool for master data management to identify and resolve these inconsistencies.

Keep Code Consistent

You should keep the code for each microservice consistent when it comes to stability and maturity. Essentially, if you need to make changes to the code of a deployed microservice, you should create a new microservice for the updated code and retain the previous version of the microservice. This allows you to test the new code until it is efficient and bug-free. Once you have fully tested the new microservice and have confirmed that it is as stable as the previous version, you can merge the two microservices together.

If a microservice becomes too big, you should consider splitting it up into multiple microservices. Splitting up a microservice often makes the addition of new features and functionalities easier by streamlining the code.

As long as you have the right approach to microservice architecture, the use of microservices to create your applications can benefit your organization significantly. For more information about how to make your microservices resilient and fault tolerant, don’t hesitate to contact us.

More about Microservices and how they can help

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Microservices: Scalability For An Emerging Networking Paradigm




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