Doesn’t it feel like microservices are everywhere these days?
Whenever you think of migrating a monolithic application to microservices, ask yourself two questions:
Should you migrate a monolith app to Microservices?
If so, when should you transit to Microservices?
First, let’s see the basic differences between a monolith app and microservices architecture below:
Monolith Architecture
As you can see in the diagram, a monolith application is a single unit. It is a tightly coupled system that contains all the functional modules, business logic, background processing and various database-related operations.
It is good to develop a monolith application for simple purposes because it is easy to test it and there is only one application scheduled for a release.
But when there is a small bug, you need to do small changes and then create a new build and deploy it.
Scaling up an application is the biggest issue in monolith applications. Scaling only some parts of the application is not possible and you need to scale the entire system. In such situations, many organizations struggle with becoming agile hence each action takes too much time and effort. Original Source : Migrating Strategies to move Existing Applications to Microservices