Published: Feb 21, 2021 by marc
This story wants to help who is given the task of breaking down a big application into microservices or to help who just want to have a better understanding of a complex Spring application. Migrating an application to microservices means splitting the application and the database into isolated microservices and let them communicate through REST APIs and/or messages.
Here I am assuming that you are working with a large Spring application that exposes REST APIs and persists data in a database.
The first step is to understand how the APIs interact with the data.
When a REST API is called, how many database tables are affected?
It is not trivial to answer this question if you are dealing with a complex and large Monolith.
To try to answer that question, we can use a static call graph generator and then use a visualization library to display it.
Check out the rest of the article on Medium.