Over the years, I have worked with various Monolith applications and migrated a few of them to micro-services. I am going to write about what I learned and the strategy I used from my experience for a successful migration. In this post, I’ll use AWS for the reference, but the underlying principle will remain the same and can be used for any type of infrastructure.
The Monolith
A monolith is a large code repository with all the functionality implemented in a single place. This makes it complex and hard to maintain as application features and complexity increase. The code repository contains not only all the core logic to support related functionality but also code to support unrelated functionality. Even a minor bug fix or feature release will need testing to complete the application. The main pains I have faced are: