Blog

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.

This post is an updated version of this article and will be updated on a daily basis.

Maps in Python are called dict. To create one, you have to choose an hashable object as key and a value.
What is an hashable object?
An hashable object is an object with a hash which never changes during its lifetime. Such objects are called immutable.
Python offers the following hashable built-in objects.

As of today there are around 7.7 bilion people in the world.
Image that we have a file containing all the people, line by line like this: