Mastering Python Design Patterns - Second Edition

The Microservices pattern

Before Microservices, developers of an application have been using a single code base for implementing all functionalities. For example, the front-end UI that includes forms, buttons, and specialized JavaScript code for interactions and effects, the application logic that handles all the passage of data between the UI and the database, and another application logic that, based on triggers or scheduling, does some asynchronous actions behind the scenes, such as sending email notifications. Even the administration UI, as in a Django-based application, would be inside the same application.

For this way of building an application, we talk about the Monolith model or using a Monolithic architecture.

There is a cost to ...