Building the Microservice Application

Previously, we spent a lot of time building API services for various applications using the core features of FastAPI. We also started applying important design patterns such as Inversion of Control (IoC) and Dependency Injection (DI), which are essential for managing FastAPI container objects. External Python packages were installed and used to provide options on what containers to use in managing objects.

These design patterns can help not only with managed objects in container but also when building scalable, enterprise-grade, and unconventionally complex applications. Most of these design patterns help break down monolithic architecture into loosely coupled components that are known as microservices.

In this chapter, we will explore some architectural design patterns and principles that can provide strategies and ways to initiate the building of our microservices from a monolithic application. Our focus will be on breaking the huge application...