Managing a microservice’s configuration details

So far, this chapter has provided us with some popular design patterns and strategies that can give us a kickstart on how to provide our FastAPI microservices with the best structures and architecture. This time, let us explore how the FastAPI framework supports storing, assigning, and reading configuration details to mounted microservice applications such as database credentials, networking configuration data, application server information, and deployment details. First, we need to install python-dotenv using pip:

pip install python-dotenv

All of these settings are values that are external to the implementation of the microservice applications. Instead of hardcoding them into the code as variable data, usually, we store them in the env, property, or INI files. However, challenges arise when assigning these settings to different microservices.

Frameworks that support the externalized configuration design pattern have...