Setting up service registry and client-side service discovery

A service registry tool such as Netflix Eureka enables the registration of microservice applications without knowing the exact DNS locations of their servers. It manages all access to these registered services using a load-balancing algorithm and dynamically assigns these service instances with network locations. This service registration is helpful to microservice applications deployed to servers with changing DNS names due to failures, upgrades, and enhancements.

For the service registry to work, the service instances should have a mechanism to discover the registry server before the server registration. For FastAPI, we need to utilize the py_eureka_client module to implement the service discovery design pattern.

Implementing client-side service discovery

Creating a FastAPI microservice application to discover and register to a service registry server such as Netflix Eureka is straightforward. First, we need to...