Microservices Communication : API Gateway , Service discovery server Quick Start — Part- 1
In this blog i will be explaining about
- Why and What is API Gateway?
- Service Discovery
Why and What is API Gateway ?
- The important reason of the microservices pattern is to create an independent service which can be scaled and deployed independently.
- So in a complex business domain, more than 50–100 microservices is very common.
- Let’s imagine a system where we have 50 microservices ,now we have to implement a UI, so it calls multiple services to fetch and show the important information in the UI.
- From a UI developer perspective, to collect information from fifty underlying microservices, it has to call fifty REST APIs, as each microservice exposes a REST API for communication.
- So the client has to know the details of all REST API and URL patterns/ports to call them. Certainly, it does not sound like a good design.It is kind of a breach of encapsulation
- Moreover, think about the common aspects of a web program, like CORS, authentication, security, and monitoring in terms of this design- each microservice team has to develop all these aspects into its own service, so the…
