Recap of gRPC

If you have read Chapter 1, you should be familiar with the concept of RPC – it is a protocol that allows a program to call a procedure on a remote machine. Unlike RESTful APIs, which center around resources, RPC-based APIs focus on actions. So, RPC methods support various types of actions besides CRUD operations.

gRPC is one of the most popular RPC frameworks. It provides many benefits over traditional RPC frameworks. As we mentioned in Chapter 1, gRPC is based on HTTP/2, which is more efficient than HTTP/1.1. gRPC uses protobuf as the default data serialization format, which is a binary format that is more compact and efficient than JSON. The tooling support for gRPC is also very good. It follows the contract-first approach, which means we can create language-neutral service definitions and generate code for different languages. It also supports streaming, which is a very useful feature for real-time communication.

With the increasing popularity of microservices...