Protobuf Schema Definition

Welcome! In this lesson, we'll dive into Protocol Buffers, often called Protobuf. It's a key technology for gRPC.

• Protobuf is a language-neutral, platform-neutral, extensible mechanism for serializing structured data. Think of it as a highly efficient way to define and exchange data.
• It's like JSON or XML, but smaller, faster, and simpler.
• gRPC uses Protobuf to define the service interface and the structure of the payload messages.

Protobuf schemas are defined in special files ending with the .proto extension. These files act as contracts for your data.

• Every .proto file starts with a syntax declaration, usually syntax = "proto3";. This tells the Protobuf compiler which version of the syntax to use.
• It's crucial for forward and backward compatibility.