The user wants me to rewrite the headline "gRPC Internals and Performance" for a mobile feed.

Short summary

This article explains gRPC internals, covering how Protocol Buffers provide compact binary serialization and how HTTP/2 enables multiplexing, header compression, and binary framing for efficient service-to-service communication. It walks through .proto file definitions, code generation with protoc, and the request/response lifecycle from client stub to server implementation. A Go server example demonstrates practical implementation of a Greeter service.

• •gRPC uses Protocol Buffers for compact, schema-driven binary serialization instead of JSON/XML
• •HTTP/2 multiplexing and HPACK header compression reduce latency vs traditional REST over HTTP/1.1
• •protoc generates language-specific client stubs and server interfaces from .proto definitions

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