LuTiao Programming

Jan 11, 2026 · Backend Development

Beyond HTTP: Building a Custom TCP Protocol with Spring Boot and Netty from Scratch

This article walks through why raw ServerSocket code is unsuitable for high‑concurrency custom protocols, explains Netty’s event‑driven architecture, and provides a step‑by‑step Spring Boot integration—including Maven setup, boss/worker groups, pipeline configuration, a ByteToMessageDecoder for a 49‑byte binary format, and a business handler—to achieve a clean, maintainable TCP solution.