Go语言并发模式：从Goroutine到实战设计模式
Go Concurrency Patterns: From Goroutines to Production Design
| iDev Tech | 2026-08-25T10:00:00
深入解析Go语言并发编程的核心模式，包括Pipeline、Fan-out/Fan-in、Worker Pool和Context控制。
Deep dive into Go's core concurrency patterns including Pipeline, Fan-out/Fan-in, Worker Pool, and Context-based control.
Goroutine与Channel基础Go的并发模型基于CSP（Communicating Sequential Processes）。Goroutine是轻量级线程（约2KB栈空间），Channel是Goroutine之间的类型安全通信管道。核心原则："不要通过共享内存来通信，而是通过通信来共享内存。"Pipeline模式将数据处理分解为多个阶段，每个阶段由一组Goroutine执行。阶段之间通过Channel连接。适合ETL数据处理、流式计算等场景。关键实现：每个阶段函数接收输入Channel、返回输出Channel。Fan-out/Fan-inFan-out：多个Goroutine从同一个Channel读取，实现并行处理。Fan-in：多个Channel的结果汇总到一个Channel。结合使用实现并行化流水线。注意使用sync.WaitGroup确保所有Worker完成后关闭输出Channel。
Goroutine and Channel BasicsGo's concurrency model is based on CSP (Communicating Sequential Processes). Goroutines are lightweight threads (~2KB stack), and Channels are type-safe communication pipes between Goroutines. Core principle: "Don't communicate by sharing memory; share memory by communicating."Pipeline PatternDecompose data processing into multiple stages, each executed by a set of Goroutines connected via Channels. Ideal for ETL processing and stream computing. Key implementation: each stage function receives an input Channel and returns an output Channel.Fan-out/Fan-inFan-out: multiple Goroutines read from the same Channel for parallel processing. Fan-in: results from multiple Channels merge into one. Combined to parallelize pipelines. Use sync.WaitGroup to ensure all workers complete before closing the output Channel.