LobstersAnton Zhiyanov30 min readtutorialintermediate
Go concurrency distilled
Summary
The article is a concise, example‑driven mini‑book that reviews Go’s core concurrency primitives—goroutines, channels, select, pipelines, and related patterns. It shows practical code snippets for coordination, cancellation, and safe channel usage, serving as a quick refresher for experienced Go developers.
- Use sync.WaitGroup (or WaitGroup.Go) to wait for multiple goroutines and avoid premature exit.
- Unbuffered channels block on send/receive; buffered channels act as FIFO queues and can be inspected with len/cap.
- Declare channel direction (chan<- , <-chan) in function signatures to prevent accidental reads or writes.
- select lets you multiplex channel operations, implement non‑blocking sends, and handle cancellation via a cancel channel.
Go engineers who need a fast, code‑first refresher on concurrency patterns will find it immediately applicable.
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