context.Context in Go: Essence and Common Mistakes

This Habr article provides an in-depth analysis of the context.Context mechanism in the Go programming language. The author explores the fundamental role of context in managing request lifecycles, propagating cancellation signals, and handling deadlines across goroutines. The material details common mistakes developers encounter when using this tool, such as improper context propagation, ignoring cancellation signals, or using context to store business logic unrelated to request metadata. The author offers practical recommendations for designing APIs with context to prevent memory leaks and goroutine hangs. This article is useful for both novice developers and experienced engineers looking to systematize their knowledge of concurrent programming in Go and improve the reliability of their services.