▲ 7 ▼ Principles of designing go apis with channels

Channels are concurrent-safe queues that are used to safely pass messages between Go’s lightweight processes (goroutines). Together, these primitives are some of the most popularly touted features of the Go programming language. The message-passing style they encourage permits the programmer to safely coordinate multiple concurrent tasks with easy-to-reason-about semantics and control flow that often trumps the use of callbacks or shared memory.