TL;DR Link to heading A Go channel is one primitive covering what other languages split across locks, condition variables, semaphores, and queues. That consolidation is the thread I kept pulling on while reading. Motivation Link to heading Channels come up in every Go pitch. I wanted to understand why. What a channel actually is Link to heading In most languages you get shared memory plus coordination tools: mutexes for exclusion, condition variables for waiting, semaphores for counting, queues for handoff. Synchronisation and data are separate problems with separate primitives.
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