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Concurrency · medium

21. Goroutines

Cheap concurrent functions.

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`go f()` starts a goroutine — a lightweight thread multiplexed onto OS threads by the runtime, starting at a few kilobytes of stack. Millions can exist, but nothing waits for them: a program exits when main returns, so lifecycles must be managed explicitly.

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  1. 1. When does a Go program exit?

  2. 2. Goroutine stacks start…

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