Goroutines — Stack Growth, Scheduling Cost, and Preemption
Measure the real cost of goroutine creation, stack growth, and scheduling. Understand goroutines as a resource with allocation and GC implications.
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What this chapter teaches
Goroutines are free; spawn as many as you like.
each is cheap but not free — a stack allocation, scheduling metadata, and growth-copy events that show up in allocation profiles at high creation rates or deep stacks.
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