Bounded Parallelism in Go Worker Pools: Semaphore Mechanics, Backpressure Propagation, and the Starvation Boundary
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dev.to
Bounded Parallelism in Go Worker Pools: Semaphore Mechanics, Backpressure Propagation, and the Starvation Boundary Unbounded goroutine creation is the most common concurrency bug in production Go services. The failure mode is insidious: under normal load, spawning a goroutine per request or per fan-out task works fine. Under a load spike, the scheduler queues hundreds of goroutines that all contend for the same downstream resource—a MongoDB connection pool, a Redis pipeline, an S3 pre