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by riobard
1374 days ago
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Right now the idiomatic Go approach to handle networking is 2-goroutine per socket (one for reading and the other for writing). Goroutines are very lightweight userspace threads, but they're not free: each costs you a small amount of memory. At Cloudflare's scale, this overhead quickly adds up. So resource-wise, Go isn't ideal for very large scale use cases. There is a more-than-6-year-old proposal to introduce non-blocking I/O API (https://github.com/golang/go/issues/15735) but so far it's not gaining much traction. Maybe in Go2. |
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