内存预分配与race limit on 8128

go test -count=1 -race ./… -v

package utils

var buf = make([]byte, 5010241024) // 50M static buffer

起10000个协程

这个没有用的变量干掉了竟然是race: limit on 8128 simultaneously alive goroutines is exceeded, dying的原因

https://ifun.dev/post/golang-concurrency/