timeouts _ golang

Go语言中的超时处理

最新推荐文章于 2025-09-13 18:22:14 发布

Rki-dor

最新推荐文章于 2025-09-13 18:22:14 发布

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CC 4.0 BY-SA版权

文章标签： golang

原文链接：http://www.cnblogs.com/jackkiexu/p/4341688.html

本文介绍了如何在Go语言中优雅地实现超时处理。通过使用channel和select语句，可以轻松为网络请求或其他可能阻塞的操作设置超时。文章通过两个示例展示了如何在指定时间内接收通道数据或在超时后采取其他行动。

Timeouts are import for programs that connect to external resources or that otherwise need to bound execution time. Implementing timeouts in Go is easy and elegant thanks to channels and select

package main

import (
    "fmt"
    "time"
)

func main() {
    c1 := make(chan string, 1)
    go func() {
        // time.Sleep(time.Second * 2)
        c1 <- "result 1"
    }()

    select {
    case res := <-c1:
        fmt.Println(res)
    case <-time.After(time.Second * 1):
        fmt.Println("time out 1")
    }

    c2 := make(chan string, 1)
    go func() {
        time.Sleep(time.Second * 2)
        c2 <- "result 2"
    }()

    select {
    case res := <-c2:
        fmt.Println(res)
    case <-time.After(time.Second * 3):
        fmt.Println("time out 2")
    }
}