优雅重启或停止
最后更新于：2022-04-02 07:27:14
想要优雅地重启或停止你的Web服务器，使用下面的方法
我们可以使用[fvbock/endless](https://github.com/fvbock/endless)来替换默认的`ListenAndServe`，有关详细信息，请参阅问题[＃296](https://github.com/gin-gonic/gin/issues/296)
```
router := gin.Default()
router.GET("/", handler)
// [...]
endless.ListenAndServe(":4242", router)
```
一个替换方案
- [manners](https://github.com/braintree/manners)：一个Go HTTP服务器，能优雅的关闭
- [graceful](https://github.com/tylerb/graceful)：Graceful是一个go的包，支持优雅地关闭http.Handler服务器
- [grace](https://github.com/facebookgo/grace)：对Go服务器进行优雅的重启和零停机部署
如果你的Go版本是1.8，你可能不需要使用这个库，考虑使用http.Server内置的[Shutdown()](https://golang.org/pkg/net/http/#Server.Shutdown)方法进行优雅关闭，查看[例子](https://github.com/gin-gonic/gin/tree/master/examples/graceful-shutdown)
```
// +build go1.8
package main
import (
"context"
"log"
"net/http"
"os"
"os/signal"
"time"
"github.com/gin-gonic/gin"
)
func main() {
router := gin.Default()
router.GET("/", func(c *gin.Context) {
time.Sleep(5 * time.Second)
c.String(http.StatusOK, "Welcome Gin Server")
})
srv := &http.Server{
Addr: ":8080",
Handler: router,
}
go func() {
// service connections
if err := srv.ListenAndServe(); err != nil && err != http.ErrServerClosed {
log.Fatalf("listen: %s\n", err)
}
}()
// Wait for interrupt signal to gracefully shutdown the server with
// a timeout of 5 seconds.
quit := make(chan os.Signal)
signal.Notify(quit, os.Interrupt)
<-quit
log.Println("Shutdown Server ...")
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
defer cancel()
if err := srv.Shutdown(ctx); err != nil {
log.Fatal("Server Shutdown:", err)
}
log.Println("Server exiting")
}
```
';