负载均衡
Load Balancing - 负载均衡
原文：https://echo.labstack.com/docs/cookbook/load-balancing
This recipe demonstrates how you can use Nginx as a reverse proxy server and load balance between multiple Echo servers.
Echo
cookbook/load-balancing/upstream/server.go
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| package main
import (
"fmt"
"net/http"
"os"
"github.com/labstack/echo/v4"
"github.com/labstack/echo/v4/middleware"
)
var index = `
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Upstream Server</title>
<style>
h1, p {
font-weight: 300;
}
</style>
</head>
<body>
<p>
Hello from upstream server %s
</p>
</body>
</html>
`
func main() {
name := os.Args[1]
port := os.Args[2]
e := echo.New()
e.Use(middleware.Recover())
e.Use(middleware.Logger())
e.GET("/", func(c echo.Context) error {
return c.HTML(http.StatusOK, fmt.Sprintf(index, name))
})
e.Logger.Fatal(e.Start(port))
}
|
Start servers
cd upstreamgo run server.go server1 :8081go run server.go server2 :8082
Nginx
1) Install Nginx
原文：https://www.nginx.com/resources/wiki/start/topics/tutorials/install
Create a file /etc/nginx/sites-enabled/localhost with the following content:
> 原文：[https://github.com/labstack/echox/blob/master/cookbook/load-balancing/nginx.conf](https://github.com/labstack/echox/blob/master/cookbook/load-balancing/nginx.conf)
::: info
Change listen, server_name, access_log per your need.
:::
3) Restart Nginx
Browse to https://localhost:8080, and you should see a webpage being served from either “server 1” or “server 2”.
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| Hello from upstream server server1
|