nginx的反向代理和负载均衡的区别是什么

来源：互联网发布：洛阳知乎编辑：程序博客网时间：2024/06/10 11:24

最近在研究nginx的负载均衡和反向代理，先看下这两个简单的配置吧！

负载均衡

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worker_processes 1;
events {
   worker_connections 1024;
}
http{
    upstream lxx {//默认是80端口
        server 192.168.0.62 weight=2;
        server 192.168.0.161 weight=3;
    }
    server {
        listen 80;
        location / {
            proxy_pass http://lxx;
        }
    }
}

反向代理

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worker_processes 1;
events {
   worker_connections 1024;
}
http{
    upstream lxx {//默认是80端口
        server 192.168.0.62 weight=2;
        server 192.168.0.161 weight=3;
    }
    server {
        listen 80;
        location / {
            proxy_pass http://lxx;
             
 
            #Proxy Settings
            proxy_redirect     off;
            proxy_set_header   Host             $host;
            proxy_set_header   X-Real-IP        $remote_addr;
            proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;
            proxy_next_upstream error timeout invalid_header http_500 http_502 http_503 http_504;
            proxy_max_temp_file_size 0;
            proxy_connect_timeout      90;
            proxy_send_timeout         90;
            proxy_read_timeout         90;
            proxy_buffer_size          4k;
            proxy_buffers              4 32k;
            proxy_busy_buffers_size    64k;
            proxy_temp_file_write_size 64k;
        }
    }
}

从配置上来看，它只是多了Proxy Settings下面的一些设置参数！但从实际的表现结果来看，感觉区别并不是很大，负载均衡已经可以把用户的请求按照相关算法和规则发送到web集群的某台机器，而反向代理也是实现了如此的功能，它们的具体的区别在哪里？求普及！

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