nginx通过访问路径配置反向代理的最简配置

刚刚调试成功，留作参考：

events {
    worker_connections 10240;  
}  
http{
    server {
        listen 83;
        server_name localhost;


        location /v1/ {
            proxy_pass http://web1/;
        }
        location /v2/ {
            proxy_pass http://web2/;
        }
    }
    upstream web1{
        server localhost:81;
    }
    upstream web2{
        server localhost:82;
    }
}