Nginx 中的 keepalive

Nginx 中的 keepalive 分为服务端侧和客户端侧。

服务端侧

upstream http_backend {
  server 127.0.0.1:5000;
  keepalive 32;
}

server {
  ...

  location / {
    proxy_pass http://http_backend;
    proxy_http_version 1.1;
    proxy_set_header Connection "";
    ...
  }
}

客户端侧

http {
  keepalive_timeout 65s;
}

参考资料

• http://nginx.org/en/docs/http/ngx_http_upstream_module.html#keepalive
• http://nginx.org/en/docs/http/ngx_http_core_module.html#keepalive_timeout