哪一个更好的configuration/优化：明确限制keepalive_timeout或允许Nginx自行终止keepalive连接？
我看到了两个相互矛盾的build议，关于Nginx的keepalive_timeout指令。 他们如下：
# How long to allow each connection to stay idle; longer values are better # for each individual client, particularly for SSL, but means that worker # connections are tied up longer. (Default: 65) keepalive_timeout 20;
和
# You should remove keepalive_timeout from your formula. # Nginx closes keepalive connections when the # worker_connections limit is reached.
keepalive_timeout的Nginx 文档没有提及自动查杀，而且我只看到过这个build议，但是它让我感到很兴奋。
该服务器仅提供TLS安全连接，所有未encryption的连接立即重新路由到相同URL的https://版本。
当达到worker_connections限制时，Nginxclosureskeepalive连接。
确实如此。
ngx_drain_connections(); ngx_reusable_connection(c, 1);