优化Nginx负载均衡的网络性能

Http {
    keepalive_timeout 65;
    keepalive_requests 100000;
    proxy_http_version 1.1;
    proxy_set_header Connection "";
}

http {
    proxy_cache_path /path/to/cache levels=1:2 keys_zone=my_cache:10m max_size=10g inactive=60m;
    proxy_temp_path /path/to/temp;
    proxy_cache_key $scheme$proxy_host$request_uri;
 
    server {
        location / {
            proxy_cache my_cache;
            proxy_cache_valid 200 302 10m;
            proxy_cache_valid 404 1m;
            proxy_cache_use_stale error timeout http_502;
            proxy_pass http://backend;
        }
    }
}

http {
    upstream backend {
        least_conn;
        server backend1.example.com;
        server backend2.example.com;
        server backend3.example.com;
    }
 
    server {
        location / {
            proxy_pass http://backend;
        }
    }
}

net.core.somaxconn = 65535
net.ipv4.ip_local_port_range = 1024 65535
net.ipv4.tcp_fin_timeout = 15
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_max_syn_backlog = 65536