nginx相关优化

系统配置

# increase socket max connection
sysctl -w net.core.somaxconn=4000 # for docker application this must be set both in host and container and give container proper priviledge


# increase ulimit
echo "* soft niofile 65535" >> /etc/security/limits.conf
echo "* hard niofile 65535" >> /etc/security/limits.conf

Nginx 相关配置

nginx.conf

worker_processes 12; # based on processor core
events {
    worker_connections 20000; # increase worker connections
    # multi_accept on;
}
http {
    ...
    # lower timeout
    client_body_timeout 12;
    client_header_timeout 12;
    keepalive_timeout 15;
    send_timeout 10;
    # turn off access log
    access_log off;
    ...
}

site configuration

upstream backend {
    server xxx;
    server xxx-another-ip-if-it-has; # multiple address will increase the ability of making conenction
    keepalive 512; # keep backend connection alive
}

server {
    location / {
        ...
        # use http 1.1
        proxy_set_header   Connection "";
        proxy_http_version 1.1;
        ...
    }
}