思路:
多进程 multiprocessing
输入输出 IO (DIO、AIO Asynchronous)
缓冲区 buffer 针对时间,分批,write-buffer
快速缓冲贮存区 cache 针对存储,分块,read-cache,大多数时候用cache代替buffer可以
通用网关接口 fastcgi(Common Gateway Interface)

1 multiprocessing
grep ^processor /proc/cpuinfo | wc -l
vim /etc/nginx/nginx.conf
vim /etc/nginx/conf.d/default.conf
worker_processes auto
systemctl restart nginx
ps -aux | grep nginx |grep -v grep

2 IO
事件处理模型
events {
use epoll;
}
windows中是kqueue

3 buffer
vim /etc/nginx/nginx.conf
client_body_buffer_size 512k;

4 cache
为1,000个元素定义了一个缓存,到期时间为60秒
http
{
open_file_cache max=1000 inactive=60s;
}

5 fastcgi
mkdir /home/www/cache
vim /etc/nginx/conf.d/default.conf
server外添加
fastcgi_cache_path /home/www/cache levels=1:2 keys_zone=MYAPP:100m inactive=60m;
fastcgi_cache_key "schemerequest_methodhostrequest_uri";
php中添加
fastcgi_cache MYAPP;
fastcgi_cache_valid 200 60m;
systemctl reload nginx

6 expire
可以在http段中或者server段中或者location段中加入

root   /home/www/wuye/public;
    location ~ .*\.(gif|jpg|jpeg|png|bmp|swf|ico)$
    {
        expires      1d;
    }

    location ~ .*\.(js|css)?$
    {
        expires      1h;
    }

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