nginx实现proxy_cache
PURGE模块下载http://labs.frickle.com/files/ngx_cache_purge-1.2.tar.gztar zxvf ngx_cache_purge-1.2.tar.gz
其他模块安装详见 nginx安装与配置
在nginx目录下编译
#./configure --add-module=../ngx_cache_purge-1.2 --with-http_realip_module --with-http_gzip_static_module
--with-http_stub_status_module --with-http_ssl_module
--with-pcre=../pcre-8.10 --with-openssl=../openssl-1.0.0 --with-zlib=../zlib-1.2.5
#make
#make install
安装完成，进入/usr/local/nginx/conf
vi nginx.conf
usernobody nobody;
worker_processes 4;
error_loglogs/nginx_error.logcrit;
pid logs/nginx.pid;
#Specifies the value for maximum file descriptors that can be opened by this process.
worker_rlimit_nofile 65535;
events
{
use epoll;
worker_connections 65535;
}
http
{
include mime.types;
default_typeapplication/octet-stream;
#charsetutf-8;
server_names_hash_bucket_size 128;
client_header_buffer_size 32k;
large_client_header_buffers 4 32k;
client_max_body_size 300m;
sendfile on;
tcp_nopush on;
keepalive_timeout 60;
tcp_nodelay on;
client_body_buffer_size512k;
proxy_connect_timeout 5;
proxy_read_timeout 60;
proxy_send_timeout 5;
proxy_buffer_size 16k;
proxy_buffers 4 64k;
proxy_busy_buffers_size 128k;
proxy_temp_file_write_size 128k;
gzip on;
gzip_min_length1k;
gzip_buffers 4 16k;
gzip_http_version 1.1;
gzip_comp_level 2;
gzip_types text/plain application/x-javascript text/css application/xml;
gzip_vary on;
#注：proxy_temp_path和proxy_cache_path指定的路径必须在同一分区
proxy_temp_path /opt/data/proxy_temp_dir;
#设置Web缓存区名称为cache_one，内存缓存空间大小为200MB，1天没有被访问的内容自动清除，硬盘缓存空间大小为30GB。
proxy_cache_path/opt/data/proxy_cache_dirlevels=1:2 keys_zone=cache_one:200m inactive=1d max_size=5g;
upstream backend_server {
server 127.0.0.1:8080 weight=1 max_fails=2 fail_timeout=30s;
}
server
{
listen 80;
server_namewww.domain.com;
index index.html index.htm;
root/opt/data/www;
location /
{
#如果后端的服务器返回502、504、执行超时等错误，自动将请求转发到upstream负载均衡池中的另一台服务器，实现故障转移。
proxy_next_upstream http_502 http_504 error timeout invalid_header;
proxy_cache cache_one;
#对不同的HTTP状态码设置不同的缓存时间
proxy_cache_valid200 304 12h;
#以域名、URI、参数组合成Web缓存的Key值，Nginx根据Key值哈希，存储缓存内容到二级缓存目录内
proxy_cache_key $host$uri$is_args$args;
proxy_set_header Host$host;
proxy_set_header X-Forwarded-For$remote_addr;
proxy_pass http://backend_server;
expires 1d;
}
#用于清除缓存，假设一个URL为http://192.168.6.5/test.txt，通过访问http://192.168.6.5/purge/test.txt就可以清除该URL的缓存。
location ~ /purge(/.*)
{
#设置只允许指定的IP或IP段才可以清除URL缓存。
allow 127.0.0.1;
allow 192.168.6.0/24;
deny all;
proxy_cache_purge cache_one $host$1$is_args$args;
}
#扩展名以.jspa .jsp结尾的动态应用程序不缓存.
location ~ .*\.(jspa|jsp)?$
{
proxy_set_header Host$host;
proxy_set_header X-Forwarded-For$remote_addr;
proxy_pass http://backend_server;
}
access_logoff;
}
}
启动nginx
#/usr/local/nginx/sbin/nginx
如果已经启动，导入配置文件如下
#ps aux | grep nginx
root 22891 0.0 0.0 208976 1832 ? Ss 11:47 0:00 nginx: master process ./nginx
nobody 23388 0.0 0.3 221520 13344 ? S 13:47 0:00 nginx: worker process
nobody 23389 0.0 0.3 221880 13868 ? S 13:47 0:00 nginx: worker process
nobody 23390 0.0 0.3 221520 13344 ? S 13:47 0:00 nginx: worker process
nobody 23391 0.0 0.3 221520 13344 ? S 13:47 0:00 nginx: worker process
nobody 23392 0.0 0.0 208976 840 ? S 13:47 0:00 nginx: cache manager process
root 27404 0.1 0.4 109648 16936 ? S 15:24 0:00 gedit file:///usr/local/nginx/conf/nginx.conf
root 27414 0.0 0.0 3236 752 pts/1 S+ 15:29 0:00 grep nginx
#kill -hup 22891
访问 www.domain.com/index.html
在缓存文件夹会产生一些目录
清楚
www.domain.com/purge/index.html
显示Successful purge
页:
[1]