nginx缓存设置
http://linux008.blog.51cto.com/2837805/547236
目的:缓存nginx服务器的静态文件。如css,js,htm,html,jpg,gif,png,flv,swf,这些文件都不是经常更新。便于缓存以减轻服务器的压力。
实现:nginx proxy_cache可以将用户的请缓存到本地一个目录,当下一个请求时可以直接调取缓存文件,就不用去后端服务器去取文件了。
配置:打开配置文件/usr/local/nginx/conf/nginx.conf
user www www;
worker_processes 2;
error_log /var/log/nginx_error.log crit;
worker_rlimit_nofile 65535;
events
{
use epoll;
worker_connections 65535;
}
http
{
include mime.types;
default_type application/octet-stream;
server_names_hash_bucket_size 128;
client_header_buffer_size 32k;
large_client_header_buffers 4 32k;
client_max_body_size 8m;
sendfile on;
tcp_nopush on;
keepalive_timeout 0;
tcp_nodelay on;
fastcgi_connect_timeout 300;
fastcgi_send_timeout 300;
fastcgi_read_timeout 300;
fastcgi_buffer_size 64k;
fastcgi_buffers 4 64k;
fastcgi_busy_buffers_size 128k;
fastcgi_temp_file_write_size 128k;
##cache##
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;
proxy_temp_path /home/temp_dir;
proxy_cache_path /home/cache levels=1:2 keys_zone=cache_one:200m inactive=1d max_size=30g;
##end##
gzip on;
gzip_min_length 1k;
gzip_buffers 4 8k;
gzip_http_version 1.1;
gzip_types text/plain application/x-javascript text/css application/xml;
gzip_disable "MSIE [1-6]\.";
log_format access '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" $http_x_forwarded_for';
upstream appserver {
server 192.168.1.251;
}
server {
listen 80 default;
server_name www.gangpao.com;
location ~ .*\.(gif|jpg|png|htm|html|css|js|flv|ico|swf)(.*) {
proxy_pass http://appserver;
proxy_redirect off;
proxy_set_header Host $host;
proxy_cache cache_one;
proxy_cache_valid 200 302 1h;
proxy_cache_valid 301 1d;
proxy_cache_valid any 1m;
expires 30d;
}
location ~ .*\.(php)(.*){
proxy_pass http://appserver;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
access_log /usr/local/nginx/logs/www.gangpao.com.log;
}
}
worker_processes 2;
error_log /var/log/nginx_error.log crit;
worker_rlimit_nofile 65535;
events
{
use epoll;
worker_connections 65535;
}
http
{
include mime.types;
default_type application/octet-stream;
server_names_hash_bucket_size 128;
client_header_buffer_size 32k;
large_client_header_buffers 4 32k;
client_max_body_size 8m;
sendfile on;
tcp_nopush on;
keepalive_timeout 0;
tcp_nodelay on;
fastcgi_connect_timeout 300;
fastcgi_send_timeout 300;
fastcgi_read_timeout 300;
fastcgi_buffer_size 64k;
fastcgi_buffers 4 64k;
fastcgi_busy_buffers_size 128k;
fastcgi_temp_file_write_size 128k;
##cache##
proxy_connect_timeout 5;
proxy_read_timeout 60;
proxy_send_timeout 5;
proxy_buffer_size 16k;
proxy_buffers 4 64k;
proxy_busy_buffers_size 128k;
proxy_temp_file_write_size 128k;
proxy_temp_path /home/temp_dir;
proxy_cache_path /home/cache levels=1:2 keys_zone=cache_one:200m inactive=1d max_size=30g;
##end##
gzip on;
gzip_min_length 1k;
gzip_buffers 4 8k;
gzip_http_version 1.1;
gzip_types text/plain application/x-javascript text/css application/xml;
gzip_disable "MSIE [1-6]\.";
log_format access '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" $http_x_forwarded_for';
upstream appserver {
server 192.168.1.251;
}
server {
listen 80 default;
server_name www.gangpao.com;
location ~ .*\.(gif|jpg|png|htm|html|css|js|flv|ico|swf)(.*) {
proxy_pass http://appserver;
proxy_redirect off;
proxy_set_header Host $host;
proxy_cache cache_one;
proxy_cache_valid 200 302 1h;
proxy_cache_valid 301 1d;
proxy_cache_valid any 1m;
expires 30d;
}
location ~ .*\.(php)(.*){
proxy_pass http://appserver;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
access_log /usr/local/nginx/logs/www.gangpao.com.log;
}
}
红色部分是配置缓存的参数。
说明:
1、http段设置。
proxy_temp_path /home/temp_dir;设置临时目录
proxy_cache_path /home/cache levels=1:2 keys_zone=cache_one:200m
inactive=1d
max_size=30g;设置缓存目录为二级目录,共享内存区大小,非活动时间,最大容量,注意临时目录要跟缓存目录在同一个分区。
2、server段设置
请求静态文件设置。
proxy_cache cache_one;设置缓存共享内存区块,也就是keys_zone名称。
proxy_cache_valid 200 302 1h;设置http状态码为200,302缓存时间为1小时。
expires 30d;设置失期时间,为30天
请求动态文件设置。
proxy_pass http://appserver;不进行缓存,直接转到后端服务器。
测试:当客户端发起http请求时在服务器上会产一个缓存文件如
/home/cache/0/b9/8bd841b1c44ee5b91457eb561e44eb90
OK