srcache_nginx redis 构建缓存系统应用一例

更新：2022-05-23 13:46:23编辑：Story归类：nginx人气：189

srcache_nginx模块相关参数介绍，可以参见《memc_nginx+srcache_nginx+memcached构建透明的动态页面缓存》。 redis是一种高效的key-value存储。

下面举一例应用，看配置：

upstream <a href="http://www.ttlsa.com/redis/" title="redis"target="_blank">redis</a> {
	server 127.0.0.1:6380;
	keepalive 512;
}

server {
	listen       80 backlog=1024 default;
	server_name  www.ttlsa.com;
	index index.html index.htm index.<a href="http://www.ttlsa.com/php/" title="php"target="_blank">php</a>;
	root  /data/wwwroot/www.ttlsa.com/webroot;

	location / {
		set $flag 0;
		if ($uri ~ /thumb/[0-9]+_160.jpg$){
				set $flag "${flag}1";
		}
		if ($arg_unitid = 42012){
				set $flag "${flag}1";
		}
		if (!-e $request_filename) {
				rewrite ^/(.*)$ /index.php?kohana_uri=$1 last;
		}
	}
	location ~ .*\.php?$ {
		srcache_store_private on;
		srcache_methods GET;
		srcache_response_cache_control off;
		if ($flag = "011"){
			set $key $request_uri;
			set_escape_uri $escaped_key $key;
			srcache_fetch GET /redis $key;
			srcache_default_expire 172800;
			srcache_store PUT /redis2 key=$escaped_key&exptime=$srcache_expire;

			add_header X-flag $flag;
			add_header X-Cached-From $srcache_fetch_status;
			add_header X-Cached-Store $srcache_store_status;
			add_header X-Key $key;
			set_md5 $md5key $key;
			add_header X-md5-key $md5key;
			add_header X-Query_String $query_string;
			add_header X-expire $srcache_expire;
		}	
		include fastcgi_params;
		fastcgi_pass  127.0.0.1:10080;
		fastcgi_index index.php;
		fastcgi_connect_timeout 300;
		fastcgi_send_timeout 300;
		fastcgi_read_timeout 300;
		fastcgi_buffer_size 128k;
		fastcgi_buffers 4 256k;
		fastcgi_busy_buffers_size 256k;
		fastcgi_temp_file_write_size 256k;
		fastcgi_intercept_errors on;
		fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;
	}

	location = /redis {
		internal;
		set_md5 $redis_key $args;
		redis_pass redis;
	}

	location = /redis2 {
		internal;

		set_unescape_uri $exptime $arg_exptime;
		set_unescape_uri $key $arg_key;
		set_md5 $key;

		redis2_query set $key $echo_request_body;
		redis2_query expire $key $exptime;
		redis2_pass redis;
	}
}

upstream redis {

server 127.0.0.1 : 6380 ;

keepalive 512 ;

}

server {

listen 80 backlog = 1024 default ;

server_name www . ttlsa . com ;

index index . html index . htm index . php ;

root / data / wwwroot / www . ttlsa . com / webroot ;

location / {

set $ flag 0 ;

if ( $ uri ~ / thumb / [ 0 - 9 ] + _160 . jpg $ ) {

set $ flag "${flag}1" ;

}

if ( $ arg_unitid = 42012 ) {

set $ flag "${flag}1" ;

}

if ( ! - e $ request_filename ) {

rewrite ^ / ( . * ) $ / index . php ? kohana_uri = $ 1 last ;

}

location ~ . * \ . php ? $ {

srcache_store_private on ;

srcache_methods GET ;

srcache_response_cache_control off ;

if ( $ flag = "011" ) {

set $ key $ request_uri ;

set_escape _uri $ escaped _key $ key ;

srcache_fetch GET / redis $ key ;

srcache_default _expire 172800 ;

srcache_store PUT / redis2 key = $ escaped_key & exptime = $ srcache_expire ;

add _header X - flag $ flag ;

add _header X - Cached - From $ srcache_fetch_status ;

add _header X - Cached - Store $ srcache_store_status ;

add _header X - Key $ key ;

set _md5 $ md5key $ key ;

add _header X - md5 - key $ md5key ;

add _header X - Query _String $ query_string ;

add _header X - expire $ srcache_expire ;

}

include fastcgi_params ;

fastcgi _pass 127.0.0.1 : 10080 ;

fastcgi_index index . php ;

fastcgi_connect _timeout 300 ;

fastcgi_send _timeout 300 ;

fastcgi_read _timeout 300 ;

fastcgi_buffer _size 128k ;

fastcgi _buffers 4 256k ;

fastcgi_busy_buffers _size 256k ;

fastcgi_temp_file_write _size 256k ;

fastcgi_intercept_errors on ;

fastcgi_param SCRIPT _FILENAME $ document_root $ fastcgi_script_name ;

}

location = / redis {

internal ;

set _md5 $ redis _key $ args ;

redis_pass redis ;

}

location = / redis2 {

internal ;

set_unescape _uri $ exptime $ arg_exptime ;

set_unescape _uri $ key $ arg_key ;

set _md5 $ key ;

redis2_query set $ key $ echo_request_body ;

redis2_query expire $ key $ exptime ;

redis2_pass redis ;

}

测试：

memcached

redis实例下：

可以记录下日志来测试加缓存前后的耗时。日志格式如下：

log_format srcache_log '$remote_addr - $remote_user [$time_local] "$request" '
                                '"$status" $body_bytes_sent $request_time $bytes_sent $request_length '
                                '[$upstream_response_time] [$srcache_fetch_status] [$srcache_store_status] [$srcache_expire]';