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 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： 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]';

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