解析Linux下Varnish缓存的配置优化(2)

<?php  
function purge($ip, $url)  
{  
    $errstr = '';  
    $errno = '';  
    $fp = fsockopen ($ip, 80, $errno, $errstr, 2);  
    if (!$fp)  
    {  
         return false;  
    }  
    else 
    {  
        $out = "PURGE $url HTTP/1.1\r\n";  
        $out .= "Host:blog.s135.com\r\n";  
        $out .= "Connection: close\r\n\r\n";  
        fputs ($fp, $out);  
        $out = fgets($fp , 4096);  
        fclose ($fp);  
        return true;  
    }  
}  

purge("192.168.0.4", "/index.php");  
?>

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
配置开机自动启动Varnish
vim /etc/rc.d/rc.local
在末行写入以下内容：
ulimit -SHn 8192
/usr/local/varnish-2.1.3/sbin/varnishd -u www -g www -f /usr/local/varnish-2.1.3/etc/varnish/varnish.conf -a 0.0.0.0:80 -s file,/data/varnish_cache/varnish_cache.data,100M -w 1024,8192,10 -t 3600 -T 127.0.0.1:3500
/usr/local/varnish-2.1.3/bin/varnishncsa -w /data/logs/varnish.log &
查看Varnish服务器连接数与命中率：
/usr/local/varnish-2.1.3/bin/varnishstat
以上为varnish的状态，
1675         0.00         0.06 Client requests received   为服务端接收的客户端请求次数
179         0.00         0.01 Cache hits    为命中缓存，从缓存中取得数据返回给客户端的次数，即命中率
11         0.00         0.00 Cache misses  为跳过pass缓存，从后端服务应用中取得数据返回给用户的次数
用help看看可以使用哪些Varnish命令：
/usr/local/varnish-2.1.3/bin/varnishadm -T 127.0.0.1:3500 help

您可能感兴趣的文章: