缓存扩展

<?php
function memcache_connector($key)
{
    $hosts=array(
        'a',
        'b',
        'c'

    );
    $host_index=hexdec(substr(md5($key),0,5))%3;
    $host=$hosts[$host_index];
    return memcache_connect($host,11211);
}

$memcache=memcache_connector('aritcle_012312.html');
?>