public function setup()
{
$settings = $this->routeInstance->getSetup();
//TODO 调用对应的驱动配置
$memHostsArr = explode(',', rtrim($settings['memHosts'], ','));
$curInst = new Memcache();
foreach ($memHostsArr as $memHost) {
$curMemHostInfo = explode(':', $memHost);
$curInst->addServer($curMemHostInfo[0], isset($curMemHostInfo[1]) ? $curMemHostInfo[1] : 11211);
}
//added by Zhou Hui(zhou_hui@live.com) on July 12nd, 2010
//memcached的数据必须压缩，大于4k的以0.2的比率进行压缩
$curInst->setcompressthreshold(4096, 0.2);
//add end
$this->instance = $curInst;
$this->isAvailable = $this->instance ? TRUE : FALSE;
}
