(PECL memcached >= 0.1.0)
Memcached::setByKey — Store an item on a specific server
Memcached::setByKey() is functionally equivalent to Memcached::set(), except that the free-form server_key can be used to map the key to a specific server. This is useful if you need to keep a bunch of related keys on a certain server.
成功时返回 TRUE, 或者在失败时返回 FALSE. 如需要则使用 Memcached::getResultCode()。
Example #1 Memcached::setByKey() example
<?php
$m = new Memcached();
$m->addServer('localhost', 11211);
/* keep IP blocks on a certain server */
$m->setByKey('api-cache', 'block-ip:169.254.253.252', 1);
$m->setByKey('api-cache', 'block-ip:169.127.127.202', 1);
?>