PHP memcached：getDelayed＆getMulti - 如何使用？(PHP memcached: getDelayed & getMulti - how to use?)

 我最近想了一下如何在PHP应用程序中使用getDelayed和getMulti ，以及它们的区别。 
 
 从阅读有关getDelayed的文档： 
 
 
 
 “该方法不会等待响应并立即返回。当您准备收集项目时，请调用Memcached :: fetch或Memcached :: fetchAll。” 
 
 
 因此，与getMulti不同，显然需要在键可用之前调用fetchAll。 但是，实际的memcached调用何时完成？ 在fetchAll或getDelayed运行时？ 
 
 以示例更新： 
 
    $this->memcached->set('int', 99);
    $this->memcached->set('string', 'a simple string');
    $this->memcached->set('array', array(11, 12));

    $this->memcached->getDelayed(array('int'));
    $this->memcached->getDelayed(array('string'));
    $this->memcached->getDelayed(array('array'));

    print("<pre>".print_r( $this->memcached->fetchAll() )."</pre>"); // returns the array element only.

I have thought a bit recently about how to use getDelayed and getMulti in a PHP application, and their difference.
 
From reading the documentation about getDelayed:
 
 
 
"The method does not wait for response and returns right away. When you are ready to collect the items, call either Memcached::fetch or Memcached::fetchAll."
 
 
So obviously there's a need to call fetchAll before having the keys available, unlike getMulti. But when is the actual memcached call being done? At fetchAll or when getDelayed is run?
 
Updated with example:
 
    $this->memcached->set('int', 99);
    $this->memcached->set('string', 'a simple string');
    $this->memcached->set('array', array(11, 12));

    $this->memcached->getDelayed(array('int'));
    $this->memcached->getDelayed(array('string'));
    $this->memcached->getDelayed(array('array'));

    print("<pre>".print_r( $this->memcached->fetchAll() )."</pre>"); // returns the array element only.

原文：https://stackoverflow.com/questions/2929054