好的,问题来了:
$frontendOptions = array(
  'lifetime' => 7200,
  'debug_header' => true, // for debugging, but it doesn't work...
  'regexps' => array(
         // Cache the static pages
         '^/pages/' => array('cache' => true),
     )
  );
$backendOptions = $config->cache->backOptions->toArray();
// getting a Zend_Cache_Frontend_Page object
require_once 'Zend/Cache.php';
$cache = Zend_Cache::factory('Page',
  $config->cache->backend,
  $frontendOptions,
  $backendOptions);
$cache->start();
这根本没有任何作用。页面加载时间完全相同,并且指示的文件夹$backendOptions为空。我究竟做错了什么?
顺便说一句:$config->cache->backend读取"file".