Zend_Cache caches the entire site instead of a controller - zend-framework

Question

I wanted to cache controller ajax
<?php
class Default_Bootstrap extends Zend_Application_Module_Bootstrap
{
public function _initCache()
{
$frontendOptions = array(
'lifetime' => 10800,
'automatic_serialization' => true,
'debug_header' => false,
'regexps' => array('^/ajax/' => array('cache' => true),
'^/admin/' => array('cache' => false)),
'default_options' => array(
'cache_with_cookie_variables' => true,
'make_id_with_cookie_variables' => false));
$backendOptions = array('cache_dir' => APPLICATION_PATH.'/data/cache');
$cache = Zend_Cache::factory('Page','File',$frontendOptions,$backendOptions);
$cache->start();
}
}
But caching the entire site, including the admin module.

Answer 1

Use debug_header to true and check , the code below. As we set not to cache all pages at first, and only to cache the page starting with ajax , I hope all the ajax pages starts with the name ajax else change accordingly the regexp.
class Default_Bootstrap extends Zend_Application_Module_Bootstrap
{
public function _initCache()
{
$frontendOptions = array(
'lifetime' => 10800,
'automatic_serialization' => true,
'debug_header' => true,
'regexps' => array(
'$' => array('cache' => false),
'/ajax' => array('cache' => true),
),
'default_options' => array(
'cache_with_cookie_variables' => true,
'make_id_with_cookie_variables' => false
)
);
$backendOptions = array('cache_dir' => APPLICATION_PATH.'/data/cache');
$cache = Zend_Cache::factory('Page','File',$frontendOptions,$backendOptions);
$cache->start();
}
}