Zend Cache doesn't read from its cache

Question

I wrote function to cache every page in my website and I put this function in Bootstrap file.

Cache files are created on every request, even for the same page.

Did I miss something?

It is also not working even if I remove regexps array from configuration.

Zend 1.12.3

protected function _initCache() {
    $cachePath = APPLICATION_PATH
        . DIRECTORY_SEPARATOR
        . '..'
        . DIRECTORY_SEPARATOR
        . '_cache';

    $fO = array(
        'lifetime' => 7200,
        'automatic_serialization' => true,
        'regexps' => array(
            '^/admin/' => array(
                'cache' => false
            ),
            '^/account/' => array(
                'cache' => false
            ),
            '^/cart/' => array(
                'cache' => false
            ),
        ),
        'content_type_memorization' => true,
        'default_options' => array(
            'cache' => true,
            'cache_with_get_variables' => true,
            'cache_with_post_variables' => true,
            'cache_with_session_variables' => true,
            'cache_with_cookie_variables' => true,
        ),
    );

    $bO = array(
        'cache_dir' => $cachePath
    );

    $cache = Zend_Cache::factory('Page', 'File', $fO, $bO);
    $cache->start();
}

Answer 1

From zend docs:

Note: When using Zend_Cache, pay attention to the important cache identifier (passed to save() and start()). It must be unique for every resource you cache, otherwise unrelated cache records may wipe each other or, even worse, be displayed in place of the other.

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