CakePHP Cache Config always reverts to File (from Memcache or APC)

Question

Firstly both Memcache and APC are installed successfully using PECL (and are verified as working) on my Macbook Pro dev server running PHP 5.3.15

I've just baked a test Cake 2.2.2 app. In Config/core.php I have the following:

/**
 * Pick the caching engine to use.  If APC is enabled use it.
 * If running via cli - apc is disabled by default. ensure it's available and enabled in this case
 *
 */
$engine = 'File';
if (extension_loaded('apc') && function_exists('apc_dec') && (php_sapi_name() !== 'cli' || ini_get('apc.enable_cli'))) {
    $engine = 'Apc';
}
if (extension_loaded('memcache') && php_sapi_name() !== 'cli') {
    $engine = 'Memcache';
}

// In development mode, caches should expire quickly.
$duration = '+999 days';
if (Configure::read('debug') >= 1) {
    $duration = '+10 seconds';
}

// Prefix each application on the same server with a different string, to avoid Memcache and APC conflicts.
$prefix = 'mcmyapp_';

/**
 * Configure the cache used for general framework caching.  Path information,
 * object listings, and translation cache files are stored with this configuration.
 */
Cache::config('_cake_core_', array(
    'engine' => $engine,
    'prefix' => $prefix . 'cake_core_',
    'path' => CACHE . 'persistent' . DS,
    'serialize' => ($engine === 'File'),
    'duration' => $duration
));

/**
 * Configure the cache for model and datasource caches.  This cache configuration
 * is used to store schema descriptions, and table listings in connections.
 */
Cache::config('_cake_model_', array(
    'engine' => $engine,
    'prefix' => $prefix . 'cake_model_',
    'path' => CACHE . 'models' . DS,
    'serialize' => ($engine === 'File'),
    'duration' => $duration
));


Cache::config('default', array(
    'engine' => $engine,
    'serialize' => ($engine === 'File'),
    'duration'=>$duration,
    'prefix'=>$prefix,
));

debug(Cache::settings());

The output of the above final debug() is:

array(
    'prefix' => '*****',
    'engine' => 'Memcache',
    'serialize' => false,
    'duration' => (int) 10,
    'servers' => array(
        (int) 0 => '127.0.0.1'
    ),
    'compress' => false,
    'persistent' => true,
    'probability' => (int) 100,
    'groups' => array()
)

So in core.php it appears that Cake wants to use Memcache for its caching engine.

However, when I visit localhost/myapp/pages/home in my browser, CakePHP's default, freshly-baked welcome page greets me, informing me that The FileEngine is being used for core caching

Anywhere else in my app (other than in core.php) if I debug(Cache::settings()), I get the following:

array(
    'prefix' => '*****',
    'engine' => 'File',
    'serialize' => false,
    'duration' => (int) 10,
    'servers' => array(
        (int) 0 => '127.0.0.1'
    ),
    'compress' => false,
    'persistent' => true,
    'probability' => (int) 100,
    'groups' => array()
)

Basically, CakePHP appears to revert to File for caching, ignoring my configuration in core.php to use Memcache... unless I've done something wrong here??!

I've tried this with Configure::write('debug', 0) and Configure::write('debug', 1).

I should mention that with the above, both APC and Memcache extensions are enabled in php.ini.

Any help would be gratefully received, thanks in advance.

B3ro B3ro · Accepted Answer · 2012-12-20T22:46:25

Memcached should be on some port, default one is 11211 (check)... So your config tries to connect to Memcached, fails and reverts back to default (File) cache...

Try:

Cache::config('default', array(
    'engine' => 'Memcache',
    'duration'=> 3600, 
    'probability'=> 100, 
    'servers' => array('127.0.0.1:11211') <<<<==
));

CakePHP Cache Config always reverts to File (from Memcache or APC)

1 Answers