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POConfiguring Memcache + CakePHP, "Cache not configured properly" error
 

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    <p>I'm setting up cacheing for a CakePHP application and having a really hard time getting it to talk to Memcache.</p> <p>I've written the caching code while testing against the File based caching engine, and all the logic is solid. When I watch debug traffic, caches hit, miss, and expire properly. I wanted to switch over to Memcache because the Filesytem based cache doesn't really offer any performance improvement, but I can't seem to get it to work at all.</p> <p>As soon as I change the Caching engine in Cache::config to Memcache, I get the following error:</p> <pre><code>Warning (512): Cache not configured properly. Please check Cache::config(); in APP/config/core.php [CORE/cake/libs/configure.php, line 663] </code></pre> <p>This happens with a simple configuration call, like:</p> <pre><code>Cache::config('default', array( 'engine' =&gt; 'Memcache' )); </code></pre> <p>Or a more complicated one, like the default one suggested in core.php:</p> <pre><code>Cache::config('default', array( 'engine' =&gt; 'Memcache', //[required] 'duration'=&gt; 3600, //[optional] 'probability'=&gt; 100, //[optional] 'prefix' =&gt; Inflector::slug(APP_DIR) . '_', //[optional] prefix every cache file with this string 'servers' =&gt; array( '127.0.0.1:11211' // localhost, default port 11211 ), //[optional] 'compress' =&gt; false, // [optional] compress data in Memcache (slower, but uses less memory) )); </code></pre> <p>Cache.check is set to true, eg <code>Configure::write('Cache.check', true);</code> and Cache.disable is not set. Again, all the caching logic works great as long as I'm using <code>'engine' =&gt; 'File'</code>. </p> <p>I get the same error whether memcached is running or not. This error seems to encompass a ton of different problems - extensive searching has revealed a huge variety of potential solutions to problems with this error message. I've double checked that my tmp directories exist (per <a href="http://ryan.ifupdown.com/2009/08/05/warning-512-cache-not-configured-properly-please-check-cacheconfig-in-appconfigcore-php-corecakelibsconfigure-php-line-663/" rel="nofollow noreferrer">http://ryan.ifupdown.com/2009/08/05/warning-512-cache-not-configured-properly-please-check-cacheconfig-in-appconfigcore-php-corecakelibsconfigure-php-line-663/</a>), I'm running on Ubuntu, so there are no pathing issues (which have been a problem in the past, per <a href="https://trac.cakephp.org/ticket/4433" rel="nofollow noreferrer">https://trac.cakephp.org/ticket/4433</a> and <a href="http://cakephp.1045679.n5.nabble.com/cake-1-2-problem-with-cache-td1302563.html" rel="nofollow noreferrer">http://cakephp.1045679.n5.nabble.com/cake-1-2-problem-with-cache-td1302563.html</a>). I am running a relatively old version of Cake (1.2.5), but I tried upgrading and had the same error message (along with a million other upgrade-related errors that I don't really have time to hunt down.)</p> <p>Is there any way to get more detailed information out of Cake about what's actually going wrong? I get the feeling that this error is just a catch-all error for anything that goes wrong in the cache class initialization, and there are tons of potential problems. Changing the debug level up to 3 doesn't reveal anything more. If I could get more info I might be able to do something, but I'm totally flying blind. I'm a mostly-novice Cake user, so any general guidance about best practices for dealing with bizarre Cake bugs would be much appreciated!</p>
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