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POHow to inject caching into Zend_Db
 

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  1. POHow to inject caching into Zend_Db
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    <p>I'm looking at ways to reduce the number of queries that are being performed on my MySQL server. </p> <p>The application and database servers are on separate machines, so it seems caching previous query results on the application server is not a bad option to pursue. Obviously there are other strategies like reducing the number of queries and optimizing the query statements, however I don't think I should discount query caching as an option.</p> <p>I was initially thinking that I could easily turn on some form of query caching in the <code>Zend_Db</code> object, however the closest I've come to seeing something crosscut is the <code>Zend_Db_Profiler</code>.</p> <p>One approach I was considering was to create a proxy for my <code>Zend_Db_Adapter</code> object. Something to the effect of:</p> <pre><code>/** * Initialize the database. * * @return void */ protected function _initDb() { // Instantiate a connection to the database $config = Zend_Registry::get('config'); $db = new MyProject_Db_Proxy ( Zend_Db::factory($config-&gt;resources-&gt;db-&gt;adapter, $config-&gt;resources-&gt;db-&gt;params) ); // Store the database object in the registry Zend_Registry::set('db', $db); Zend_Db_Table::setDefaultAdapter('db'); } </code></pre> <p>I've looked through the various <code>Zend_Db</code> interfaces and classes and it looks possible that I could inject caching into the <code>Zend_Db_Adapter_Abstract::query()</code> method via the proxy. Something to the effect of:</p> <pre><code>public MyProject_Db_Proxy() { private $_adapter = null; ... public function query($sql, $bind = array()) { // Generate the cache key by joining and hashing $sql and $bind // Check to see if key is in cache, return if found // Execute query $stmt = this-&gt;_adapter-&gt;query($sql, $bind); // Cache result } ... } </code></pre> <p>My question is: <strong>Is there a better/easier way to inject caching into Zend_Db?</strong></p>
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    1. COEnable your databases query cache.
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    2. CONote that I'm using Zend Framework 1.11.11 with the PDO MySQL adapter.
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    3. CO@hakre Are you suggesting that the database query cache will get rid of the network round trip? Can you point me to resources for this?
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