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optimized performance of LifetimeFileCache by having FileCache retain last fetch #19

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optimized performance of LifetimeFileCache by having FileCache retain last fetch #19

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25 changes: 23 additions & 2 deletions Cache/FileCache.php
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Original file line number Diff line number Diff line change
Expand Up @@ -32,6 +32,13 @@ class FileCache extends AbstractCache
/** @var string $separator */
private $_separator = '--s--';

/** @var string last id fetched */
private $_lastId = null;

/** @var string last data fetched */
private $_lastData = null;


/**
* {@inheritdoc}
*/
Expand Down Expand Up @@ -104,7 +111,14 @@ public function getIds()
*/
protected function _doFetch($id)
{
return unserialize(file_get_contents($this->getFileName($id)));
//LifetimeFileCache will perform a fetch during contains(), so by
//retaining that data we can greatly speedup the subsequent fetch()
if ($id != $this->_lastId) {
$this->_lastId=$id;
$this->_lastData=unserialize(file_get_contents($this->getFileName($id)));
}

return $this->_lastData;
}

/**
Expand All @@ -120,19 +134,26 @@ protected function _doContains($id)
*/
protected function _doSave($id, $data, $lifeTime = 0)
{
$this->_lastId=$id;
$this->_lastData=$data;
return (bool) file_put_contents($this->getFileName($id), serialize($data));
}

/**
* {@inheritdoc}
*/
protected function _doDelete($id)
{
{
$file = $this->getFileName($id);

if (file_exists($file)) {
return unlink($file);
}
if ($id == $this->_lastId) {
$this->_lastId=null;
$this->_lastData=null;
}


return true;
}
Expand Down