/**
* Test if a cache is available for the given id and (if yes) return it (false else)
*
* Note : return value is always "string" (unserialization is done by the core not by the backend)
*
* @param string $id Cache id
* @param boolean $doNotTestCacheValidity If set to true, the cache validity won't be tested
* @return string|false cached datas
*/
public function load($id, $doNotTestCacheValidity = false)
{
$res = $this->_fastBackend->load($id, $doNotTestCacheValidity);
if ($res === false) {
$res = $this->_slowBackend->load($id, $doNotTestCacheValidity);
if ($res === false) {
// there is no cache at all for this id
return false;
}
}
$array = unserialize($res);
// maybe, we have to refresh the fast cache ?
if ($this->_options['auto_refresh_fast_cache']) {
if ($array['priority'] == 10) {
// no need to refresh the fast cache with priority = 10
return $array['data'];
}
$newFastLifetime = $this->_getFastLifetime($array['lifetime'], $array['priority'], time() - $array['expire']);
// we have the time to refresh the fast cache
$usage = $this->_getFastFillingPercentage('loading');
if ($array['priority'] > 0 && 10 * $array['priority'] >= $usage) {
// we can refresh the fast cache
$preparedData = $this->_prepareData($array['data'], $array['lifetime'], $array['priority']);
$this->_fastBackend->save($preparedData, $id, array(), $newFastLifetime);
}
}
return $array['data'];
}
/**
* Test if a cache is available for the given id and (if yes) return it (false else)
*
* Note : return value is always "string" (unserialization is done by the core not by the backend)
*
* @param string $id Cache id
* @param boolean $doNotTestCacheValidity If set to true, the cache validity won't be tested
* @return string|false cached datas
*/
public function load($id, $doNotTestCacheValidity = false)
{
$resultFast = $this->_fastBackend->load($id, $doNotTestCacheValidity);
if ($resultFast === false) {
$resultSlow = $this->_slowBackend->load($id, $doNotTestCacheValidity);
if ($resultSlow === false) {
// there is no cache at all for this id
return false;
}
}
$array = $resultFast !== false ? unserialize($resultFast) : unserialize($resultSlow);
//In case no cache entry was found in the FastCache and auto-filling is enabled, copy data to FastCache
if ($resultFast === false && $this->_options['auto_fill_fast_cache']) {
$preparedData = $this->_prepareData($array['data'], $array['lifetime'], $array['priority']);
$this->_fastBackend->save($preparedData, $id, array(), $array['lifetime']);
} elseif ($this->_options['auto_refresh_fast_cache']) {
if ($array['priority'] == 10) {
// no need to refresh the fast cache with priority = 10
return $array['data'];
}
$newFastLifetime = $this->_getFastLifetime($array['lifetime'], $array['priority'], time() - $array['expire']);
// we have the time to refresh the fast cache
$usage = $this->_getFastFillingPercentage('loading');
if ($array['priority'] > 0 && 10 * $array['priority'] >= $usage) {
// we can refresh the fast cache
$preparedData = $this->_prepareData($array['data'], $array['lifetime'], $array['priority']);
$this->_fastBackend->save($preparedData, $id, array(), $newFastLifetime);
}
}
return $array['data'];
}
