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| Тема: Кэширование с помощью eaccelerator Пт Сен 10, 2010 3:12 am | |
| Не секрет, что популярный фреймворк Zend Framework не поддерживает кеширование через eAccelerator. Я решил исправить это и написал backend eAccelerator для ZF. Напомню, что eAccelerator, помимо автоматического кеширования, поддерживает пользовательское. Как его использовать, можно найти в официальном мануале. - Код:
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< ?php /** * @author Aco <aco dot best at gmail dot com> | WebITeam */ /** * @see Zend_Cache_Backend_Interface */ require_once 'Zend/Cache/Backend/ExtendedInterface.php'; /** * @see Zend_Cache_Backend */ require_once 'Zend/Cache/Backend.php'; /** * @package Zend_Cache * @subpackage Zend_Cache_Backend */ class Zend_Cache_Backend_Eaccelerator extends Zend_Cache_Backend implements Zend_Cache_Backend_ExtendedInterface { /** * Log message */ const TAGS_UNSUPPORTED_BY_CLEAN_OF_EA_BACKEND = 'Zend_Cache_Backend_Eaccelerator::clean() : tags are unsupported by the eaccelerator backend'; const TAGS_UNSUPPORTED_BY_SAVE_OF_EA_BACKEND = 'Zend_Cache_Backend_Eaccelerator::save() : tags are unsupported by the eaccelerator backend'; protected $_options = array(); public function __construct(array $options = array()) { if (!extension_loaded('eaccelerator')) { Zend_Cache::throwException('The eaccelerator extension must be loaded for using this backend !'); } $funcs = get_extension_funcs('eaccelerator'); if(!in_array("eaccelerator_get",$funcs) || !in_array("eaccelerator_put",$funcs)) { Zend_Cache::throwException('The eaccelerator extension must be loaded completely for using this backend !'); } parent::__construct($options); } /** * Save some string datas into a cache record * * Note : $data is always "string" (serialization is done by the * core not by the backend) * * @param string $data datas to cache * @param string $id cache id * @param array $tags array of strings, the cache record will be tagged by each string entry * @param int $specificLifetime if != false, set a specific lifetime for this cache record (null => infinite lifetime) * @return boolean true if no problem */ public function save($data, $id, $tags = array(), $specificLifetime = false) { $lifetime = $this->getLifetime($specificLifetime); if (count($tags) > 0) { $this->_log(self::TAGS_UNSUPPORTED_BY_SAVE_OF_EA_BACKEND); } return eaccelerator_put($id, $data, $lifetime); } /** * Test if a cache is available for the given id and (if yes) return it (false else) * * WARNING $doNotTestCacheValidity=true is unsupported by the Eaccelerator backend * * @param string $id cache id * @param boolean $doNotTestCacheValidity if set to true, the cache validity won't be tested * @return string cached datas (or false) */ public function load($id, $doNotTestCacheValidity = false) { return eaccelerator_get($id); } public function test($id) { $tmp = eaccelerator_get($id); if ($tmp) { return $tmp; } return false; } /** * Remove a cache record * * @param string $id cache id * @return boolean true if no problem */ public function remove($id) { return eaccelerator_rm($id); } /** * Clean some cache records * * Available modes are : * 'all' (default) => remove all cache entries ($tags is not used) * 'old' => unsupported * 'matchingTag' => unsupported * 'notMatchingTag' => unsupported * 'matchingAnyTag' => unsupported * * @param string $mode clean mode * @param array $tags array of tags * @throws Zend_Cache_Exception * @return boolean true if no problem */ public function clean($mode = Zend_Cache::CLEANING_MODE_ALL, $tags = array()) { switch ($mode) { case Zend_Cache::CLEANING_MODE_ALL: return eaccelerator_clear() && eaccelerator_clean(); break; case Zend_Cache::CLEANING_MODE_OLD: return eaccelerator_gc(); break; case Zend_Cache::CLEANING_MODE_MATCHING_TAG: case Zend_Cache::CLEANING_MODE_NOT_MATCHING_TAG: case Zend_Cache::CLEANING_MODE_MATCHING_ANY_TAG: $this->_log(self::TAGS_UNSUPPORTED_BY_CLEAN_OF_EA_BACKEND); break; default: Zend_Cache::throwException('Invalid mode for clean() method'); break; } } /** * Return true if the automatic cleaning is available for the backend * * DEPRECATED : use getCapabilities() instead * * @deprecated * @return boolean */ public function isAutomaticCleaningAvailable() { return false; } /** * Return the filling percentage of the backend storage * * @throws Zend_Cache_Exception * @return int integer between 0 and 100 */ public function getFillingPercentage() { $eaInfo = eaccelerator_info(); if ($eaInfo["memorySize"] == 0) { Zend_Cache::throwException("can't get eaccelerator memory size"); } if ($eaInfo["memoryAllocated"] > $eaInfo["memorySize"]) { return 100; } return ((int) (100. * ($eaInfo["memoryAllocated"] / $eaInfo["memorySize"]))); } /** * Return an array of stored tags * * @return array array of stored tags (string) */ public function getTags() { $this->_log(self::TAGS_UNSUPPORTED_BY_SAVE_OF_EA_BACKEND); return array(); } /** * Return an array of stored cache ids which match given tags * * In case of multiple tags, a logical AND is made between tags * * @param array $tags array of tags * @return array array of matching cache ids (string) */ public function getIdsMatchingTags($tags = array()) { $this->_log(self::TAGS_UNSUPPORTED_BY_SAVE_OF_EA_BACKEND); return array(); } /** * Return an array of stored cache ids which don't match given tags * * In case of multiple tags, a logical OR is made between tags * * @param array $tags array of tags * @return array array of not matching cache ids (string) */ public function getIdsNotMatchingTags($tags = array()) { $this->_log(self::TAGS_UNSUPPORTED_BY_SAVE_OF_EA_BACKEND); return array(); } /** * Return an array of stored cache ids which match any given tags * * In case of multiple tags, a logical AND is made between tags * * @param array $tags array of tags * @return array array of any matching cache ids (string) */ public function getIdsMatchingAnyTags($tags = array()) { $this->_log(self::TAGS_UNSUPPORTED_BY_SAVE_OF_EA_BACKEND); return array(); } /** * Return an array of stored cache ids * * @return array array of stored cache ids (string) */ public function getIds() { return eaccelerator_list_keys(); } /** * Return an array of metadatas for the given cache id * * The array must include these keys : * - expire : the expire timestamp * - tags : a string array of tags * - mtime : timestamp of last modification time * * @param string $id cache id * @return array array of metadatas (false if the cache id is not found) */ public function getMetadatas($id) { return false; } /** * Give (if possible) an extra lifetime to the given cache id * * @param string $id cache id * @param int $extraLifetime * @return boolean true if ok */ public function touch($id, $extraLifetime) { $tmp = eaccelerator_get($id); if ($tmp !== null) { eaccelerator_put($id, $tmp, $extraLifetime); return true; } return false; } /** * Return an associative array of capabilities (booleans) of the backend * * The array must include these keys : * - automatic_cleaning (is automating cleaning necessary) * - tags (are tags supported) * - expired_read (is it possible to read expired cache records * (for doNotTestCacheValidity option for example)) * - priority does the backend deal with priority when saving * - infinite_lifetime (is infinite lifetime can work with this backend) * - get_list (is it possible to get the list of cache ids and the complete list of tags) * * @return array associative of with capabilities */ public function getCapabilities() { return array( 'automatic_cleaning' => false, 'tags' => false, 'expired_read' => false, 'priority' => false, 'infinite_lifetime' => false, 'get_list' => true ); } } ?> | |
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