Memcached（+） · PHP筆記

[?memcached](http://www.memcached.org/)是一個高性能分布式的內存對象緩存系統，通常被用于降低數據庫加載壓力以提高動態web應用的響應速度。此擴展使用了libmemcached庫提供的api與memcached服務端進行交互。它同樣提供了一個session處理器（memcached）。它同時提供了一個[session](https://www.php.net/manual/zh/ref.session.php)處理器（*memcached*）。關于libmemcached的更多信息可以在[??http://libmemcached.org/libMemcached.html](http://libmemcached.org/libMemcached.html)查看 [https://pecl.php.net/package/memcached](https://pecl.php.net/package/memcached). >[danger]memcached不支持windows;memcache支持windows但功能少點 * [預定義常量](https://www.php.net/manual/zh/memcached.constants.php) * [超時時間](https://www.php.net/manual/zh/memcached.expiration.php) * [回調](https://www.php.net/manual/zh/memcached.callbacks.php) * [結果回調](https://www.php.net/manual/zh/memcached.callbacks.result.php) * [通讀緩存回調](https://www.php.net/manual/zh/memcached.callbacks.read-through.php) * [Sessions支持](https://www.php.net/manual/zh/memcached.sessions.php) * [Memcached](https://www.php.net/manual/zh/class.memcached.php)— Memcached類 * [Memcached::add](https://www.php.net/manual/zh/memcached.add.php)— 向一個新的key下面增加一個元素 * [Memcached::addByKey](https://www.php.net/manual/zh/memcached.addbykey.php)— 在指定服務器上的一個新的key下增加一個元素 * [Memcached::addServer](https://www.php.net/manual/zh/memcached.addserver.php)— 向服務器池中增加一個服務器 * [Memcached::addServers](https://www.php.net/manual/zh/memcached.addservers.php)— 向服務器池中增加多臺服務器 * [Memcached::append](https://www.php.net/manual/zh/memcached.append.php)— 向已存在元素后追加數據 * [Memcached::appendByKey](https://www.php.net/manual/zh/memcached.appendbykey.php)— 向指定服務器上已存在元素后追加數據 * [Memcached::cas](https://www.php.net/manual/zh/memcached.cas.php)— 比較并交換值 * [Memcached::casByKey](https://www.php.net/manual/zh/memcached.casbykey.php)— 在指定服務器上比較并交換值 * [Memcached::\_\_construct](https://www.php.net/manual/zh/memcached.construct.php)— 創建一個Memcached實例 * [Memcached::decrement](https://www.php.net/manual/zh/memcached.decrement.php)— 減小數值元素的值 * [Memcached::decrementByKey](https://www.php.net/manual/zh/memcached.decrementbykey.php)— 遞減數字項的值，存儲在特定的服務器上 * [Memcached::delete](https://www.php.net/manual/zh/memcached.delete.php)— 刪除一個元素 * [Memcached::deleteByKey](https://www.php.net/manual/zh/memcached.deletebykey.php)— 從指定的服務器刪除一個元素 * [Memcached::deleteMulti](https://www.php.net/manual/zh/memcached.deletemulti.php)— 刪除多個項目 * [Memcached::deleteMultiByKey](https://www.php.net/manual/zh/memcached.deletemultibykey.php)— 從特定的服務器刪除多個項目 * [Memcached::fetch](https://www.php.net/manual/zh/memcached.fetch.php)— 抓取下一個結果 * [Memcached::fetchAll](https://www.php.net/manual/zh/memcached.fetchall.php)— 抓取所有剩余的結果 * [Memcached::flush](https://www.php.net/manual/zh/memcached.flush.php)— 作廢緩存中的所有元素 * [Memcached::get](https://www.php.net/manual/zh/memcached.get.php)— 檢索一個元素 * [Memcached::getAllKeys](https://www.php.net/manual/zh/memcached.getallkeys.php)— 獲取存儲在所有服務器上的密鑰 * [Memcached::getByKey](https://www.php.net/manual/zh/memcached.getbykey.php)— 從特定的服務器檢索元素 * [Memcached::getDelayed](https://www.php.net/manual/zh/memcached.getdelayed.php)— 請求多個元素 * [Memcached::getDelayedByKey](https://www.php.net/manual/zh/memcached.getdelayedbykey.php)— 從指定的服務器上請求多個元素 * [Memcached::getMulti](https://www.php.net/manual/zh/memcached.getmulti.php)— 檢索多個元素 * [Memcached::getMultiByKey](https://www.php.net/manual/zh/memcached.getmultibykey.php)— 從特定服務器檢索多個元素 * [Memcached::getOption](https://www.php.net/manual/zh/memcached.getoption.php)— 獲取Memcached的選項值 * [Memcached::getResultCode](https://www.php.net/manual/zh/memcached.getresultcode.php)— 返回最后一次操作的結果代碼 * [Memcached::getResultMessage](https://www.php.net/manual/zh/memcached.getresultmessage.php)— 返回最后一次操作的結果描述消息 * [Memcached::getServerByKey](https://www.php.net/manual/zh/memcached.getserverbykey.php)— 獲取一個key所映射的服務器信息 * [Memcached::getServerList](https://www.php.net/manual/zh/memcached.getserverlist.php)— 獲取服務器池中的服務器列表 * [Memcached::getStats](https://www.php.net/manual/zh/memcached.getstats.php)— 獲取服務器池的統計信息 * [Memcached::getVersion](https://www.php.net/manual/zh/memcached.getversion.php)— 獲取服務器池中所有服務器的版本信息 * [Memcached::increment](https://www.php.net/manual/zh/memcached.increment.php)— 增加數值元素的值 * [Memcached::incrementByKey](https://www.php.net/manual/zh/memcached.incrementbykey.php)— 遞增數字項的值，存儲在特定的服務器上 * [Memcached::isPersistent](https://www.php.net/manual/zh/memcached.ispersistent.php)— 檢查是否使用了到memcache的persitent連接 * [Memcached::isPristine](https://www.php.net/manual/zh/memcached.ispristine.php)— 檢查實例是否最近創建 * [Memcached::prepend](https://www.php.net/manual/zh/memcached.prepend.php)— 向一個已存在的元素前面追加數據 * [Memcached::prependByKey](https://www.php.net/manual/zh/memcached.prependbykey.php)— 將數據預先添加到特定服務器上的現有項 * [Memcached::quit](https://www.php.net/manual/zh/memcached.quit.php)— 關閉所有打開的鏈接。 * [Memcached::replace](https://www.php.net/manual/zh/memcached.replace.php)— 替換已存在key下的元素 * [Memcached::replaceByKey](https://www.php.net/manual/zh/memcached.replacebykey.php)— 替換特定服務器上現有密鑰下的項 * [Memcached::resetServerList](https://www.php.net/manual/zh/memcached.resetserverlist.php)— 從服務器列表中清除所有服務器 * [Memcached::set](https://www.php.net/manual/zh/memcached.set.php)— 存儲一個元素 * [Memcached::setByKey](https://www.php.net/manual/zh/memcached.setbykey.php)— 將項目存儲在特定的服務器上 * [Memcached::setMulti](https://www.php.net/manual/zh/memcached.setmulti.php)— 存儲多個元素 * [Memcached::setMultiByKey](https://www.php.net/manual/zh/memcached.setmultibykey.php)— 在特定的服務器上存儲多個項目 * [Memcached::setOption](https://www.php.net/manual/zh/memcached.setoption.php)— 設置一個memcached選項 * [Memcached::setOptions](https://www.php.net/manual/zh/memcached.setoptions.php)—設置Memcached選項 * [Memcached::setSaslAuthData](https://www.php.net/manual/zh/memcached.setsaslauthdata.php)—設置用于身份驗證的憑據 * [Memcached::touch](https://www.php.net/manual/zh/memcached.touch.php)— 為一個項目設置一個新的過期時間 * [Memcached::touchByKey](https://www.php.net/manual/zh/memcached.touchbykey.php)— 對特定服務器上的項設置新的過期