Using Memache in PHP as the operation class of the process lock _ PHP Tutorial

Use Memache in PHP as the operation class of the process lock. Using Memache in PHP as the operation class of the process lock this article mainly introduces how to use Memache in PHP as the operation class of the process lock, this article provides the class implementation code and application example, and shares the Operation class using Memache as the process lock in PHP.

This article mainly introduces the use of Memache in PHP as the operation class of the process lock. This article provides the class implementation code and application example. if you need it, refer

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// Use Memache as the process lock Class lock_processlock { // Key prefix Protected $ sLockKeyPre; // Retry interval Protected $ iLockRetryInterval; // Number of retries Protected $ iLockRetryCount; // Lock expiration time Protected $ iLockCacheTimeout; // Callback function after lock expiration Protected $ onLockTimeoutFunc; // Memache instance Protected $ oMemcache; // Number of retries after memcache fails to be stored Protected $ iMemcacheRetryCount; Public function _ construct ($ onLockTimeoutFunc = NULL ){ $ ALockConfig = get_config ('', 'lock '); $ This-> sLockKeyPre = self: LOCK_KEY_PRE; $ This-> iLockRetryInterval = self: LOCK_RETRY_INTERVAL; $ This-> iLockRetryCount = self: LOCK_RETRY_COUNT; $ This-> iLockCacheTimeout = self: LOCK_CACHE_TIMEOUT; $ This-> iMemcacheRetryCount = self: LOCK_CACHE_TIMEOUT; If (! $ OnLockTimeoutFunc ){ // If the lock fails, the callback function is called. If no callback function is available, use $ OnLockTimeoutFunc = 'onlocktimeout '; } $ This-> onLockTimeoutFunc = $ onLockTimeoutFunc; } /** Connect to the memcache server */ Public function connect (){ If (! Isset ($ this-> oMemcache )){ $ This-> oMemcache = new Memcache (); $ This-> oMemcache-> connect ('2017. 0.0.1 ', 127 ); } Return $ this-> oMemcache; } /* Add a key to MeMcache */ Public addMemcache ($ sKey, $ sValue, $ iTimeout ){ For ($ I = 0; $ I <$ this-> iMemcacheRetryCount ){ $ BRes = $ this-> oMemcache-> add ($ sKey, $ sValue, $ iTimeout ); If ($ bRes ){ Return true; } // If the lock fails, apply the new lock after sleep. Usleep ($ this-> iLockRetryInterval * 1000 ); } Return false; } /* Lock */ Public function lock ($ sLockID ){ $ OMemcache = $ this-> connect (); $ SKey = $ this-> sLockKeyPre. $ sLockID; // Try multiple times if the lock fails. For ($ I = 0; $ I <$ this-> iLockRetryCount; $ I ++ ){ // Set the value here. If ($ this-> addMemcache ($ sKey, '1', $ this-> iLockCacheTimeout )){ Return true; } // If the lock fails, apply the new lock after sleep. Usleep ($ this-> iLockRetryInterval * 1000 ); } // If the lock fails, call the callback function, which is the operation to be processed after the lock fails. If (is_callable ($ this-> onLockTimeoutFunc )){ // Call a function Call_user_func ($ this-> onLockTimeoutFunc ); } } /* Unlock operation */ Public function unlock ($ sLockID ){ $ OMemcache = $ this-> connect (); $ SKey = $ this-> sLockKeyPre. $ sLockID; // Delete the key Return $ this-> oMemcache-> delete ($ sKey ); } /** If the lock fails, perform the following operations: */ Public function onLockTimeout (){ Echo ("lock timeout "); } } // Application instance $ OLock = new lock_processlock (); $ LockResource = "test "; // Lock $ OLock-> lock ($ lockResource ); // Unlock

This article describes how to use Memache as the operation class of the process lock in PHP. This article provides the class implementation code and application example directly...