PHP operation Memcache Caching method sharing _php Tutorial

PHP operation Memcache Caching method sharing

In general, if the concurrency is not a small situation, so that the use of caching technology does not have any impact, but if high concurrency, the use of caching technology is very important, can be very good to reduce the pressure on the database and server, of course, to solve the high concurrency of the technology there are many, The convenience and convenience of using memcache is explained in terms of caching.

The premise of using memcache is that you need to configure the Memcahche environment on the server first! Confirm that the MEMCAHCE can be connected properly after the program is ready to use!

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/** * Memcache Cache operation * @author HXM * @version 1.0 * @since 2015.05.04 */ Class Mcache extends Object implements Cacheface { Private $mem = null; Mem Object Private $sId = 1; Servier Service ID /** * Initialize Memcache * * @return Object */ Public Function __construct () { if (!class_exists (' Memcache ')) { throw new Qexception (' PHP extension does not exist:memcache '); } $this->mem = new Memcache (); } /** * Link MEMCAHCE Service * * @access Private * @param string $key keyword * @param string $value cache content * @return Array */ Private function Connect ($SID) { $file = $this->cachefile (); Require $file; if (! isset ($cache)) { throw new Qexception (' cache config file does not exist '. $file); } $server = $cache [$this->cacheid]; $sid = Isset ($sid) = = 0? $this->sid: $sid;//memcache service Selection if (! $server [$sid]) { throw new Qexception (' The cache server configuration file for the current operation does not exist '); } $host = $server [$sid] [' Host ']; $port = $server [$sid] [' Port ']; try { $this->mem->connect ($host, $port); } catch (Exception $e) { Exit (' Memecache connection failed, error message: '. $e->getmessage ()); } } /** * Write Cache * * @access Private * @param string $key keyword * @param string $value cache content * @return Array */ Public function set ($key, $value, $sid, $expire = 0) { $data = $this->get ($key, $sid); If a key value already exists if ($data) { return $this->mem->set ($key, $value, memcache_compressed, $expire); } else { return $this->mem->add ($key, $value, memcache_compressed, $expire); } } /** * Read Cache * * @access Private * @param string $key keyword * @param int $sid Select the first few memcache servers * @return Array */ Public function Get ($key, $sid) { $this->connect ($SID); return $this->mem->get ($key); } /** * Clean (delete) all the elements that have been stored * * @access Private * @return Array */ Public Function Flush () { $this->connect (); return $this->mem->flush (); } /** * Delete Cache * * @access Private * @param string $key keyword * @param int $sid Select the first few memcache servers * @return Array */ Public function Remove ($key, $sid) { $this->connect (); return $this->mem->delete ($key); } /** * destructor * Last Close Memcache */ Public Function __destruct () { /*if (! $this->mem) { $this->mem->close (); }*/ } }

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