Share the method of using memcache cache in php

Updated: June 3, 2015 12:20:46 Submission: hebedich

Generally speaking, if the concurrency is not large, it will have no effect on not using caching technology. However, if there is high concurrency, using caching technology is very important, which can greatly reduce the pressure on the database and server. Of course, there are many technologies to solve the problem of high concurrency. Here we just explain the convenience and convenience of using memcache from the perspective of caching.

The prerequisite for using memcache is to configure the memcahche environment first on the server side! After confirming that memcahce can be connected normally, it can be used in the program!

&lt;?php
/**
  * 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-&gt;mem = new Memcache();
  }
   
  /**
    * Link to memcahce service
    *
    * @access private
    * @param string $key keyword
    * @param string $value cache content
    * @return array
    */
  private function connect( $sid )
  {
    $file = $this-&gt;CacheFile();
    require $file;
    if(! isset($cache) )
    {
      throw new QException('The cache configuration file does not exist'.$file);
    }
    $server = $cache[$this-&gt;cacheId];
    $sid  = isset($sid) == 0 ? $this-&gt;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-&gt;mem-&gt;connect( $host , $port );
    } catch (Exception $e) {
      exit('memecache connection failed, error message:'. $e-&gt;getMessage());
    }
  }
   
  /**
    * Write to cache
    *
    * @access private
    * @param string $key keyword
    * @param string $value cache content
    * @return array
    */
  public function set( $key , $value , $sid , $expire = 0)
  {
    $data = $this-&gt;get($key , $sid); //If the key value already exists    if( $data ) 
    {
      return $this-&gt;mem-&gt;set( $key , $value ,MEMCACHE_COMPRESSED , $expire);
    } else {
      return $this-&gt;mem-&gt;add( $key , $value ,MEMCACHE_COMPRESSED , $expire);
    }
  }
   
  /**
    * Read cache
    *
    * @access private
    * @param string $key keyword
    * @param int $sid Select which memcache server to use
    * @return array
    */
  public function get( $key , $sid)
  {
    $this-&gt;connect( $sid );
    return $this-&gt;mem-&gt;get($key);
  }
   
  /**
    * Clean (delete) all stored elements
    *
    * @access private
    * @return array
    */
  public function flush()
  {
    $this-&gt;connect();
    return $this-&gt;mem-&gt;flush();
  }
  /**
    * Delete the cache
    *
    * @access private
    * @param string $key keyword
    * @param int $sid Select which memcache server to use
    * @return array
    */
  public function remove( $key , $sid)
  {
    $this-&gt;connect();
    return $this-&gt;mem-&gt;delete($key);
  }
   
  /**
    * Destructor
    * Finally close memcache
    */
  public function __destruct()
  {
    /*if(! $this-&gt;mem)
    {
      $this-&gt;mem-&gt;close();
    }*/
  }
}

The above is the entire content of this article, I hope you like it.

php
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Share the method of using memcache cache in php

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