PHP程序連接多個redis實例做緩存

1、redis配置：

$CONFIG_REDIS = array(
    array('host' => '192.168.19.29', 'port' => '6379', 'dbIndex' => 0, 'password'=>'3695a77369be021075b480048142a3c2'),
    array('host' => '192.168.19.30', 'port' => '6379', 'dbIndex' => 0, 'password'=>'3695a77369be021075b480048142a3c2')
);

 

2、Redis操作封裝類-->UtilRedis2

class UtilRedis2 {
 
 private static $_self = null;
 private $_servers = array();
 private $_conn = array();
 private $_conn_keys = array();
 
 const CONNECT_TIMEOUT = 5;
 
 public static function &getInstance() {
  // TODO Auto-generated method stub
  if (null == self::$_self)
  {
   self::$_self = new self();
  }
  return self::$_self;
 }
 
 private function __construct() {
  $this->_servers = $GLOBALS['CONFIG_REDIS'];
 }
 
 private function getConnection( $key ) {
  
  $serverCnt = count( $this->_servers );
  $hash = md5( $key );
  $serverIndex = $hash % $serverCnt;
  
  if ( !isset( $this->_conn[ $serverIndex ] ) ) {
   $this->_conn[ $serverIndex ] = new Redis();
   $this->_conn[ $serverIndex ]->pconnect(
          $this->_servers[$serverIndex]['host'],
          $this->_servers[$serverIndex]['port'],
          self::CONNECT_TIMEOUT
          );
   $this->_conn[ $serverIndex ]->auth($this->_servers[$serverIndex]['password']);
   $this->_conn[ $serverIndex ]->select( $this->_servers[$serverIndex]['dbIndex'] );
  }
  
  return $this->_conn[ $serverIndex ];
 }
 
 public function set( $key, $value, $expires = 0 ) {
  $conn = $this->getConnection( $key );
  
  if( $conn->set( $key, $value ) && $expires > 0 )
   return $conn->setTimeout($key, $expires);
  return true;
 }

......

 

3、使用redis操作封裝類

$redis = UtilRedis2::getInstance();

$redis->set("development", "wangwu");

<?php
//連接本地的 Redis 服務
$redis = new Redis();
$redis->connect('127.0.0.1', 6379);
//$redis->auth('123456');

$redis->select(0);

//EXPIRE key seconds------給key設置生存時間,當key過期時,它會被自動刪除
//PEXPIRE key milliseconds------以毫秒為單位設置key的生存時間
//EXPIREAT key timestamp------命令接受的時間參數是UNIX時間戳,key存活到一個unix時間戳時間
//PERSIST key------移除給定key的生存時間,轉換成一個不帶生存時間,永不過期的key
//SORT key [BY pattern] [LIMIT offset count] [GET pattern [GET pattern ...]] [ASC | DESC] [ALPHA] [STORE destination]------返回或保存給定列表、集合、有序集合key中經過排序的元素    

/****************String(字符串)相關操作***************/
//SET key value------將字符串值value關聯到key,會覆蓋
$a = $redis->set('email1','[e-mail]');
$redis->setTimeout('email1',30);
$seconds = $redis->ttl('email1');
$redis->select(1);
$h = $redis->get('email1');
print_r($h);

瀏覽器無內容輸出，因為set、get操作不在一個分區。