注意：如果redis集羣配置了密碼，需要把php環境升級到php7.3，不然無法使用
redis5集羣搭建（集羣加密）看這裏：https://blog.csdn.net/u011477914/article/details/89384206
RedisClustert類用法參考：https://github.com/phpredis/phpredis/blob/develop/cluster.markdown#readme
修改CodeIgniter\system\libraries\Cache\drivers\Cache_redis.php文件
1、使用redis集羣調用方法：
protected $_cluster_config= Array('10.1.1.198:6000', '10.1.1.198:6001', '10.1.1.198:6002', '10.1.1.198:6003', '10.1.1.198:6004', '10.1.1.198:6005')；
//無密碼訪問
$this->redis = new RedisCluster(NULL,$_cluster_config);
//密碼訪問
$this->redis = new RedisCluster(NULL, $this->_cluster_config, '1.5', '1.5', false, "a123456");
2、修改部分方法：【原先的$this->redis->delete($key) 更新爲 $this->redis->del($key)】
public function delete($key, $type = 'string')
{
if($this->redisShow) {
switch ($type){
case 'string':
//刪除單個
$key = $this->prefix . $key;
break;
case 'array':
//刪除指定數組
$keyArr = [];
foreach ($key as $value){
$keyArr[] = $this->prefix . $value;
}
$key = $keyArr;
break;
case 'keys':
//模糊刪除
$key = $this->prefix . $key;
$key = $this->redis->keys($key.'*');
break;
}
return ($this->redis->del($key) === 1);
}
return false;
}
3、$this->redis->info() 修改爲： $this->redis->info(uniqid())
public function cache_info()
{
if($this->redisShow) {
return $this->redis->info(uniqid());
}
return false;
｝
其他功能和單機功能一樣，可以直接使用。
4、Cache_redis.php完整源碼：
<?php
/**
* CodeIgniter
*
* An open source application development framework for PHP
*
* This content is released under the MIT License (MIT)
*
* Copyright (c) 2014 - 2017, British Columbia Institute of Technology
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* @package CodeIgniter
* @author EllisLab Dev Team
* @copyright Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
* @copyright Copyright (c) 2014 - 2017, British Columbia Institute of Technology (http://bcit.ca/)
* @license http://opensource.org/licenses/MIT MIT License
* @link https://codeigniter.com
* @since Version 3.0.0
* @filesource
*/
defined('BASEPATH') OR exit('No direct script access allowed');
/**
* CodeIgniter Redis Caching Class
*
* @package CodeIgniter
* @subpackage Libraries
* @category Core
* @author Anton Lindqvist <[email protected]>
* @link
*/
class CI_Cache_redis extends CI_Driver
{
//CI實例
protected $CI;
/**
* Prefixed to all cache names.
*
* @var string
*/
protected $_prefix = 'DH_';
/**
* Default config
*
* @static
* @var array
*/
protected static $_default_config = array(
'socket_type' => 'tcp',
'host' => '127.0.0.12',
'password' => 'a123456',
'port' => 6379,
'timeout' => 0
);
/**
* Cluster config
*
* @static
* @var array
*/
protected $_cluster_config = array('10.1.1.198:6000', '10.1.1.198:6001', '10.1.1.198:6002', '10.1.1.198:6003', '10.1.1.198:6004', '10.1.1.198:6005');
/**
* Redis connection
*
* @var Redis
*/
protected $redis;
/**
* Redis connection
* 判斷redis服務是否正常啓用
* @var Redis
*/
protected $_redisShow = 1;
/**
* An internal cache for storing keys of serialized values.
*
* @var array
*/
protected $_serialized = array();
// ------------------------------------------------------------------------
/**
* Class constructor
*
* Setup Redis
*
* Loads Redis config file if present. Will halt execution
* if a Redis connection can't be established.
*
* @return void
* @see Redis::connect()
*/
public function __construct()
{
if ( ! $this->is_supported())
{
$this->_redisShow = '0';
}
try {
$this->redis = new RedisCluster(NULL, $this->_cluster_config, '1.5','1.5',false,"a123456");
}catch (RedisClusterException $e) {
$config = self::$_default_config;
$this->redis = new Redis();
try {
if ($config['socket_type'] === 'unix') {
$success = $this->redis->connect($config['socket']);
} else // tcp socket
{
$success = $this->redis->connect($config['host'], $config['port'], $config['timeout']);
}
if (!$success) {
$this->_redisShow = '0';
}
if (isset($config['password']) && !$this->redis->auth($config['password'])) {
$this->_redisShow = '0';
}
} catch (RedisException $e) {
$this->_redisShow = '0';
}
}
}
/**
* Get cache
*
* @param string $key Cache ID
* @return mixed
*/
public function get($key)
{
if($this->_redisShow) {
$key = $this->_prefix . $key;
$data = $this->redis->hMGet($key, ['__ci_type', '__ci_value']);
if ( ! isset($data['__ci_type'], $data['__ci_value']) || $data['__ci_value'] === false)
{
return false;
}
switch ($data['__ci_type'])
{
case 'array':
case 'object':
return unserialize($data['__ci_value']);
case 'boolean':
case 'integer':
case 'double': // Yes, 'double' is returned and NOT 'float'
case 'string':
case 'NULL':
return settype($data['__ci_value'], $data['__ci_type']) ? $data['__ci_value'] : false;
case 'resource':
default:
return false;
}
}
return false;
}
// ------------------------------------------------------------------------
/**
* Save cache
*
* @param string $key Cache ID
* @param mixed $value Data to save
* @param int $ttl Time to live in seconds
* @param bool $raw Whether to store the raw value (unused)
* @return bool TRUE on success, FALSE on failure
*/
public function save($key, $value, $ttl = 60)
{
if($this->_redisShow) {
$key = $this->_prefix . $key;
switch ($data_type = gettype($value))
{
case 'array':
case 'object':
$value = serialize($value);
break;
case 'boolean':
case 'integer':
case 'double': // Yes, 'double' is returned and NOT 'float'
case 'string':
case 'NULL':
break;
case 'resource':
default:
return false;
}
if ( ! $this->redis->hMSet($key, ['__ci_type' => $data_type, '__ci_value' => $value]))
{
return false;
}
elseif ($ttl)
{
if($ttl == '3600') $ttl = $ttl*12;
$this->redis->expireAt($key, time() + $ttl);
}
return true;
}
return false;
}
// ------------------------------------------------------------------------
/**
* Delete from cache
*
* @param string|array $key Cache key
* @param string $type string刪除單個|array刪除指定數組|keys模糊刪除
* @return bool
*/
public function delete($key, $type = 'string')
{
if($this->_redisShow) {
switch ($type){
case 'string':
//刪除單個
$key = $this->_prefix . $key;
break;
case 'array':
//刪除指定數組
$keyArr = [];
foreach ($key as $value){
$keyArr[] = $this->_prefix . $value;
}
$key = $keyArr;
break;
case 'keys':
//模糊刪除
$key = $this->_prefix . $key;
$key = $this->redis->keys($key.'*');
break;
}
return ($this->redis->del($key) === 1);
}
return false;
}
// ------------------------------------------------------------------------
/**
* Increment a raw value
*
* @param string $key Cache ID
* @param int $offset Step/value to add
* @return mixed New value on success or FALSE on failure
*/
public function increment($key, $offset = 1)
{
if($this->_redisShow) {
$key = $this->_prefix . $key;
return $this->redis->hIncrBy($key, 'data', $offset);
// return $this->_redis->incr($id, $offset);
}
return false;
}
// ------------------------------------------------------------------------
/**
* Decrement a raw value
*
* @param string $key Cache ID
* @param int $offset Step/value to reduce by
* @return mixed New value on success or FALSE on failure
*/
public function decrement($key, $offset = 1)
{
if($this->_redisShow) {
$key = $this->_prefix . $key;
// return $this->_redis->decr($id, $offset);
return $this->redis->hIncrBy($key, 'data', -$offset);
}
return false;
}
// ------------------------------------------------------------------------
/**
* Clean cache
*
* @return bool
* @see Redis::flushDB()
*/
public function clean()
{
//$this->initialize(self::$_master_config);
if($this->_redisShow) {
return $this->redis->flushDB();
}
return false;
}
// ------------------------------------------------------------------------
/**
* Get cache driver info
*
* @param string $type Not supported in Redis.
* Only included in order to offer a
* consistent cache API.
* @return array|string
* @see Redis::info()
*/
public function cache_info()
{
if($this->_redisShow) {
return $this->redis->info(uniqid());
}
return false;
}
// ------------------------------------------------------------------------
/**
* Get cache metadata
*
* @param string $key Cache key
* @return array|FALSE|string
*/
public function get_metadata($key)
{
if($this->_redisShow) {
$key = $this->_prefix . $key;
$value = $this->get($key);
if ($value !== FALSE)
{
$time = time();
return [
'expire' => $time + $this->redis->ttl($key),
'mtime' => $time,
'data' => $value
];
}
return FALSE;
}
return false;
}
// ------------------------------------------------------------------------
/**
* Check if Redis driver is supported
*
* @return bool
*/
public function is_supported()
{
if($this->_redisShow) {
return extension_loaded('redis');
}
return false;
}
// ------------------------------------------------------------------------
/**
* Class destructor
*
* Closes the connection to Redis if present.
*
* @return void
*/
public function __destruct()
{
if($this->_redisShow) {
if ($this->redis) {
$this->redis->close();
}
}
}
}