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java操作redis cluster集群可使用jredis

php要操作redis cluster集群有两种方式:

1、使用phpredis扩展,这是个c扩展,性能更高,但是phpredis2.x扩展不行,需升级phpredis到3.0,但这个方案参考资料很少

2、使用predis,纯php开发,使用了命名空间,需要php5.3+,灵活性高

我用的是predis,下载地址https://github.com/nrk/predis...

下载好后重命名为predis,

server1:192.168.1.198
server2:192.168.1.199

predis.php

<?php
require 'predis/autoload.php';//引入predis相关包
//redis实例
$servers = array(
    'tcp://192.168.1.198:7000',
    'tcp://192.168.1.198:7001',
    'tcp://192.168.1.198:7002',
    'tcp://192.168.1.199:7003',
    'tcp://192.168.1.199:7004',
    'tcp://192.168.1.199:7005',
);
 
$client = new Predis\Client($servers, array('cluster' => 'redis'));
 
$client->set("name1", "11");
$client->set("name2", "22");
$client->set("name3", "33");
 
$name1 = $client->get('name1');
$name2 = $client->get('name2');
$name3 = $client->get('name3');
var_dump($name1, $name2, $name3);die;

name1,name2,name3是3个key,按照算法分配到3个slot上,有可能分到3台服务器上
首先运行predis.php查看结果:

图片描述

然后登录到redis客户端进行集群验证:

server1

[root@localhost src]# redis-cli -c -p 7000
127.0.0.1:7000> get name1
-> Redirected to slot [12933] located at 192.168.1.199:7004
"11"
192.168.1.199:7004> get name2
-> Redirected to slot [742] located at 192.168.1.199:7003
"22"
192.168.1.199:7003> get name3
"33"
192.168.1.199:7003>

server2

[root@localhost src]# redis-cli -c -p 7003
127.0.0.1:7003> get name1
-> Redirected to slot [12933] located at 192.168.1.199:7004
"11"
192.168.1.199:7004> get name2
-> Redirected to slot [742] located at 192.168.1.199:7003
"22"
192.168.1.199:7003> get name3
"33"
192.168.1.199:7003>

可以看到数据分布在各个服务器上,可以根据ps -ef | grep redis,杀掉其中几个redis实例,再看效果


leo_su
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