An example of successful operation of redis cluster in PHP

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java can use jredis to operate redis cluster cluster

php There are two ways to operate redis cluster cluster:

1. Use phpredis extension, which is a c extension , higher performance, but phpredis2. High flexibility

I use predis, download address https://github.com/nrk/predis...

After downloading, rename it to predis,

server1：192.168.1.198

server2：192.168.1.199

predis.php

<?php require &#39;predis/autoload.php&#39;;//引入predis相关包
//redis实例
$servers = array(
    &#39;tcp://192.168.1.198:7000&#39;,
    &#39;tcp://192.168.1.198:7001&#39;,
    &#39;tcp://192.168.1.198:7002&#39;,
    &#39;tcp://192.168.1.199:7003&#39;,
    &#39;tcp://192.168.1.199:7004&#39;,
    &#39;tcp://192.168.1.199:7005&#39;,
);
 
$client = new Predis\Client($servers, array(&#39;cluster&#39; => '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 are 3 keys, which are allocated to 3 slots according to the algorithm. There are May be divided into 3 servers

First run predis.php to view the results:

Then log in to the redis client for cluster verification:

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>

You can see that the data is distributed on various servers. You can kill several of the redis instances according to ps -ef | grep redis, and then see Effect

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