Redis 几种应用场景

Redis 几种应用场景

字符串缓存

<?php
$redis = new Redis();
$redis->connect('127.0.0.1',6379);
$strKey = 'test';
$strKey1 ='test1';
//set
$arrCache = [
'name'=>'mysteryH',
'sex'=>'男',
'age'=>22
];
$redis->set($strKey,json_encode($arrCache));
$redis->expire($strKey,300);//设置过期时间
$json_data = $redis->get($strKey);
$data = json_decode($json_data);
print_r($data->name);

//hset
$arrWeb =[
'google'=>[
'google.com',
'google.com.hk'
]
];
$redis->hSet($strKey1,'google',json_encode($arrWeb['google']));
$json_data = $redis->hGet($strKey1,'google');
$data = json_decode($json_data);
print_r($data);

简单消息队列

<?php
$redis = new Redis();
$redis->connect('127.0.0.1',6379);
$strKey = 'queue';

//进队
$redis->rPush($strKey,json_encode(['id'=>1,'name'=>'name1']));
$redis->rPush($strKey,json_encode(['id'=>2,'name'=>'name2']));
$redis->rPush($strKey,json_encode(['id'=>3,'name'=>'name3']));
$redis->rPush($strKey,json_encode(['id'=>4,'name'=>'name4']));
echo "---进队成功---<br>";

//查看队列
$strCount = $redis->lRange($strKey,0,-1);
echo "当前数据：";
print_r($strCount);

//出队
$info = $redis->lPop($strKey);
echo "<br>---".$info."---出队成功<br>";

//查看队列
$strCount = $redis->lRange($strKey,0,-1);
echo "当前数据：";
print_r($strCount);

发布订阅

<?php
ini_set('default_socket_timeout',-1);
$redis = new Redis();
$redis->connect('127.0.0.1',6379);
$strChannel = 'channel';

$redis->publish($strChannel,"来自{$strChannel}的推送");
echo "-------{$strChannel}-------消息推送成功";

<?php
ini_set('default_socket_timeout',-1);
$redis = new Redis();
$redis->connect('127.0.0.1',6379);
$strChannel = 'channel';

//订阅
echo "等待-------{$strChannel}-------消息推送";
$redis->subscribe([$strChannel],'callback');

function callback($instance, $channelName, $message){
echo $message;
}

排行榜

<?php
$redis = new Redis();
$redis->connect('127.0.0.1',6379);
$strKey = 'rank';

$redis->zAdd($strKey,'50',json_encode(['name'=>'name1']));
$redis->zAdd($strKey,'100',json_encode(['name'=>'name2']));

4000
$redis->zAdd($strKey,'20',json_encode(['name'=>'name3']));
$redis->zAdd($strKey,'60',json_encode(['name'=>'name4']));
$redis->zAdd($strKey,'40',json_encode(['name'=>'name5']));
$redis->zAdd($strKey,'80',json_encode(['name'=>'name6']));

$data1 = $redis->zRevRange($strKey,0,-1,true);
echo "从大到小排序：<br>";
print_r($data1);

$data2 = $redis->zRange($strKey,0,-1,true);
echo "从小到大排序：<br>";
print_r($data2);