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

发布：

<?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";

订阅：

<?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'])); $redis->zAdd($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);