EasySwoole 基于Redis组件实现延迟队列
介绍
在用户要支付订单的时候,如果超过30分钟未支付,会把订单关掉。当然我们可以做一个定时任务,每个一段时间来扫描未支付的订单,如果该订单超过支付时间就关闭,但是在数据量小的时候并没有什么大的问题,但是数据量一大轮训数据库的方式就会变得特别耗资源。当面对千万级、上亿级数据量时,本身写入的IO就比较高,导致长时间查询或者根本就查不出来,更别说分库分表以后了。
使用延迟队列解决的痛点无非是
- 实现了数据延迟
- 数据摊开(仔细去理解)
知识点
案例
生成订单id —-> 扔到延迟队列 —-> 延迟队列消费进程不停获取30分钟前的订单满足条件的订单 —-> 处理订单
直接上代码
EasySwooleEvent.php 注册redis连接池、注册延迟队列消费进程
<?php
namespace EasySwoole\EasySwoole;
use App\Process\Consumer;
use EasySwoole\EasySwoole\Swoole\EventRegister;
use EasySwoole\EasySwoole\AbstractInterface\Event;
use EasySwoole\Http\Request;
use EasySwoole\Http\Response;
use EasySwoole\Pool\Manager;
use EasySwoole\Redis\Config\RedisConfig;
use App\RedisPool\RedisPool;
use EasySwoole\Pool\Config;
class EasySwooleEvent implements Event
{
public static function initialize()
{
// TODO: Implement initialize() method.
date_default_timezone_set('Asia/Shanghai');
}
public static function mainServerCreate(EventRegister $register)
{
//TODO:: 注册redis连接池
$config = new Config();
$redisConfig1 = new RedisConfig([
'host' => '127.0.0.1',
'port' => '6379'
]);
// 这里的redis连接池看文档配吧
Manager::getInstance()->register(new RedisPool($config,$redisConfig1),'redis');
//TODO:: 延迟队列消费进程
$processConfig= new \EasySwoole\Component\Process\Config();
$processConfig->setProcessName('testProcess');
\EasySwoole\Component\Process\Manager::getInstance()->addProcess(new Consumer($processConfig));
}
public static function onRequest(Request $request, Response $response): bool
{
// TODO: Implement onRequest() method.
return true;
}
public static function afterRequest(Request $request, Response $response): void
{
// TODO: Implement afterAction() method.
}
}
扔到延迟队列
<?php
namespace App\HttpController;
use EasySwoole\Http\AbstractInterface\Controller;
use EasySwoole\Pool\Manager;
class Index extends Controller
{
function index()
{
/** @var $redis \EasySwoole\Redis\Redis*/
$orderId = date('YmdHis', time());
$redis = Manager::getInstance()->get('redis')->getObj();
$res = $redis->zAdd('delay_queue_test1', time(), $orderId);
if ($res) {
$this->writeJson(200, '订单添加成功:'.$orderId);
}
}
}
延迟队列消费进程
<?php
namespace App\Process;
use EasySwoole\Component\Process\AbstractProcess;
use EasySwoole\Pool\Manager;
use Swoole\Coroutine;
class Consumer extends AbstractProcess {
protected function run($arg)
{
go(function (){
while (true) {
//TODO:: 拿到redis
/** @var $redis \EasySwoole\Redis\Redis*/
$redis = Manager::getInstance()->get('redis')->defer();
//TODO:: 从有序集合中拿到三秒(模拟30分钟)以前的订单
$orderIds = $redis->zRangeByScore('delay_queue_test1', 0, time()-3, ['withscores' => TRUE]);
if (empty($orderIds)) {
Coroutine::sleep(1);
continue;
}
//TODO::拿出后立马删除
$redis->zRem('delay_queue_test1', ...$orderIds);
foreach ($orderIds as $orderId)
{
var_dump($orderId);
//TODO::判断此订单30分钟后,是否仍未完成,做相应处理
}
}
});
}
}
测试
请求index/index 投递订单到延迟队列
➜ ~ curl 127.0.0.1:9501/index/index
{"code":200,"result":"订单添加成功:20200422004046","msg":null}%
等3s看终端是否输出
➜ easyswoole php easyswoole start
______ _____ _
| ____| / ____| | |
| |__ __ _ ___ _ _ | (___ __ __ ___ ___ | | ___
| __| / _` | / __| | | | | \___ \ \ \ /\ / / / _ \ / _ \ | | / _ \
| |____ | (_| | \__ \ | |_| | ____) | \ V V / | (_) | | (_) | | | | __/
|______| \__,_| |___/ \__, | |_____/ \_/\_/ \___/ \___/ |_| \___|
__/ |
|___/
main server SWOOLE_WEB
listen address 0.0.0.0
listen port 9501
ip@en0 192.168.43.57
worker_num 8
reload_async true
max_wait_time 3
pid_file /Users/xx/sites/easyswoole/Temp/pid.pid
log_file /Users/xx/sites/easyswoole/Log/swoole.log
user xx
daemonize false
swoole version 4.4.15
php version 7.2.18
easy swoole 3.3.7
develop/produce develop
temp dir /Users/xx/sites/easyswoole/Temp
log dir /Users/xx/sites/easyswoole/Log
string(14) "20200422004046"
总结
这只是一个思路,大家可以根据实际业务做不同调整
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