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HomeBackend DevelopmentPHP TutorialPHP使用任务队列这个词的含义,到底什么是任务队列

最近一个听到一个词:任务队列。
任务队列指的是什么呢?
我自己有一个理解,就是比如用户使用邮件注册,注册成功以后要给注册邮箱发一封信息。因为发邮件是很耗时的操作,所以将邮件放在队列中异步处理,不占用主线程。使用队列是不是就是这样的场景呢?
求大神解惑,传道!

回复内容:

最近一个听到一个词:任务队列。
任务队列指的是什么呢?
我自己有一个理解,就是比如用户使用邮件注册,注册成功以后要给注册邮箱发一封信息。因为发邮件是很耗时的操作,所以将邮件放在队列中异步处理,不占用主线程。使用队列是不是就是这样的场景呢?
求大神解惑,传道!

Yes, u 2 right.

可以给你提供一个方案,在 Redis 里面维护一个 List,业务代码给 List 里面插入邮箱地址,另外有一个脚本从 Redis 里面读到邮箱地址,专门做发送邮件的工作。
我写的一篇博客给出了 PHP 和 Redis 实现队列的示例:http://upliu.net/php-use-redis-as-queue-service.html

另外,天生异步的开发语言如Node.JS,进行网络请求(针对题主的场景就是发送邮件)的过程中不会阻塞住脚本的运行。

当然使用多进程也是可以的,在主进程里面 fork 出一个子进程,然后子进程去发送邮件,主进程继续执行其逻辑。不过我觉得这样略显蛋疼~

就是这样的。不过我通常不会用 php 来做这种持续性操作。

我的理解要按顺序执行的东西才用队例。
竟然你都启子线程了,为什么不多启几个子线程并行处理?
略显浅薄,求轻喷。

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