mysql - php消息队列怎么做？
有这样的情况：
订单创建成功，向用户发送一条短信，一个邮件通知，……等操作，
由于邮件发送比较慢，很耗时，这就导致了用户下单会变慢。
听别人说可以使用消息队列，可是队列是啥啊？
我对队列的理解：有一个定时任务，定时的去跑脚本，脚本会执行消息队列（一个表）里未完成的任务，不断地去跑……
是这样的吗？
可是我就会php，买的是虚拟主机，不懂得配置服务器，我能实现队列吗？
像DZ，不也是个上传就完事了的程序吗，不也没怎么配置服务器呢，那么DZ有这样的队列服务吗，不然它的那些插件是怎么完成像队列一样的类似的服务的呢？
我感觉学PHP好像挺简单的，但到了真正做项目时才感觉到一无所用，感觉就像还没揭开它的神秘的面纱一样，还是我太菜了，希望大神指点迷津，谢谢了！
回复内容：
有这样的情况：
订单创建成功，向用户发送一条短信，一个邮件通知，……等操作，
由于邮件发送比较慢，很耗时，这就导致了用户下单会变慢。
听别人说可以使用消息队列，可是队列是啥啊？
我对队列的理解：有一个定时任务，定时的去跑脚本，脚本会执行消息队列（一个表）里未完成的任务，不断地去跑……
是这样的吗？
可是我就会php，买的是虚拟主机，不懂得配置服务器，我能实现队列吗？
像DZ，不也是个上传就完事了的程序吗，不也没怎么配置服务器呢，那么DZ有这样的队列服务吗，不然它的那些插件是怎么完成像队列一样的类似的服务的呢？
我感觉学PHP好像挺简单的，但到了真正做项目时才感觉到一无所用，感觉就像还没揭开它的神秘的面纱一样，还是我太菜了，希望大神指点迷津，谢谢了！
新起一个服务。内部的，用来发邮件的。用户创建订单的时候，反回创建成功，正在处理，然后吧要发邮件的任务放到一个队列里。比如数据库。
队列是一个虚拟概念。
然后内部的服务从队列里取（比如从数据库查询。）然后把邮件发出去，更改订单状态，下单成功
可以用redis队列
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