队列的实际应用，比如发邮件！！！
队列实现看似简单，我想问下，在比如发送大量邮件的情况的，进入队列和消除队列，肯定不是在统一时间进行的吧，比如我调用inqueue.php进队列加入要发送的邮箱地址，dequeue.PHP发送邮件并消除减去队列，这两个肯定不是一起运行的吧？。还是在queue.php里边先进队列在消除队列如果是这样的话那和用循环有什么区别？
<code>谁能以发送大量邮件为例子给解释下队列的实际用法吗 </code>
回复内容：
队列实现看似简单，我想问下，在比如发送大量邮件的情况的，进入队列和消除队列，肯定不是在统一时间进行的吧，比如我调用inqueue.php进队列加入要发送的邮箱地址，dequeue.PHP发送邮件并消除减去队列，这两个肯定不是一起运行的吧？。还是在queue.php里边先进队列在消除队列如果是这样的话那和用循环有什么区别？
<code>谁能以发送大量邮件为例子给解释下队列的实际用法吗 </code>
队列怎样运作你基本上不需要考虑，只要使用现成的队列即可，例如httpsqs，简单的消息队列，先进先出，用http操作，简单易用，只关系入列和出列即可，至于有什么用，例如邮件发送、大量数据写入、短信发送、反正可以异步操作的尽量队列完成
参考这个：http://segmentfault.com/q/1010000000750317/a-1020000000750367
本质就是异步和阻塞。
不用队列
进入操作平台
点击发送按钮
等……
等……
咦…… 怎么没有反应……
或者人性化点儿，添加一个进度条
N分钟后，操作完成
在这个过程中，你是不能进行任何操作的。
使用队列
进入操作平台
点击发送按钮
（想等，想偷懒，没门，已经结束了）
继续进行其它操作。
我前几天也提了这个问题和你的比较相似点这里
现在我想的解决方案是，将任务以队列形式交给后台执行，至于你的问题，队列的优点就是你发送了一个任务，交给worker去执行，你可以继续做想做的事情，然后通过事件监听来记录每个条目执行成功与否，成功后消除。
php的话用gearman就挺好，或者redis来处理队列
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