title: Is it possible to integrate AWS SNS and AWS SQS FIFO queue
body: <p>With the <a href="http://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/FIFO-queues.html" rel="noreferrer">introduction of FIFO queues in SQS</a> we are guaranteed that SQS messages will be delivered in order.</p>
  
  <p>Now, could there be an out-of-order delivery when I publish messages through SNS? Here's what I'm thinking that could happen:</p>
  
  <pre><code> _____                       _____                       __________
  | App |-- Publish msg 1 --&gt; | SNS | --&gt; Queue msg 2 --&gt; | FIFO SQS | --&gt; Consume 2
  |     |-- Publish msg 2 --&gt; |     | --&gt; Queue msg 1 --&gt; |          | --&gt; Consume 1
   -----                       -----                       ----------
  </code></pre>
  
  <p>Is that scenario possible?</p>