title: Messenger Platform Limit Error (#613) Calls to this api have exceeded the rate limit
body: <p>I'm having trouble stress testing my app with the Messenger Platform to send the same message to several users in a small timeframe. I'm getting a Limit Error: <code>(#613) Calls to this api have exceeded the rate limit.</code></p>
  <p>Currently I'm testing this by sending the same message several times to the same user (me); in a real world scenario, the same message would be sent to several different users of course.</p>
  <p>Also, I'm using a test application of a live app to perform these tests. Is this supposed to drastically improve in the live app?</p>
  <p>I really need a nice throughput broadcasting messages, so currently my setup has several threads spawn (50) sending messages in parallel, some of them already hit this limit and error out.
  Also, I tried the Batch Requests to improve the speed of the delivery process, and at that point it really becomes unbearable, with a success rate of less than 50%.</p>
  <p>I've read about general Graph API rate limits (<a href="https://developers.facebook.com/docs/graph-api/advanced/rate-limiting" rel="noreferrer">https://developers.facebook.com/docs/graph-api/advanced/rate-limiting</a>), and to send a message you provide a Page Access Token, so I would expect my app to fall into the &quot;Page-Level Rate Limiting&quot; category, if I was sending too many messages. However, in the error responses there are no X-Page-Usage headers (neither X-App-Usage, by the way).</p>
  <p>In the Messenger Platform documentation (<a href="https://developers.facebook.com/docs/messenger-platform/send-api-reference#limits" rel="noreferrer">https://developers.facebook.com/docs/messenger-platform/send-api-reference#limits</a>) the following is stated:</p>
  <blockquote>
  <p>Messenger Platform supports a high rate of calls to the Send API.</p>
  <p>However, you should architect your system such that you distribute any sudden high amounts of load over time and are able to control your throughput should you hit our rate limits.</p>
  <p>Rate limits are in place to prevent malicious behavior and poor user experiences.</p>
  <p>Be sure to catch any errors returned by the Send API including the one indicating that you've reached the rate limit.</p>
  </blockquote>
  <p>These are not particularly helpful either, since they don't explicitly refer to the general Graph API limits neither specify a different amount of requests you're allowed to perform.</p>
  <p>Is there anything that I might be missing?</p>