SparkPost API error: 'Too many requests'
<p>When I run requests series like</p>

<pre><code>https://api.sparkpost.com:443/api/v1/suppression-list/he**0@gmail.com
</code></pre>

<p>Sometimes, I get error:</p>

<blockquote>
  <p>name: 'SparkPostError', 
  errors: [ { message: 'Too many requests' } ],
  statusCode: 429</p>
</blockquote>

<p><em>Too many - this is how many?
How long the server keeps track of period? How long the server resets the counter? How to solve this problem?</em></p>