title: How to use the bottleneck npm module
body: <p>I just found out about this bottleneck npm module to limit the no of requests per second. I understood the bottleneck() constructor, but cannot understand the submit and schedule() methods, probably because I am a beginner in node and don't know about promise.</p>
  
  <p>Anyway, I couldn't find any examples about using bottleneck from google.</p>
  
  <p>A bottleneck example in basic nodejs and express could help a lot.</p>
  
  <p>Here is the npm package: <a href="https://www.npmjs.com/package/bottleneck" rel="noreferrer">bottleneck npm module</a></p>