title: If I am building a social media app, how do I go about storing the likes of a post?
body: <p>I am building a social media clone following this tutorial
  <a href="https://www.youtube.com/watch?v=U7uyolAHLc4&amp;list=PLB97yPrFwo5g0FQr4rqImKa55F_aPiQWk&amp;index=30" rel="nofollow noreferrer">https://www.youtube.com/watch?v=U7uyolAHLc4&amp;list=PLB97yPrFwo5g0FQr4rqImKa55F_aPiQWk&amp;index=30</a>
  However, storing this way seems infeasible if a post has 1 million likes or so. Can anyone tell any effienct way of going about this??</p>