I work with Play Framework (<a href="https:&#x2F;&#x2F;playframework.com" rel="nofollow">https:&#x2F;&#x2F;playframework.com</a>) which is probably most well known scala MVC framework out there. Now I don&#x27;t know about node.js based backends, but apparently Play can do 60K requests per second out of the box (<a href="https:&#x2F;&#x2F;playframework.com&#x2F;documentation&#x2F;2.5.x&#x2F;Highlights25#performance-improvements" rel="nofollow">https:&#x2F;&#x2F;playframework.com&#x2F;documentation&#x2F;2.5.x&#x2F;Highlights25#p...</a>) which is pretty good scalability.