> My plan was to just build it from scratch using socket.io. This doesn't scale, or you end up wasting all your resources on things that are not important to y

> My plan was to just build it from scratch using socket.io. This doesn't scale, or you end up wasting all your resources on things that are not important to your customers. Use something out there, if the business grew and you had nothing more impactful to do (building features that customers actually care about), invest on infrastructure.