It really depends on your app logic. If you need to process data in waterfall like model and you have multiple tasks working in same time you still need to us

It really depends on your app logic. If you need to process data in waterfall like model and you have multiple tasks working in same time you still need to use asynchronous calls or you will lock the execution of code in node. In go you just lock the gorutine in which you make I/O call.