Picking the right architecture = Picking the right battles + Managing trade-offs

1. Clarify and agree on the scope of the system

• User cases (description of sequences of events that, taken together, lead to a system doing something useful)
  • Who is going to use it?
  • How are they going to use it?

For those JavaScript programmers, event loop is an important concept, inevitably.

Literally, event loop is what JavaScritp uses to implement non-blocking execution. Understanding how the event loops works internally would benefit you a lot when programming in JavaScript.

There are two major environments JavaScript runs in: browser and Node.js.