Most Vue tutorials teach you how to use Vue.

Very few teach you how Vue behaves in real production systems.

After working on large-scale frontend applications — especially in fintech products where state, performance, and maintainability matter — I’ve realised that the biggest difference between beginner and senior Vue developers is not syntax.

It’s how they think about:

Reactivity

State ownership

Component boundaries

Data flow

Architecture

So I decided to compile 30 practical Vue nuggets pulled from real-world experience building production applications with Vue and Nuxt.

Not theory.

Not tutorial fluff.

Just lessons that consistently matter when applications grow.

🟢 1. ref vs reactive — they solve different problems

One of the earliest Vue mistakes is using reactive for everything.

The mental model is simple:

Use ref for single values

Use reactive for structured objects

ref exists because primitives cannot be proxied like objects.…