What is the difference between using Vuex and a simple global store
Aug 02, 2025 am 04:56 AM
Vuex provides a structured, scalable state management solution with centralized state, mutations, actions, and getters, while a simple global store is just a reactive object without enforced patterns. 2. A global store works for small apps but lacks debugging support and reactivity tracking in Vue DevTools, unlike Vuex. 3. Vuex enables time-travel debugging, mutation logs, and action tracking, making state changes traceable. 4. In team environments or larger applications, Vuex enforces maintainable patterns by restricting direct state mutations. 5. Use a simple global store for small apps or prototypes, but choose Vuex (or Pinia) for medium to large apps requiring debugging, logging, and team collaboration. The main difference is that a global store is quick and flexible, while Vuex offers sustainable, debuggable, and scalable state management.
The main difference between using Vuex and a simple global store in a Vue application comes down to structure, scalability, debugging, and reactivity guarantees—especially as your app grows.
1. Vuex Is Built for State Management at Scale
Vuex is Vue’s official state management pattern and library. It’s not just a global object—it’s a structured, predictable state container that enforces best practices like:
- Centralized state: All shared data lives in one place.
- Mutations for state changes: State can only be changed via explicit mutation functions (synchronous).
- Actions for side effects: Async operations (like API calls) go in actions, which then commit mutations.
- Getters for computed state: Reusable computed properties over the state.
This structure makes it easier to track how and why state changes happen.
// Vuex example
const store = new Vuex.Store({
state: {
count: 0
},
mutations: {
INCREMENT (state) {
state.count
}
},
actions: {
increment ({ commit }) {
commit('INCREMENT')
}
},
getters: {
doubleCount: state => state.count * 2
}
})2. A Simple Global Store Is Just a Reactive Object
A "simple global store" usually means something like a reactive Vue object (in Vue 2) or a reactive object using reactive() or ref() (in Vue 3), shared across components.
// Simple global store (Vue 3)
import { reactive } from 'vue'
export const store = reactive({
count: 0,
increment() {
this.count
}
})It works fine for small apps, but lacks structure. You can mutate state from anywhere, making it hard to debug when things go wrong.
3. Reactivity and Debugging Differences
-
Vuex integrates with Vue DevTools, so you get:
- Time-travel debugging
- Mutation logs
- State snapshots
- Action tracking
A simple store won’t show up cleanly in devtools unless you manually set it up. You lose visibility into when and where state changed.
4. Scalability and Team Workflow
- In a team or large app, Vuex (or Pinia, its modern successor) helps enforce consistent patterns.
- With a simple store, anyone can mutate state directly (
store.count), leading to spaghetti logic. - Vuex forces you to go through mutations and actions, making code more maintainable and testable.
5. When to Use Which?
| Use Case | Recommendation |
|---|---|
| Small app, few shared state | Simple global store is fine |
| Medium to large app, multiple devs | Use Vuex (or Pinia) |
| Need debugging, logging, audit trail | Vuex or Pinia |
| Quick prototype | Global reactive object |
Bottom Line
A simple global store works for small apps, but Vuex gives you structure, tooling, and scalability. It prevents common pitfalls of uncontrolled state mutation and makes your app easier to maintain as it grows.
For new projects, consider Pinia (Vue’s recommended replacement for Vuex), which keeps the benefits but with a simpler API.
Basically:
- Global store = quick and dirty
- Vuex/Pinia = sustainable and debuggable
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