Kapan sampeyan pancen butuh perpustakaan manajemen state?

Question

Accepted Answer

**Sampeyan ora kudu kudu nggunaake**. Framework modern duwe piranti state built-in sing mampu, lan nggunakake Redux/Zustand langsung nambah kerumitan. Jawaban sing jujur: tambahaké perpustakaan mung nalika pilihan built-in dadi nyeri.

## Mula saka piranti built-in

```jsx
// most state needs are met by:
const [x, setX] = useState();           // local component state
const value = useContext(MyContext);    // share across a subtree
const memo = useMemo(() => derive(), [x]); // derived values
// + a server-state library (React Query) for fetched data
```

Local state + Context + (kanggo data remot) React Query nutupi mayoritas aplikasi. Akeh aplikasi produksi ora perlu perpustakaan state global.

## Tandha-tandha sampeyan mbok menawa pancen butuh perpustakaan

```text
✓ Lots of GLOBAL state shared across many distant components
✓ Complex state interactions / frequent updates that Context handles poorly
                       (Context re-renders all consumers on any change)
✓ You need devtools, time-travel debugging, or strict update traceability
✓ Many components both read AND write the same shared state
✓ Predictable, centralized update logic matters for a large team
```

## Kenapa ora "gunakaké Redux wae"?

```text
Cost of a library: boilerplate, learning curve, more indirection, bundle size.
For a small/medium app, that cost often outweighs the benefit.
```

## Jupitakaké piranti kasaring kabutuhan

```text
Server/remote data        → React Query / SWR (NOT a global store)
A few global values        → Context, or a tiny store (Zustand/Jotai)
Large, complex shared state→ Redux Toolkit, or Zustand for less boilerplate
Form state                 → a form library (React Hook Form), not global state
```

Bagean amba "kita butuh Redux" sejatine masalah server-state sing luwih apik dirampungake dening React Query, utawa sawenehe nilai sing dirampungake dening Context/Zustand.

## Kenapa iki penting

Ngerti *kapan* perpustakaan state perlu nyegah kesalahan umum overengineering — nambahake Redux ing aplikasi sing mung butuh `useState` lan Context.

Cara matang yaiku mulai sederhana, ngenali *nyeri spesifik* (pangibaran jero, update rumit, caching server), lan ambil *piranti nggon* kanggo nyeri iku (asring panyimpenan enteng utawa perpustakaan server-state, ora sing abot global).

Pilih solusi minimal sing pas ngetokaké aplikasi luwih sederhana, luwih cepet dibangun, lan luwih gampang dijaga.