Add data persistence

My data lives in memory or local state right now and disappears on refresh. I need persistence.

Current state: {{where data lives now, e.g. React state / localStorage}}
Data to store: {{the shape}}
Scenario: {{single user / multi-user / needs cross-device sync?}}
Stack: {{e.g. Next.js}}

Please:
1. Recommend a storage option for my scenario (localStorage / file / SQLite / hosted DB) with tradeoffs.
2. Give complete integration code including reads, writes and error handling.
3. Cover migration: what happens to data that already exists?
4. Flag what to watch: concurrent writes, validation, backups, privacy.

Rules:
- Do not jump to the most complex option - localStorage may genuinely be enough here.
- For user data, call out privacy and compliance explicitly.
- Give me a way to verify the data is actually persisted.

Replace the {{}} parts with your own content

Why it works

1. Scenario-based recommendation instead of defaulting to a database avoids over-engineering - many small tools are fine with localStorage
2. "What about migration" is the most forgotten and most painful step when adding persistence
3. Requiring privacy and compliance notes matters because these are hard constraints once real users are involved
4. A verification method confirms data truly landed instead of assuming it did

What it looks like

For a local tool, AI may suggest starting with localStorage (zero cost) and say at what scale moving to a real database becomes worth it.

Where it bites

• !Reaching for a database immediately and taking on ops burden for a single-user tool
• !Skipping validation, so data writes fine and reads back dirty

Browse categories