Should I move from SQLite to PostgreSQL before launch?

Maybe — but not automatically.
Whether you should move from SQLite to PostgreSQL before launch depends on your app’s expected load, write concurrency, and deployment setup.

Move to PostgreSQL before launch if you expect:

• Multiple concurrent users writing at the same time
• A web app running on multiple instances/servers
• Need for stronger concurrency handling
• Complex queries, reporting, joins, or analytics
• Growing data size beyond a small app
• Need for role-based access, backups, replication, or high availability
• You’re deploying on a managed platform where Postgres is easy to use

Staying on SQLite is usually fine if:

• You’re launching an MVP or early-stage app
• Traffic will be low to moderate
• You have mostly reads and few writes
• You’re running on a single server/container
• You want simplicity and faster development
• Your app is internal, prototype-level, or single-user-ish

Important SQLite limitations to watch for:

• Write concurrency is limited compared to Postgres
• Harder to use safely across multiple app instances
• Less ideal for large-scale production multi-user apps
• Certain operational features are missing or less robust

A practical rule:

• If your app is a prototype / MVP and you want to ship fast: SQLite is fine
• If you’re building a production SaaS or public app with real traffic expectations: PostgreSQL is usually the better default

My recommendation

If you’re unsure and launch is near:

• Stay on SQLite if the app is simple and you haven’t hit concurrency issues
• Switch to PostgreSQL now if you already know you’ll need scaling, multiple writers, or production-grade operations soon

If you want, I can help you decide based on your exact stack and expected usage — just tell me:

1. app type
2. expected users/traffic
3. deployment (single server, Docker, serverless, etc.)
4. whether you expect multiple concurrent writes