Supabase makes the backend accessible, not automatic
Supabase provides an excellent foundation, but a reliable application still requires deliberate data modeling, clear service functions, error handling, and security policies.
Keep database calls in service modules
Centralizing reads, writes, uploads, and updates keeps React components focused on the interface. It also gives the application one place to normalize errors and change query behavior later.
Row-level security changes how you think
Security policies should be planned alongside the feature. A query can be perfectly written in React and still fail because the signed-in user does not have the correct policy. Treating security as part of feature design prevents last-minute surprises.
Storage and database records must stay synchronized
- Upload the file and capture its final URL.
- Update the correct database record.
- Handle partial failures safely.
- Clean up storage when records are permanently removed.
Serverless functions protect credentials
API secrets should not live in frontend JavaScript. Supabase Edge Functions provide a practical server-side boundary for third-party integrations, authentication tokens, and normalized API responses.