2026-05-19 · 1 min read
Validate UUIDs before database insert
Catch malformed IDs at the edge instead of in database error logs.
UUIDvalidationAPI
Key takeaways
- Validation is cheap compared to debugging driver exceptions.
- Batch-validate pasted lists when migrating legacy CSV imports.
Validate at the edge
Reject invalid IDs in request handlers with a clear 400 message.
Log the field name, not the full payload, when validation fails in production.
FAQ
Are uppercase UUIDs valid?
Hex casing is ignored by most validators; focus on version nibble and segment lengths.
What about UUID without dashes?
Some systems accept 32-hex forms—normalize in your API contract explicitly.