How to Resolve UUID Conflicts in PostgreSQL with Prisma

UUID conflicts are a common issue when scaling PostgreSQL databases. Here is how to solve them definitively.

The Problem

When multiple application instances generate UUIDs simultaneously, collisions can occur if using weak random generation.

Solution: Use Database-Level UUID Generation

Enable the pgcrypto extension and let PostgreSQL generate UUIDs:

model User {
  id String @id @default(dbgenerated("gen_random_uuid()")) @db.Uuid
}

Migration

Create a migration that enables the extension:

CREATE EXTENSION IF NOT EXISTS "pgcrypto";

Best Practices

• ●Always use UUIDv4 for new projects
• ●Let the database generate UUIDs, not the application
• ●Use Prisma's @db.Uuid for proper column typing

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