How To Handle Data Access Like a Senior Dev

Demonstrates how to implement a proper data access layer (DAL) in Next.js applications to centralize database operations, user authentication checks, and error handling. Shows the evolution from naive direct database access in components to a sophisticated system that returns either success or error states, enabling flexible handling of different scenarios like API routes vs page rendering. Covers both basic and advanced DAL patterns with TypeScript for better type safety and maintainability.