Building Reliable APIs with TypeScript and SQL: Lessons from Production

Reliable API design starts with predictable contracts. I treat request and response shape definitions as first-class code assets, not afterthoughts.

TypeScript helps reduce accidental breakage, especially when paired with clear domain modules and strict linting rules. It also improves communication between frontend and backend developers.

In SQL-backed systems, query clarity matters as much as query speed. I prefer explicit query intent, indexed access paths, and migration discipline over premature optimization.

As projects grow, observability becomes essential. Logging key business events and error contexts makes debugging dramatically faster and supports better long-term maintenance.