Part 3 — Backend Foundations with NestJS + Prisma (PostgreSQL)

This post walks you through setting up a clean NestJS backend with Prisma and PostgreSQL — the foundation for all backend work across the rest of this series.

Clean REST architecture starts with controllers, services, and DTO validation. In this post, you’ll build the structure behind every API endpoint you’ll create moving forward.

This post teaches you how to design efficient, relational Prisma queries while avoiding N+1 errors, modeling relations cleanly, and thinking like a PostgreSQL-first backend engineer.

Production backends thrive on predictable errors, structured validation, and consistent responses. In this post, you’ll learn how to build those foundations using NestJS pipes, filters, and interceptors.

Your API becomes truly useful only when the frontend can rely on it. In this post, you’ll learn how to shape consistent REST contracts, shared types, and error formats for React applications.

A productive backend engineer knows how to manage migrations, environments, Dockerized databases, and workflow scripts. This post makes those skills second nature.