Building a Spring Boot CRUD App With Postgres from Scratch: The Complete Guide

Want to learn how to build a real-world Java backend using Spring Boot and PostgreSQL?

This blog series guides you through every stage. From setting up the project and database connection to building an application with CRUD endpoints, REST APIs, validation, testing, security, and documentation, all the way through to deployment.

What are Spring & Spring Boot?

Spring is a popular Java framework that helps you build robust, testable, and maintainable applications.
Spring Boot builds on top of Spring, giving you production-ready features like autoconfiguration, embedded servers, and simplified project setup all with minimal boilerplate.

Why use Spring Boot?

Opinionated defaults for fast development
Excellent support for testing and modular design
Huge ecosystem (Spring Security, Spring Data, etc.)
Easy to deploy and scale for real-world apps

What & Why PostgreSQL?

PostgreSQL is a powerful, open-source relational database known for its stability and standards compliance. It supports complex queries, Atomicity, Consistency, Isolation, and Durability (ACID) transactions, indexing, and much more, making it a great choice for Java backends where reliability and data integrity matter.

Series Posts

Follow along with the series GitHub repo.

At the bottom of each blog post there will be a link to GitHub with a finished example.