Stop Hardcoding DBs! Spring Boot 4 Microservices: Local PostgreSQL Setup with Docker in 15 Mins
Stop hardcoding database configurations or running manual docker run commands! In this tutorial, you will learn how to build a production-ready Spring Boot 4 microservice that automatically provisions, manages, and connects to a PostgreSQL container using native Docker Compose integration.
By the end of this 15-minute guide, your Java microservices will automatically spin up their database dependencies on startup—completely free on localhost without needing cloud subscriptions or complex setup.
What You Will Learn:
Setting up Spring Boot 4 with spring-boot-docker-compose
Structuring a clean compose.yaml for PostgreSQL persistence
Dynamic connection injection via Spring Data JPA & Hibernate
Testing CRUD REST endpoints using Postman
Fixing common port conflict and volume data loss errors
Timestamps:
00:00 - Live Result & Overview
00:32 - Microservice Architecture
01:00 - Spring Initializr
02:30 - Entity Model, JPA Repository & Controller Setup
07:15 - Writing the compose.yaml File
08:26 - Running the Application & Log Verification
10:34 - Common Docker Pitfalls & Next Steps
Source Code & Resources:
🐙 GitHub Repository: https://github.com/cosmosAlpha/product-ser...
📄 Spring Boot 4 Documentation: https://docs.spring.io/spring-boot/4.0/
#SpringBoot #Microservices #DockerCompose #PostgreSQL #Java #DevOps #BackendDevelopment