Microservice Architecture with Spring Boot, Spring Cloud and Docker

100+ open-source clones of popular sites like Airbnb, Amazon, Instagram, Netflix, Tiktok, Spotify, Whatsapp, Youtube etc. See source code, demo links, tech stack, github stars.

Master programming by recreating your favorite technologies from scratch.

Interactive roadmaps, guides and other educational content to help developers grow in their careers.

Curated list of project-based tutorials

Point of Sale System written in JAVAFX

Roadmap to becoming a Java developer in 2026

Source code for the HappyCoders.eu articles on pathfinding and shortest path algorithms (Dijkstra, A*, Bellman-Ford, Floyd-Warshall).

Course Material for in28minutes courses on Java, Spring Boot, DevOps, AWS, Google Cloud, and Azure.

A Flutter based OTP Authentication component, used to verify your mobile number with OTP (One Time Password) using Firebase Authentication.

The Complete Coding Interview Guide in Java, published by Packt

A guide for onboarding a Spring Boot/React sample application to PingAccess.

e-Books

All full stack examples with Spring Boot and React for articles on our website http://www.springboottutorial.com

Getting Started with Spring Boot 3:

All development has moved to https://github.com/awspring/spring-cloud-aws Integration for Amazon Web Services APIs with Spring

Integration for Google Cloud Platform APIs with Spring