Apr 5
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This Spring Boot Microservices Project Will Make You a Senior Dev full course : https://superprofile.bio/course/6d159d13-1655-4952-86e4-44b0ef368319 Most Java developers build CRUD apps and call it a day. In this video, I'll show you a production-grade Airline Global Distribution System (GDS) — 11 Spring Boot microservices, Kafka event streaming, Redis caching, dual payment gateways, and a full React frontend. This is the kind of system that powers real airline booking platforms like Amadeus and Sabre. Let's break down how it all works. 👇 📌 What This Project Is A full-stack Airline Booking Platform built as a microservices architecture. It covers everything from airline registration, flight scheduling, and seat map management — to real-time flight search, passenger booking, Razorpay payments, and automated email confirmations. This is not a tutorial project. This is a portfolio-grade system designed to demonstrate senior Java backend skills. 🧠 What You'll Learn From This How to design and build 11 Spring Boot microservices with clear domain boundaries How to build a Kafka Choreography Saga for the booking → payment → seat reservation → notification flow How to implement multi-layer Redis caching with smart TTL strategies (2 min for fares, 6 hours for airports) How to build a Spring Cloud API Gateway with JWT authentication, role-based routing, and circuit breaker protection How to integrate Razorpay and Stripe with cryptographic signature verification How to send Thymeleaf HTML emails and Twilio SMS notifications via Kafka events How to build a React 19 + Redux Toolkit frontend with Radix UI, Framer Motion, and Recharts How to containerize everything with Docker Compose (11 services + 9 databases + Redis + Kafka — all running locally) How to build Docker images from Maven with Google Jib (no Dockerfile needed) ⚙️ Tech Stack Backend Java 17 + Spring Boot 4 + Spring Cloud 2025.1.0 Apache Kafka 4.1.1 (KRaft — no Zookeeper) Redis 7.2 (Spring Cache + JWT Blacklist) Spring Cloud Gateway, Eureka, Config Server OpenFeign + Resilience4j (Circuit Breaker) Spring Security + JWT (JJWT 0.12.6) JPA / Hibernate + MySQL Payments & Notifications Razorpay Java SDK Spring Mail + Thymeleaf (HTML emails) Frontend React 19.1.1 + Vite Redux Toolkit + React Redux Tailwind CSS 4 + Radix UI + Framer Motion Recharts + React PDF Renderer DevOps Docker + Docker Compose Google Jib (Maven Docker builds) Spring Actuator + Eureka Dashboard 🎯 Who Should Watch This Java developers who know Spring Boot basics and want to learn real microservices Backend engineers preparing for interviews at product companies Full-stack devs who want to understand enterprise-grade backend architecture Students who've finished a Spring Boot course and are wondering "what next?" Anyone building a travel-tech, fintech, or booking platform 📚 Key Topics Covered Microservices architecture & domain-driven design (11 services, 9 databases) Kafka event streaming — producers, consumers, consumer groups, event schemas Booking Saga using Kafka choreography (no orchestrator needed) Compensation events for failed payments (PaymentFailedEvent) Redis caching — @Cacheable, @CacheEvict, custom key generators, TTL per cache type JWT security — issuance, validation, token blacklisting with Redis OpenFeign declarative clients with Resilience4j circuit breaker fallbacks Flight search using JPA Criteria API / Specification pattern Seat inventory management — SeatInstance with availability state machine Razorpay order creation + HMAC-SHA256 signature verification Stripe PaymentIntent creation + confirmation HTML email templates with Thymeleaf (booking confirmation with full details) PDF e-ticket generation in React (React PDF Renderer) Docker Compose for full local environment with health checks and restart policies Google Jib for Maven-native Docker image builds 🔥 Why This Project Matters The airline booking industry processes billions of transactions daily. The systems behind it — GDS platforms, airline reservation systems, OTA backends — are among the most technically demanding distributed systems in the world. Building a simplified version of this teaches you more about real-world distributed systems design than any generic microservices tutorial can. Every pattern used here — event-driven sagas, per-service databases, circuit breakers, distributed caching — is directly applicable to fintech, e-commerce, logistics, and any other domain that requires scale and reliability. If you can explain how this system handles a booking failure while 200 other passengers are searching for the same seat, you can answer any distributed systems question in an interview. Built with Spring Boot 4.0.2 · Spring Cloud 2025.1.0 · Apache Kafka 4.1.1 · Redis 7.2 · React 19 · Docker