Java Spring Boot Microservices: Build Airline Booking System | Udemy

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Java Spring Boot Microservices: Build Airline Booking System | Udemy [Update 06/2026]
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Genre: eLearning

Learn Kafka, Redis, JWT, Docker, Spring Cloud & Production-Ready Backend Architecture by Building a Real Project

What you'll learn:

• 
  
• Build production-grade Java Spring Boot microservices
  
• Design a real Airline Booking & GDS platform
  
• Implement Kafka-based event-driven architecture
  
• Use Redis for caching and JWT token management
  
• Secure APIs using Spring Security & JWT
  
• Build distributed systems using Saga Pattern
  
• Implement API Gateway and Service Discovery
  
• Handle failures using Resilience4j circuit breakers
  
• Dockerize and orchestrate multiple services
  
• Understand real-world backend architecture patterns
  
• Docker Compose orchestration
  
• Production-ready deployment workflows
  
• how backend engineers think when building scalable systems.
  

Build a Real Airline Booking Platform with Java Microservices
This course teaches you how real systems are built.
You'll create a complete Airline Booking & Reservation Platform using Java Spring Boot Microservices - the same category of architecture used by airline booking systems and travel platforms worldwide.
Instead of small CRUD demos, you'll design and build a distributed backend system with real business workflows, production-grade architecture, event-driven communication, caching strategies, security, and scalable service interactions.
By the end of this course, you'll understand not only _how_ to build microservices - but _why_ modern systems are designed this way.
What You'll Build
You'll build a complete backend Airline Booking Platform featuring:
1. Flight Search Engine
2. Seat Availability Management
3. Fare Pricing System
4. Booking & Reservation Flow
5. Payment Integration
6. JWT Authentication & Authorization
7. Redis-Based Caching
8. Kafka Event-Driven Communication
9. API Gateway & Service Discovery
10. Notification System
11. Saga-Based Distributed Transactions
12. Dockerized Multi-Service Deployment
This project simulates a mini Global Distribution System (GDS) similar to systems used by airlines and travel companies.
Technologies Covered
Backend

• 
  
• Java
  

• 
  
• Spring Boot
  

• 
  
• Spring Cloud
  

• 
  
• Spring Security
  

• 
  
• Spring Data JPA
  

• 
  
• Spring Cloud Gateway
  

• 
  
• Netflix Eureka
  

• 
  
• OpenFeign
  

• 
  
• Resilience4j
  

• 
  
• Apache Kafka
  

• 
  
• Redis
  

• 
  
• MySQL
  

Security

• 
  
• JWT Authentication
  

• 
  
• Role-Based Access Control
  

• 
  
• Token Revocation using Redis
  

Architecture

• 
  
• Microservices Architecture
  

• 
  
• Database per Service Pattern
  

• 
  
• Event-Driven Systems
  

• 
  
• Saga Pattern
  

• 
  
• API Gateway Pattern
  

• 
  
• Distributed Communication
  

DevOps

• 
  
• Docker
  

• 
  
• Docker Compose
  

• 
  
• Google Jib
  

• 
  
• Spring Boot Actuator
  

Integrations

• 
  
• Razorpay
  

• 
  
• Email Notifications
  

What You'll Learn
Microservices Architecture

• 
  
• Design scalable distributed systems
  

• 
  
• Split domains into independent services
  

• 
  
• Handle inter-service communication
  

• 
  
• Implement API Gateway & Service Discovery
  

Kafka & Event-Driven Systems

• 
  
• Build asynchronous workflows
  

• 
  
• Publish & consume Kafka events
  

• 
  
• Implement booking saga flows
  

• 
  
• Handle failure recovery with compensation events
  

Security & Authentication

• 
  
• Secure APIs using JWT
  

• 
  
• Implement role-based access control
  

• 
  
• Manage token blacklisting with Redis
  

Redis Caching

• 
  
• Multi-layer caching strategies
  

• 
  
• Cache invalidation techniques
  

• 
  
• Performance optimization
  

Distributed System Design

• 
  
• Fault tolerance
  

• 
  
• Circuit breakers
  

• 
  
• Retry mechanisms
  

• 
  
• Service resilience patterns
  

Real Airline Domain Modeling

• 
  
• Flights & schedules
  

• 
  
• Fare rules
  

• 
  
• Seat inventory
  

• 
  
• Booking lifecycle
  

• 
  
• Passenger management
  

DevOps & Deployment

• 
  
• Containerize microservices
  

• 
  
• Docker Compose orchestration
  

• 
  
• Production-ready deployment workflows
  

Why This Course Is Different
Most microservices tutorials build simple ecommerce clones or CRUD demos.
This course focuses on:

• 
  
• - Real-world architecture
  

• 
  
• - Domain-driven thinking
  

• 
  
• - Event-driven backend systems
  

• 
  
• - Production-grade patterns
  

• 
  
• - Large-scale project structure
  

• 
  
• - Interview-level system design concepts
  

You won't just learn frameworks.
You'll learn how backend engineers think when building scalable systems.
Who This Course Is For
Perfect For:

• 
  
• Java developers moving beyond CRUD applications
  

• 
  
• Spring Boot developers learning microservices
  

• 
  
• Backend engineers preparing for interviews
  

• 
  
• Students building strong portfolio projects
  

• 
  
• Developers interested in Kafka & distributed systems
  

Prerequisites:

• 
  
• Basic Java knowledge
  

• 
  
• Basic Spring Boot understanding
  

• 
  
• REST API fundamentals
  

• 
  
• SQL basics
  

No prior Kafka or microservices experience required.
Key Features of the Project
Passenger Features

• 
  
• Flight search
  

• 
  
• Booking flow
  

• 
  
• Secure payments
  

• 
  
• E-ticket generation
  

• 
  
• Email confirmations
  

Airline Admin Features

• 
  
• Flight scheduling
  

• 
  
• Fare management
  

• 
  
• Fleet management
  

• 
  
• Seat inventory management
  

System Features

• 
  
• API Gateway
  

• 
  
• Kafka Event Streaming
  

• 
  
• JWT Security
  

• 
  
• Redis Caching
  

• 
  
• Circuit Breakers
  

• 
  
• Dockerized Architecture
  

What Makes This Valuable for Your Career
By the end of this course, you'll have:

• 
  
• A production-grade backend project
  

• 
  
• Strong system design understanding
  

• 
  
• Real microservices experience
  

• 
  
• Kafka architecture knowledge
  

• 
  
• A standout GitHub portfolio project
  

• 
  
• Skills used in product-based companies
  

This project demonstrates real backend engineering skills that companies look for in Java developers.

Who this course is for:
Java developers who want to move beyond basic CRUD applications
Spring Boot developers interested in learning real microservices architecture
Developers who want hands-on experience with Kafka and distributed systems
Full-stack developers who want deeper backend architecture knowledge
Developers aiming to understand system design through real implementation instead of theory
Anyone wanting practical experience with Docker, Redis, JWT, API Gateway, and Spring Cloud
Developers who want to learn how real airline booking systems work

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