AirLinq - Airline Management Microservices Platform

Java
Spring Boot
Spring Cloud
Docker
MySQL
Razorpay

AirLinq is a full-stack-ready airline booking backend built with Spring Boot microservices. It models a real airline reservation workflow including user authentication, airline onboarding, aircraft and flight operations, pricing, seat inventory, booking, and Razorpay-based payment verification.

The project is designed to demonstrate production-style backend engineering concepts such as service discovery, API gateway routing, JWT authentication, inter-service communication, containerization, and end-to-end booking orchestration.

Key Features

Authentication And Authorization

- JWT-based login and signup

- API Gateway level JWT validation

- Role-based access for users, airline owners, and system admins

- User identity forwarded to services using headers:

- X-User-Id

- X-User-Email

- X-User-Role

Airline And Aircraft Management

- Airline registration by airline owners

- Airline approval, suspension, and ban support

- Aircraft creation with class-wise seat capacity

- Aircraft status and availability management

Location Service

- City APIs

- Airport APIs

- Airport lookup by city

- Search and filtering support

Flight Operations

- Flight creation between two airports

- Flight schedule creation

- Flight instance generation

- Search flight instances by route and date

- Flight status lifecycle support

Pricing Service

- Fare creation by airline owners

- Fare search by airline, flight, flight instance, cabin class, fare type, and status

- Lowest fare lookup

- Baggage policy management

Seat Service

- Seat map creation per aircraft

- Seat creation by cabin class and seat type

- Seat instance generation per flight instance

- Seat hold, book, release, block, and unblock flow

- Expired held seat release support

Booking Service

- Booking creation with passenger details

- Seat hold during booking creation

- Booking confirmation after successful payment

- Booking cancellation and pending booking expiration

- Booking lookup by id, reference, and user

Payment Service

- Razorpay order creation

- Razorpay payment verification

- Payment status tracking

- Automatic booking confirmation after successful payment

DevOps

- Dockerized services

- Docker Compose support

- MySQL container setup

- Eureka-based service discovery

- API Gateway as single public entry point