README - FLYER ✈️ (Flight Connections Search Application)

Description

FLYER is a system that provides an API service for users to search available flight connections and make flight reservations. The system is built on a microservices architecture, with communication through events. Additionally, the application includes several microservices, including an API Gateway and Discovery Server, to assist in managing and scaling microservices.

Used Technologies 🛠️

Microservices

The application consists of several microservices, each being an independent component:

• Tracking Service: Responsible for tracking and managing flight reservations.

• Reservation Service (DDD): Developed following Domain-Driven Design (DDD) principles to manage flight reservations.

• API Gateway: Acts as an API gateway, controlling access to individual microservices and routing requests to the appropriate services.

• Discovery Server: Acts as a service registration and discovery server, making it easier to scale and manage microservices.

Communication Between Microservices 📡

• Apache Kafka: The system utilizes Apache Kafka for inter-microservice communication, using events to transmit information and synchronize data between services.

Databases 📊

• MongoDB: The application uses MongoDB to store data related to flight reservations.

• PostgreSQL: PostgreSQL is used to store other flight-related data, such as flight information and routes.

Testing 🧪

• Testcontainers: We use Testcontainers for testing purposes, which allows us to run Docker containers to test our microservices and databases.

Authentication and Authorization 🔒

• JSON Web Tokens (JWT): To ensure secure access to the application, JWT is used for user authentication and authorization.

Data Management 🧾

• Liquibase: The application uses Liquibase to manage database schema and migrations, with pre-populated data for initial setup.

Docker Compose 🐳

• Docker Compose: The project utilizes Docker Compose to run Docker containers containing microservices and necessary services like databases and Apache Kafka.

Running Instructions 🏃‍♂️

1. Dependencies: Ensure you have the following dependencies installed:

   • Docker
   • Docker Compose

2. Configuration: Configure database access, Kafka settings, and other parameters in the configuration files of the microservices.

3. Running Microservices: Run Docker Compose, which will automatically start Docker containers containing microservices and other required services.

4. Running API Gateway: Start the API Gateway microservice and configure redirects to the appropriate microservices.

5. Running Discovery Server: Run the Discovery Server microservice to register other microservices.

Usage Instructions 🚀

After successfully running the FLYER application, other systems or client applications can use the API service provided by FLYER to search for and reserve flight tickets.

Author 📝

The FLYER application was created by Mateusz Milewczyk.

Contact 📬

For inquiries or feedback regarding the FLYER application, please contact me via direct message.

Thank you for using API, and I wish you a pleasant experience with my flight services! ✈️🌍