Spring Boot Microservices Architecture with WebFlux

This project is a small example of a microservices architecture built with Spring Boot. It aims to demonstrate the basics of microservices, Eureka for service discovery, and inter-service communication using WebClient. The project includes the following components:

Architecture

Services

1. API Gateway: This service acts as a gateway for routing requests to the appropriate microservices. It is an Eureka client.

2. Rent Service: Manages the renting process, including creating and retrieving rental information. It is also an Eureka client.

3. Service Registry: A Eureka server that registers all microservices and provides service discovery.

4. User Service: Manages user information and operations. It is an Eureka client.

5. Vehicle Service: Manages vehicle information and operations. It is an Eureka client.

Database Usage

• user-service: Manages user information using PostgreSQL.
• vehicle-service: Manages vehicle information using PostgreSQL.
• rent-service: Manages rental operations using PostgreSQL.

Each service in this project utilizes its own PostgreSQL database for data storage and management.

Communication between Services

The microservices communicate with each other using WebClient. WebClient is a non-blocking, reactive client used for making HTTP requests. In this project, it is used to enable efficient and asynchronous communication between the services.

Running the Project

Each service has its own docker-compose.yaml file for containerization. Additionally, there is a root-level docker-compose.yaml file for Zipkin, which is used for distributed tracing.

To run the project:

1. Start the Service Registry:

   cd service-registry
   docker-compose up -d
   

2. Start the Microservices:

   cd user-service
   docker-compose up -d
   
   cd vehicle-service
   docker-compose up -d
   
   cd rent-service
   docker-compose up -d
   
   cd api-gateway
   docker-compose up -d
   

Features

• Service Discovery: Using Netflix Eureka for dynamic service registration and discovery.
• API Gateway: Centralized access point to the microservices.
• WebClient: Efficient inter-service communication.
• Docker Compose: Containerization of each microservice and Zipkin for easy deployment.
• Distributed Tracing: Using Zipkin to trace requests across microservices.

---

I hope this project helps you understand the basics of building a microservices architecture with Spring Boot. If you have any questions or suggestions, feel free to reach out!