Job Companies and Reviews Microservices Architecture

Overview

This Microservices-based REST API, built with Java 17 and Spring Boot, manages job listings, companies, and reviews for various companies. Each service is independently developed, ensuring scalability, maintainability, and fault tolerance. The API offers CRUD operations and uses a microservices architecture for efficient handling of resources. Integrated with tools like Spring Cloud, RabbitMQ, and Zipkin, the system supports service discovery, asynchronous communication, and distributed tracing.

Table of Contents

• Features
• Technologies Used
• Architecture
• Getting Started
  • Prerequisites
  • Installation
• API Endpoints
  • Company Endpoints
  • Job Endpoints
  • Review Endpoints
• Deployment
• Contributing
• License

Features

• Company Management: CRUD operations for companies.
• Job Management: CRUD operations for jobs within a company.
• Review Management: CRUD operations for reviews related to a company.
• Service Discovery: Seamless service registration and discovery using Eureka.
• Load Balancing: Intelligent routing and load balancing with Spring Cloud.
• Fault Tolerance: Resilient microservices with retry mechanisms and circuit breakers.
• Distributed Tracing: Integrated Zipkin for monitoring and tracing.

Technologies Used

• Java 17: Primary programming language.
• Spring Boot: Framework for building robust and scalable REST APIs.
• Spring Cloud Netflix Eureka: Service registry and discovery.
• Spring Cloud Gateway: API Gateway for routing and filtering requests.
• RabbitMQ: Message broker for asynchronous communication.
• MySQL or PostgreSQL: Relational database management.
• H2 Database: In-memory database for development and testing.
• JPA/Hibernate: ORM for database interactions.
• Maven: Dependency management and build automation.
• Lombok: Simplifies Java code by reducing boilerplate.
• Docker: Containerization for consistent environments.
• Zipkin: Distributed tracing for monitoring microservices.

Architecture

The system is composed of independent microservices, each responsible for a specific domain:

• Company Service: Handles company-related operations, including company details and job associations.
• Job Service: Manages job listings, including job creation, updates, and associations with companies.
• Review Service: Manages user reviews of companies, integrating with job data.
• Service Registry: Manages dynamic service registration and discovery using Eureka.
• API Gateway: Routes external requests to the appropriate microservice, handling load balancing and security.
• RabbitMQ: Enables asynchronous communication between services, enhancing scalability and resilience.

Getting Started

Prerequisites

• Java 17: Download from Oracle.
• Maven: Download from Apache Maven.
• MySQL or PostgreSQL: Install MySQL or PostgreSQL.
• Docker (optional): Download from Docker.

Installation

1. Clone the repository:

   git clone https://github.com/Mansoor-P/jobsmicroservices.git
   cd jobsmicroservices

2. Configure the databases: Update the application.properties or application.yml files in each service with your database credentials.

3. Build and package each service:

   mvn clean install

4. Start the Service Registry:

   cd service-registry
   mvn spring-boot:run

5. Start the microservices:

   cd ../company-service
   mvn spring-boot:run
   
   cd ../job-service
   mvn spring-boot:run
   
   cd ../review-service
   mvn spring-boot:run

6. Run API Gateway and other services as needed.

Deployment

To deploy the microservices architecture, Docker can be used for containerization. Alternatively, you can deploy each service to your cloud provider of choice (e.g., AWS, Azure, GCP).

• Docker Compose: Consider using Docker Compose for local deployment. Define services, networks, and volumes to manage the entire stack.

API Endpoints

Company Endpoints

• GET /companies: Retrieve all companies.
• POST /companies: Create a new company.
• GET /companies/{id}: Retrieve details of a specific company.
• PUT /companies/{id}: Update a company's details.
• DELETE /companies/{id}: Delete a company.

Job Endpoints

• GET /jobs: Retrieve all job listings.
• POST /jobs: Create a new job listing.
• GET /jobs/{id}: Retrieve details of a specific job.
• PUT /jobs/{id}: Update a job listing.
• DELETE /jobs/{id}: Delete a job listing.

Review Endpoints

• GET /reviews: Retrieve all reviews.
• POST /reviews: Create a new review.
• GET /reviews/{id}: Retrieve details of a specific review.
• PUT /reviews/{id}: Update a review.
• DELETE /reviews/{id}: Delete a review.

Contributing

We welcome contributions! Please follow these guidelines:

1. Fork the repository.
2. Create a feature branch (git checkout -b feature/new-feature).
3. Commit your changes with descriptive messages (git commit -m 'Add new feature').
4. Push to the branch (git push origin feature/new-feature).
5. Submit a Pull Request, and our team will review your contribution.

License

This project is licensed under the MIT License - see the LICENSE file for details.