Distributed System with Microservices

Overview

This project implements a distributed system based on microservices and containers using Spring Boot and Docker. The system is designed for tracking temperature and humidity readings with additional services for aggregation, configuration, and registration.

Used Technologies

• Spring Boot: Java-based framework for building microservices.
• Docker: Containerization platform for packaging, distributing, and running applications.
• Spring Cloud Config: Configuration server for managing configuration of temperature unit.
• Spring Cloud Netflix Eureka: Service registration and discovery for microservices.
• H2 Database: In-memory database for development and testing.
• Postman: API development and testing tool.

How to Run

IP Address Configuration: Set up your own IP address in the project code.

1. Run Configuration and Registration Servers

   docker-compose -f docker-compose-infrastructure.yml up -d

• Configuration Server: http://localhost:8888/application/default
• Registration Server (Eureka): http://localhost:8761/

2. Run Microservices

docker-compose -f docker-compose-services.yml up -d

Readings are stored in a database to simulate actual sensor readings:

• Temperature Microservice Database: http://localhost:8090/h2-console
• Humidity Microservice Database: http://localhost:8091/h2-console
  

3. Testing with Postman

Send a GET request to the Aggregator Microservice: http://localhost:8092/api/aggregator

4. Change temperature unit configuration

Update config file (Temperature units: K/C) on GitHub. Restart Aggregator Microservice container.

docker stop projekt3code-aggregator-service-1
docker start projekt3code-aggregator-service-1

5. Stopping the System

docker-compose -f docker-compose-services.yml down
docker-compose -f docker-compose-infrastructure.yml down