leandrocotsa/gama-microservices-direct

Microservices-based with syncnhronous communication e-commerce platform

This is the source code for a test application built for the purpose of my master's dissertation. This is one out of 3 different versions of the same application built for research purposes. This one features a microservices-based application with direct synchronous inter-service communication, other is also microservices-based but uses a message-driven approach (link), and the last one follows a monolithic approach (link).

Stacks

A Docker Swarm cluster is used and it is composed of 4 stacks:

• Main application stack, composed of:
  • Inventory Serivce
  • Order Service
  • Payment Service
  • Product Service
  • Payment Service
  • Promotion Service
  • Review Service
  • Shopping-cart Service
  • User Service
  • API Gateway
  • MySQL database

The main business services were built using Java and Spring Boot version 2.4.4.

• Monitoring stack

  • Grafana
  • cAdvisor
  • Prometheus
  • Node exporter

• Logging & Tracing stack

  • Elastic Search
  • Logstash
  • Kibana
  • Zipkin

Architecture

The next image represents an overview of the architecture of the main application stack, with the main business services.