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🍱 Take My Order

Hybrid Cloud & Event-Driven Microservices Architecture

Java Spring Boot Spring Cloud

Kubernetes Docker Oracle Cloud AWS

PostgreSQL Kafka Keycloak

Actions Grafana Prometheus

Production-grade order management ecosystem developed with Java 21 and Spring Boot 3 running on a geographically distributed Hybrid Multi-Cloud Kubernetes cluster, featuring Event-Driven, DDD, and Hexagonal Architecture principles with advanced data consistency patterns.

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📖 Executive Summary

Take My Order is an advanced engineering R&D initiative demonstrating a production-grade order management ecosystem developed with Java 21 and Spring Boot 3. Unlike standard microservice templates, this project is architected to operate on a geographically distributed Hybrid Multi-Cloud Kubernetes cluster (Oracle OCI & AWS), proving the ability to orchestrate heterogeneous workloads (ARM64 & x86) in a unified network.

The system is designed with a strict adherence to Hexagonal Architecture (Ports & Adapters) and Domain-Driven Design (DDD) to prevent anti-patterns like Anemic Domain Models. It addresses the inherent complexities of distributed systems—such as network partitions and data inconsistency—by implementing robust patterns including:

  • SAGA (Orchestration) for long-running transactions.
  • Transactional Outbox for ensuring atomic writes and eliminating "Dual-Write" risks.
  • Idempotent Consumers for guaranteeing exactly-once processing.

From Infrastructure as Code (IaC) to Zero-Downtime Deployment pipelines, every component is built to simulate a real-world enterprise environment.