🌩️ Cloud Architecture Lab

Welcome to Cloud Architecture Lab – a hands-on collection of projects, utilities, and notes tailored for cloud-native engineers, platform builders, and interview preparation. This repository showcases practical design patterns, DevOps automation, and system architecture examples.

🔧 What's Inside

📌 1. Sample Projects

• Multi-Tenant Microservices System (Java + Spring Boot + Kafka)
  A simplified backend system showing tenant isolation, async communication via Kafka, and scalable REST endpoints.

• Cloud-Native App with AWS Lambda + EventBridge
  Demonstrates event-driven design, decoupling, and serverless architecture patterns.

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📦 2. Reusable Terraform Modules

• EKS + Fargate Module
  Production-ready Terraform module to bootstrap secure, scalable Kubernetes clusters using Fargate on AWS.

• Secret Rotation Utility
  Template to implement Secrets Manager with auto-rotation and IAM access controls.

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☁️ 3. AWS Utilities Toolkit

• Cloud backup templates (EBS snapshot automation)
• SSM automation scripts
• Secret rotation flows

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📚 4. Interview Notes & Cheatsheets

• aws-well-architected.md – Breakdown of AWS WAF pillars
• java-design-patterns.md – Key Java patterns & concurrency concepts
• system-design-questions.md – Common architecture questions with diagrams
• observability.md – Logging, metrics, tracing cheat sheet

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👤 About

Maintained by Ravi Ranjan Kumar – Principal Engineer | Platform Architect | AWS + Java Expert.
🔗 LinkedIn • GitHub

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🛠️ Contributions

Feel free to fork, use, or suggest improvements via pull requests. Let's build better systems together!