As part of my DevOps learning journey, I built and deployed a Java application on AWS using a full 3-tier architecture. This wasn’t a “hello world” setup it mirrored real production patterns.
Architecture Overview
• Frontend: Nginx behind a public Network Load Balancer
• Backend: Apache Tomcat in private subnets with Auto Scaling
• Database: MySQL on Amazon RDS
• Networking: VPC, route tables, NAT Gateway, Internet Gateway, Bastion Host
Key DevOps Practices I Applied
• Created Golden AMIs for repeatable infrastructure
• Used Maven for builds and artifact management
• Integrated SonarCloud for static code analysis
• Implemented CloudWatch monitoring and alarms
• Automated log shipping from EC2 to Amazon S3
What This Project Taught Me
• Why private subnets matter for backend and database security
• How load balancers and auto scaling improve resilience
• How monitoring and logging are just as important as deployment
• Why DevOps is about systems thinking, not just tools
This project helped me connect infrastructure, application behavior, and security into one mental model.
I’m documenting my learning publicly as I prepare for a DevOps / DevSecOps internship.
If you’re learning too, feel free to connect or share feedback.
Top comments (1)
Keep Going