Server System Design for Withstanding Traffic Spikes - Coupon Issuance Service
Through the implementation of a first-come, first-served coupon system, you will solve key real-world backend challenges such as concurrency issues, data consistency, and handling peak traffic. By writing the code yourself, you will identify problems and master essential practical skills, including synchronous/asynchronous processing and queue management. This project-based course is designed to help junior developers and job seekers gain hands-on experience.
805 learners
Level Basic
Course period Unlimited
[New Course Launch] From Service Deployment Automation to Incident Response, 70% Off
Hello, this is Hanjogak.
Following my experience building and designing services, I’ve released a new course covering the process of automating deployments and investigating issues in production.
From Automating Service Deployment to Responding to Operational Incidents — GitOps, Observability, and AI Agents
In this course, you’ll deploy a Spring Boot SNS app to a local Kubernetes cluster and practice the workflow from code changes through deployment and incident analysis.
Automating Deployment with GitHub Actions and Argo CD
Monitoring service status with Prometheus and Grafana
Investigating the Causes of Incidents Using Logs and Traces
Reviewing the AI agent’s analysis results against observability data
Recommended for those who want to expand what they learned in the previous course into deployment and operations.
If you have experience building basic APIs with Java and Spring Boot, you can review the course content through the course introduction and preview.
To celebrate the launch, it's 70% off until October 29.
Regular price: 66,000 won → 19,800 won
Explore the new course curriculum and preview
If you’re considering deployment and operations as your next learning goals, feel free to take a look. I hope you’ll find it useful to apply what you’ve learned to your projects.
Thank you!




