Featured Posts
Check out my latest articles and tutorials.
Backend
RAG Experience: Building Long-Term Memory for Characters
A practical write-up on using RAG to help characters remember previous conversations.
June 5, 2026
Infra
AWS Systems Manager (SSM) Guide
A practical guide to accessing EC2 securely without SSH using AWS SSM
May 21, 2026
Infra
Solving CORS Errors in CloudFront + S3 with Signed Cookies
I will discuss the CORS troubleshooting process encountered when adopting CloudFront Signed Cookies.
January 13, 2026
Backend
Handling 2,000 TPS: Payment System (Part 3)
Optimizing Consumer Processing: Connection Pooling & Sharding for Faster Checkout
October 3, 2025
Backend
Handling 2,000 TPS: Payment System (Part 2)
Let’s explore how to improve the system architecture to handle all TPS stably.
August 27, 2025
Backend
Handling 2,000 TPS: Payment System (Part 1)
We will test how much traffic the system can handle in its unoptimized state and explore why studying the architecture is important.
August 23, 2025