Tokyo Tech Blog

Notes on cloud computing, infrastructure, and life in Tokyo.

Understanding CDN Edge Caching

February 20, 2026

Edge caching remains one of the most effective strategies for reducing latency in global applications. In this post, we explore how modern CDNs handle cache invalidation at scale...

PostgreSQL 17: What's New

February 15, 2026

The latest PostgreSQL release brings significant improvements to query planning and parallel execution. Here's a practical guide to the features that matter most...

Kubernetes Cost Optimization

February 8, 2026

Running Kubernetes in production doesn't have to break the bank. We look at practical strategies for right-sizing workloads and leveraging spot instances...