What Really Happens When You Run a Program?
A plain-English walkthrough of how the OS turns a file into a process, gives it memory, runs it on the CPU, and still keeps control.
Posts
How to Create an AI Agent: A Calendar Planning Example
A beginner-friendly guide to creating AI agents with LangGraph and the OpenAI API, using a calendar planning system as the example workflow.
Redis Big Key Outage Took Down a Microservice System
A Redis big key outage case study: how one growing key caused slow reads, Redis timeouts, queued requests, database fallback load, and cascading failure.
Goroutine Leaks in Go and How to Prevent Them
Learn how goroutine leaks happen in Go services and how to prevent them with context cancellation, buffered channels, and clear goroutine ownership.
Go Counting Semaphore Pattern
Learn the counting semaphore pattern in Go using buffered channels to limit concurrent work, protect services, and keep worker pools predictable.
Codex Skills in Practice
Learn how Codex skills turn repeated AI coding tasks into reusable workflows with a practical example for generating blog assets in a repository.
Istio Ambient Mesh, Explained Simply
Learn how Istio ambient mesh works, when to use ztunnel and waypoint proxies, and how it compares with sidecar-based service mesh architecture.