November 18, 2025

Opencode

Opencode is a terminal-based AI assistant that lets you chat with multiple models from a single interface, without switching to applications like Claude Code, Codex, gemini cli, or managing multiple subscriptions. Read more

#Go | #Logging

October 14, 2025

Go Context Logger

Go’s log/slog package can automatically print keys from the passed context using slog.InfoContext. Read more

#TIL | #Kubernetes

February 20, 2024

Kubernetes Downward API

Demonstrates using the Kubernetes Downward API to inject resource-derived env vars like GOMAXPROCS without hitting the API server. Read more

#TIL | #Linux

January 22, 2024

journald RateLimitBurst

Introduces journald RateLimitBurst/Interval, why throttling noisy logs matters, and how to scope limits per unit. Read more

#linux | #system-performance-book

October 20, 2021

System Performance - Chapter 4

Covers chapter 4 topics: static vs dynamic instrumentation, profiling vs tracing, and expected sampling overheads. Read more

#linux | #system-performance-book

October 13, 2021

System Performance - Chapter 3

Summarizes chapter 3 Q&A on OS terminology, process/thread differences, memory management, and kernel duties. Read more

#linux | #system-performance-book

October 4, 2021

System Performance - Chapter 2

Answers Systems Performance chapter 2 exercises, clarifying metrics like IOPS, utilization, and troubleshooting methodologies. Read more

#TIL

September 13, 2021

What is MTU

Defines MTU fundamentals, fragmentation rules for IPv4/IPv6, and how Path MTU Discovery finds the safe packet size. Read more

#TIL | #Go

July 3, 2021

go tool dist list

Shows how go tool dist list reveals every GOOS/GOARCH combo so you can cross-compile with confidence. Read more

#Go | #profiling | #benchmarks

May 28, 2021

Go Performance Tools Cheat Sheet

Reference tour of Go benchmarks, pprof, tracing, flame graphs, and comparison workflows using a demo repo. Read more