All Categories - zqw's notes

All Categories

Go

Go Lock Performance Traps: From sync.Mutex to Spinlock Tuning

Go Daemon Development: Graceful SIGTERM Handling and Config Hot-Reload

Production-Grade String Parsing: From atoi to State Machine

Go Generics in Practice: Pitfalls and Best Practices

Go Singleflight Deep Dive: Preventing Cache Stampede with One Line of Code

Linux

Custom Linux Distro: From Yocto Build to 60% Boot Time Optimization

NAS Disk Health Monitoring: From smartctl to Custom Agent

Compiling Nginx from Source: Understanding Module Architecture and Custom Extensions

Building a Mini Filesystem: Custom FS with FUSE + Go

Linux Boot Process: Complete Guide from Power Button to Login

Distributed Systems

Dive into K8s 02: Cilium Replaces Flannel — Goodbye VXLAN Tax, Hello eBPF Native Networking

Dive into K8s: Hand-Rolling CNI with Kind, From CrashLoop to VXLAN Packet Capture

Temporal vs K8s Controller: Declarative vs Imperative Control Plane Paradigms

Temporal in Practice: From Saga Pattern to Self-Healing Distributed Transactions

Postmortem: Debugging a Zookeeper Split-Brain in Production

Networking

HTTP/3 Benchmarks: QUIC Performance on Lossy Networks with Packet Analysis

HTTPS Handshake Optimization: Cutting Latency from 200ms to 50ms

Performance

Redis Eviction Deep Dive: LRU vs LFU vs TTL Engineering Trade-offs