Benchmarking Without Lying: How wrk2 Solves Coordinated Omission for Good
Wrk2 prevents coordinated omission in load testing, revealing true latency and tail percentiles. Stop hiding service slowdowns with honest benchmarks.
Month: August 2026
WireGuard: The Three Things Nobody Explains Right (Keepalive, MTU, Roaming)
Learn why WireGuard tunnels mysteriously stop working and how PersistentKeepalive, MTU, and roaming fix NAT issues. Deep dive beyond basics.
Server-Streaming gRPC Done Right: Backpressure and Flow Control Patterns That Won’t Blow Up in Production
Master production-grade gRPC server-streaming with proper backpressure and flow control. Prevent goroutine leaks, OOM kills, and message drops.
Writing a Linux Kernel Module From Scratch: Build a Real Character Device Driver
Learn to write a character device driver as a Linux kernel module from scratch. Complete guide with real code, detailed explanations, and hands-on testing.
Stop Running a Separate Vector DB: PostgreSQL + pgvector Is All You Need for RAG
PostgreSQL pgvector handles RAG without separate vector databases. Learn index tuning, production gotchas, when to scale, and why it works.
Canary Deployments Done Right: Percentage, Header, and Geo-Based Traffic Splitting
Safely deploy new versions with canary deployments. Learn percentage-based, header-based, and geo-based traffic splitting across Nginx, Kubernetes, and Argo.
LVM Snapshots for Live Database Backups: Hot Backups Without Dropping Writes
LVM snapshots enable live database backups without downtime. Freeze writes briefly, create a snapshot, then back up while your database runs normally.
Your Lockfile Won’t Save You: Defense-in-Depth Dependency Pinning
Lockfiles alone won’t stop supply chain attacks. Learn defense-in-depth dependency pinning with checksums and digests to secure your npm pipeline.
Zero-Copy Data in Python: Stop Paying the Serialization Tax with Apache Arrow
Learn how Apache Arrow eliminates serialization overhead in Python data pipelines. Avoid costly memory copies between Pandas, DuckDB, and Polars.
Your p99 Is a Lie: The Coordinated Omission Problem Explained
Your p99 benchmarks are lying to you. Coordinated omission hides true tail latencies. Learn what it is and how to fix your measurements.