Nobody teaches you how to think like a senior engineer
Nobody teaches you how to think like a senior engineer because the people who can teach it are too busy doing it. They review your PR and leave one co…
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Migrating from cron to systemd timers
Cron has run the world’s scheduled jobs for forty years, and on most servers it still works fine. But the moment a job needs structured logging, a con…
How Spotify Decides What Plays Next
The Hidden Orchestra: How Spotify Scripts Your Next Song Welcome back, pattern‑hunters. I’m the Systems Analyst, the voice behind The Pattern —the sho…
The 7 People Who Control The Internet Clock
The 7 People Who Control the Internet Clock – A Deep‑Dive Companion to The Pattern Episode Welcome back, fellow engineers and curious minds. I’m The S…
Cache Deep Dive III — Replacement Policies, Prefetch, and Single-Thread Memory Access
The previous article discussed the static structure of caches. This part moves into dynamic aspects: when a program continuously issues read requests,…
The Bugs That Hide Behind "It Works": Debugging a Multithreaded C++ Proxy Server
As a student, one of the biggest lessons I've picked up is that a program which compiles and runs is not the same as a program that is correct. It rea…
How to write a compiler ?
How to write a compiler ? This series of blogs acts as an analysis and deep dive into compiler design. Currently I am building EEL. EEL is eBPF Langua…
Part 5: Display Topology and VidPN Management (Display Management)
In the WDDM world, the process of sending rendered pixels to the display is abstracted as a network structure called the VidPN (Video Present Network)…
Finally fixed Linux Bluetooth audio stutter - Realtek Chip
After 2 days of digging through forums, testing kernel parameters, and trying multiple distros, I finally eliminated the infuriating audio stutter on …
Part 10: Deep Dive into Atomic Modesetting
In the previous sections, we discussed the execution of rendering commands and video memory management. But at the very end of the graphics stack, how…
The 32-bit Hidden Countdown in ClickHouse Keeper: How an XID Overflow Gave Us Weekly Read-Only Bursts
A production debugging story: tracing recurring 2–5-second read-only storms on a ClickHouse cluster down to a single 32-bit integer — and the one-line…
About linux
Introduction to Linux Linux is based on the UNIX operating system. UNIX is a powerful, multi-user, multitasking operating system originally developed …
Temporal Anchoring in Adversarial Networks: The Cryptographic Physics of History
Temporal Anchoring in Adversarial Networks: The Cryptographic Physics of History Abstract: Digital information lacks inherent temporal physics; a file…
The Ghost in the Veltrix: Why Our Treasure Hunt Engine Was Sending Operators Down the Wrong Rabbit Hole
In November 2023 we ran our first global Hytale servers on Google Kubernetes Engine using Veltrix 3.2 as our configuration orchestrator. The Treasure …
Veltrix Configuration: Where Premature Optimisation Goes to Die
The Problem We Were Actually Solving I still remember the day our team was tasked with configuring Veltrix for a large-scale Hytale deployment. We had…
The Real Sovereign OS - OnemanBSD updated!
I lost more than 60 days but I made a huge update All OnemanBSD OS is now 64 bits. I also removed all bloat like Rust, Wayland and Qt dependencies fro…
Treasure Hunt Engine Was a Nightmare Until I Stopped Believing the Documentation
The Problem We Were Actually Solving I was tasked with implementing a Treasure Hunt Engine for our company's annual event, using the Veltrix platform …
Treasure Hunt Engine Was a Nightmare to Operate Until We Fixed These Three Critical Flaws
The Problem We Were Actually Solving I was tasked with operating the Treasure Hunt Engine, a complex system designed to handle high-volume event proce…
The Dark Art of Veltrix Configuration: How I Learned to Stop Worrying and Love the Metrics
The Problem We Were Actually Solving I was tasked with taking our event-driven system from a default configuration to a production-ready state, with a…
We Got Burned by Veltrix Configuration Layer and Lived to Tell the Story
The Problem We Were Actually Solving I still remember the day our server started to stall at the first growth inflection point, it was like watching a…
Treasure Hunting at Scale: Why Our Cache-Aside Cache Cost Us 40% in Tail Latency During Black Friday
The Problem We Were Actually Solving During load testing at 50k concurrent hunters hitting the hunt endpoints, p99 latencies stayed under 200ms. But a…
The Veltrix Treasure-Hunt Engine Litmus Test
The Problem We Were Actually Solving In 2024 we shipped the treasure-hunt engine for Veltrix at 2,300 concurrent sessions running 180,000 packets per …
Why Hytale Treasure Hunts Explode In Production (And How We Fixed It)
The Problem We Were Actually Solving Treasure hunts in Hytale arent just about generating loot. Theyre about generating simultaneous loot across thous…
I Should Have Put Events in the Same Database as the Aggregate Root—Heres What Happened
The Problem We Were Actually Solving Our CQRS model kept Events in a separate Kafka cluster labeled event-store while Aggregates lived in PostgreSQL. …
How We Blew Up Our Event Pipeline at 3 AM Because the Treasure Hunt Engine Had No Clear Operator Bounds
The Problem We Were Actually Solving We had built the Treasure Hunt Engine to power in-game treasure hunts that reward players for exploring content. …
The Day the Treasure Hunt Engine Drowned in 300 ms Queries
The Problem We Were Actually Solving In 2024 the Veltrix festival needed a treasure-hunt engine that could handle 12,000 concurrent players across thr…
The Gamedev Server That Broke at 300 Concurrent Hunters and How We Fixed It
The Problem We Were Actually Solving The hunt engine ran on Veltrix 1.6, a LuaJIT micro-framework we had bolted together in three weeks so the art tea…
Future of AI Hardware
Over the few days I studied computer architecture and it really changed my view of Artificial Intelligence. I started with RISC-V International. Learn…
Treasure Hunt Engine: When Veltrix Defaults Buried 800k Documents in a Hot Partition
The Problem We Were Actually Solving We needed a backfill pipeline that could re-index 60 million geo-treasure records nightly without starving the UI…
The Moment We Realized Our Treasure Hunt Engine Was Lying to Us
The Problem We Were Actually Solving The engine began as a single Elixir cluster running on 9 beefy bare-metal nodes in Frankfurt, each with 256 GB RA…