Saku: How I Went From Per-Line KV to 8M Writes/sec in One Week (While Learning C++)
Initial scope was simple: just make it fast. No fsync, no fancy durability. Just raw speed. I was bored. Asked AI "what should I build in C++?" It s…
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34.8k Stars Won't Put GTA VI on Your PC. Here's What AnyPS5 Is Actually Doing
Seeing GTA VI run on a PC before the official port would be a spectacular way to end the console exclusivity argument. So a project that promises to…
The Flush Printed a View After the Owner Died
A green debug run does not prove a view owns its bytes. Release can reuse that stack slot before the flush reads it. I start every split-brain crash…
Build the Patch as a Stranger: A Consumer-Link Gate for C++ Codegen
A packaging job can fail on a Thursday morning while the eval board stays green. In that pattern, the candidate patch repairs normalize() inside one…
UE5 Shader Optimization: Materials, Custom HLSL, and Global Shaders with RDG
When a material graph grows in Unreal Engine 5, it is tempting to ask: would writing HLSL directly make it faster? Would implementing the shader in…
The rules I build by
New here? Start with the overview . Before the rules, a debt. These are not mine alone; they are the labor of a whole career, and every one of them…
Building a MIL-STD-188-110 HF Modem in Modern C++: An Introduction
A weekly deep dive into a fixed-frequency serial-tone waveform, one block at a time. High-frequency (HF) radio is the communications system that ref…
DSCI pipeline to build c++ project using cmake
📁 Repository layout . ├── .dsci/ │ ├── jobs.yaml # pipeline definition │ └── build_job/ # ── Job 1 – Build & package │ ├── config.yaml # default…
Two Locks on a Green Build: Prompt Hashes and RSS Caps for AI C++ Evals
A patch landed with every assertion green. The return values matched the golden file. Then a latency dashboard moved: an inner loop that once touche…
I could not understand Express, so I wrote my own
Middleware chaining made no sense to me, so I rebuilt it in C++. A year later the profile said the slowest thing in my server was a map I rebuilt on…
When should a QWidget animation stop its timer?
A decorative animation can sit outside a scroll viewport while its widget still reports isVisible() == true . A timer that only checks that property…
Store Load Reordering: x86 vs ARM64, and the Bug Intel Was Hiding
Here is a bug report that keeps recurring, in different words, every time a team moves to ARM: "the same code works on our Intel CI and on the devel…
Nimmake — The Blazing-Fast Build Tool Built for Embedded Development
🚀 Nimmake — The Blazing-Fast Build Tool Built for Embedded Development Say goodbye to complex Makefiles. Embrace a modern MCU build experience. Nimm…
The Map Dropped a Key When Two Expiry Times Matched
A C++ map can drop a live cache entry. One <= in a comparator is enough. I forced a timestamp tie and watched a key vanish. Would you have caught…
How to Change Themes with the Operating System in a Qt App
It turns out, I got the timeline wrong. The first bit of work I did on Packet Sender was to test light mode. See, Dan Nagle, creator and maintainer…
AArch64 Register Conventions: What Survives a Function Call—and Why
What happens to a register when you call a function? On AArch64, the answer isn't "the CPU saves it." When you call a function, the CPU doesn't look…
Lightweight, native HTTP client built in C++20 — a fast, local-first alternative to Postman and Insomnia
The project is actively developed, and I'm committed to supporting anyone who tries it. If you encounter any issues, I'm glad to help, and any feedb…
Auditing Agent Patches: Property Checks, Fixture Locks, and Expiring Flaky Freezes
I review agent patches as an auditor, not a reader. A reader asks whether the code is readable. An auditor asks what the patch promised and how a vi…
A Green Suite Can Still Lie: Mutation-Test Your Fixtures Before You Trust an Agent Patch
An agent patch can pass every fixture in your repository and still be wrong. The fixtures are part of the oracle, and fixtures can be lazy. If the e…
Building Cross-Platform Desktop Apps with Qt and QML in 2026
Building one desktop application that runs natively on Windows, macOS, and Linux from a single codebase is exactly what Qt was designed for. In 2026…
Qt 5 to Qt 6 Migration Guide for 2026
Qt 6 is a major version, and migrating a real Qt 5 application to it is more than a recompile. The framework was modularised, the build system shift…
Properties First, Fixtures Second, Flakes Never: A Test Contract for Agent Patches
An agent patch is a hypothesis. A test suite is the only evidence a reviewer gets. Most suites fail at that job in three reproducible ways: assertio…
Hardware Abstraction for Robotics: Connecting Sensors and Actuators
Hardware Abstraction for Robotics: Connecting Sensors and Actuators Introduction Robots interact with the physical world through hardware. Sensors p…
The 3% Drop That Only Showed Up on a Clean Server: A Debugging Retrospective
My forwarder lost 3% of its messages. My laptop reported zero. CI reported zero. Staging lost thousands every hour. I blamed the network. I blamed t…
Mutation Testing as a Merge Gate for Agent-Written Tests
An agent patch that passes its own tests is a baseline, not a verdict. The same model wrote the code and the tests, so both share the same blind spo…
The Agent's Tests Passed. Mutation Testing Showed 2 of 4 Faults Survived.
The agent patch passed the gates I ran on it. Its unit tests were green, fixtures matched, nothing was flaky. Then I seeded four faults into the imp…
The Fix That Passed Review and Crashed in Release
The fix passed review. It still crashed in release. The reviewer was never tested. The reviewer was me. And an AI model. We both approved the same w…
The Coverage Loop: Turning Free AI Tokens into Verified C++ Tests
Unit tests are boring. Coverage is not optional. I asked a free AI model to write my tests. It failed. Then I built a feedback loop. Here is the res…
My GPU Database Lost to a Single CPU Thread. The Bug Was One Constant, 128x Too Small
This is a submission for DEV's Summer Bug Smash: Smash Stories powered by Sentry . I maintain a GPU SQL engine — a DuckDB community extension that r…
Flutter FFI: Integrating Native C/C++ Libraries
Flutter FFI: Integrating Native C/C++ Libraries Flutter applications sometimes need functionality that is already implemented in native code. Exampl…