Amazing project. Use notepad as a ASCII display to render and play animation of an object to do ray tracing. One of cool thing is it search memory of a process, find a pattern to find the memory address that hold NotePad display text, and change it constantly to simulate re-rendering.

Apple Photos keeps photo metadata in a SQLite database. It runs machine learning models to identify the contents of every photo, and separate machine learning models to calculate quality scores for those photographs. All of this data lives in SQLite files on my laptop

HTTP/3, QUIC, user-space TCP/IP stack. What is the meaning of development a tcp/ip stack in user-space? How does kernel handle incoming package. How does it know where to send package to.

This guide is a complete, summarized WebGL tutorial, with tiny interactive demos in each chapter. Starting nearly from scratch, you’ll be able to create your own 3D interactive scenes without needing to use any library or framework: only vanilla JS & WebGL. My goal was to gather all the information and tricks about WebGL I found scattered everywhere, and present them in a short and helpful way.

You don’t truly understand something until you’ve implemented it yourself, so I wanted to write an article that lets people play around with a simple thread implementation. In this post, we’ll implement simple threads in a normal C program (not an operating system).

Troubleshooting is both a science and an art. The first step is to make a hypothesis about why something is behaving in an unexpected way, and then prove whether or not the hypothesis is correct. If the issue is too vague, then you need to brainstorm in order to narrow down the problem—this is where the “artistic” part of the process comes in. Another similar story from Twitter: Hunting a Linux kernel bug

What the agent is, how to use it, and how it works to keep your keys safe, how it works. reduce your risk when using agent forwarding, and an alternative to agent forwarding that you can use when accessing your internal hosts through bastions.

Prometheus is a monitoring and alerting system. It is very different from traditional system alerting where it scrape metric instead of you writing metric to it. When scraping, the data is pre-aggreated, so the way to query it is more about trending than individual event. Being different, it has a high learning curve.

The second of a four-part blog series documenting the different structures and stages of the firmware update. Looking in the blackbox, reverse engineer both of protocol to update and firmware format

Useful if you already use ZSH.