sshh12

Slack System Design: A Grounded Teardown

A reverse-engineered system design of Slack's web application, built from live network traffic analysis of the authenticated Enterprise Grid experience. 200+ API calls captured across boot, search, messaging, reactions, and navigation. Every backend service named.

Architecture Overview

┌─────────────────────────────────────────────────────────────────────────────┐
│  BROWSER (Gantry v2 SPA)                                                    │
│                                                                             │

MangaD

📌 Comprehensive Guide to Using perf for C++ Applications

Disclaimer: ChatGPT generated document.

Linux’s perf is a powerful profiling tool that helps analyze CPU usage, cache misses, function call costs, branch mispredictions, and more in C++ applications. This guide will cover:

✅ Installing and setting up perf ✅ Basic and advanced profiling commands

craimasjien

Building Bleeding-Edge Mesa RPMs on Fedora

This guide walks you through building and installing the latest development version of Mesa on Fedora using mock to generate proper RPM packages. I've been using this method since December 2025 and have perfected it along the way. I'm very satisfied with the results. Make sure to put the script itself and the .spec file in a folder and run the script.

MAKE SURE YOU READ AND UNDERSTAND THE SCRIPT, NEVER RUN SOMETHING OFF THE INTERNET WITHOUT UNDERSTANDING THE CONTENT. I AM NOT RESPONSIBLE FOR ANY DAMAGE TO YOUR SYSTEM

Who is this guide for? This guide is written for all experience levels, including beginners. Each step includes explanations of what and why, so you can learn as you go.

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asmekal

~~useful for interview

simple python

numbers

float('inf')
float('-inf')
# ^+-*/ and ><= etc work as expected, can lead to nan (e.g. inf-inf)

JeodC

Distributing Wine Bottles for ROCKNIX

If you're new to setting up Wine Bottles in ROCKNIX, then you should read qcs-wine-bottles.md first.

This guide is intended for people who wish to share their functional wine bottles with others, for easier consumption. The system used in this guide is extremely similar to PortMaster and the system used for packaging ports. There are three simple terms used throughout:

• .winecellar: This is a user-created folder that ideally lives in roms/windows. It is meant to store shared custom binaries to help with running wine bottles (such as tools/splash) and custom wine builds.
• bottle.json: This json file is similar to port.json in that it holds identifying information about the game it's bundled with. Launch scripts will use jquery to parse this file to correctly configure wine for the game.
• winecask.json: This json file is a merged combination of all bottle.json files in a GitHub reposito

burkeholland

Beast Mode

Beast Mode is a custom chat mode for VS Code agent that adds an opinionated workflow to the agent, including use of a todo list, extensive internet research capabilities, planning, tool usage instructions and more. Designed to be used with 4.1, although it will work with any model.

Below you will find the Beast Mode prompt in various versions - starting with the most recent - 3.1

Installation Instructions

• Go to the "agent" dropdown in VS Code chat sidebar and select "Configure Modes".
• Select "Create new custom chat mode file"

Pulimet

Hi All!

I've recently launched a tool that wraps many of the commands here with a user interface. This desktop application is currently available for macOS. There's a roadmap outlining planned features for the near future.
Feel free to request any features you'd like to see, and I'll prioritize them accordingly.
One of the most important aspects of this application is that every command executed behind the scenes is displayed in a special log section. This allows you to see exactly what’s happening and learn from it.

Here's the link to the repository:  https://github.com/Pulimet/ADBugger

App Description:
ADBugger is a desktop tool designed for debugging and QA of Android devices and emulators. It simplifies testing, debugging, and performance analysis by offering device management, automated testing, log analysis, and remote control capabilities. This ensures smooth app performance across various setups.

Incipiens

#!/usr/bin/env bash
# lcc - Local Claude Code launcher
# Points Claude Code at a local LLM served by llama.cpp on your GB10 device
#
# Usage:
#   lcc <modelname>           — launch Claude Code with the specified model
#   lcc <modelname> [args]    — pass additional arguments to claude
#   lcc                       — show help/launch with model if one is available
#
# Prerequisites:

valyakuttan

Setup tor proxy on Arch Linux

Copied from this article.

Installation

1. Install tor

        $ sudo pacman -S tor
        $ ## nyx provides a terminal status monitor for bandwidth usage, connection details and more.

$ sudo pacman -S nyx

UnquietCode

Lava Lamp Random Number Generator

(extracted from the now defunct SGI project at http://lavarand.sgi.com/cgi-bin/how.cgi via the magical Internet Archive Wayback Machine)

Lava Lamps can be used as a source of randomness, which can be used to establish a random number generator. The output of the RNG can then be consumed by various computer applications.

Step 1: Establish a chaotic system

(Set up Lava Lite® lamps in a machine room.)