Gandi's Major Outage: A Cascade of Failures Triggered by SSD Storage

2025-05-05

On March 9th, 2025, Gandi experienced a significant service disruption caused by an SSD storage filer failure, impacting numerous services including email. The outage lasted for hours, with some mailboxes remaining inaccessible until the following day. While no data was lost, the incident highlighted weaknesses in Gandi's redundancy and fault tolerance, including insufficient redundancy in internal monitoring, flawed VM architecture, and insufficient capacity in some redundant systems. Gandi has implemented improvements to redundancy mechanisms, enhanced monitoring, and upgraded storage systems to prevent recurrence.

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My Simpsons Fan Site, Twenty Years Later

2025-01-05
My Simpsons Fan Site, Twenty Years Later

The author excitedly republishes their Simpsons fan site, originally created twenty years ago. This isn't just a website relaunch; it's a nostalgic trip down memory lane and a heartfelt tribute to the past. The post details the site's creation and the dramatic changes in technology and the internet landscape over two decades, showcasing the author's enduring love for The Simpsons.

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Cancer Risk Decreases with Age: Study Unveils Key Protein NUPR1

2024-12-22
Cancer Risk Decreases with Age: Study Unveils Key Protein NUPR1

A new study sheds light on why cancer risk declines after age 80. Researchers found that elevated levels of a protein called NUPR1 in older mice caused cells to behave as if iron-deficient, limiting cell regeneration and thus suppressing both healthy and cancerous growth. The same mechanism was observed in human cells. Lowering NUPR1 or increasing iron levels boosted cell growth. This discovery could lead to new cancer therapies targeting iron metabolism, particularly in older individuals, and may improve lung function in those with long-term COVID-19 effects. The study also suggests that ferroptosis-based cancer treatments are less effective in older cells due to their functional iron deficiency, highlighting the importance of early intervention. Preventing carcinogenic exposures in younger individuals is even more crucial than previously thought.

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Bare-Metal Nim on Raspberry Pi: A Headless Adventure

2025-06-28
Bare-Metal Nim on Raspberry Pi: A Headless Adventure

This project details a bare-metal environment for Raspberry Pi 1/Zero using the Nim programming language. It features a cooperative scheduler, asynchronous programming model, and direct hardware access without vendor-specific APIs. The project includes memory management, exception handling, and runtime monitoring, along with comprehensive setup instructions. Future plans involve expanding to more target platforms and adding more peripheral drivers.

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Development

Zen 5's Op Cache Disabled: A Deep Dive into its Clustered Decoders

2025-01-24
Zen 5's Op Cache Disabled: A Deep Dive into its Clustered Decoders

This article delves into the instruction fetch and decode mechanism of AMD's Zen 5 processor. Zen 5 uses a unique dual-decoder cluster architecture, with each cluster serving one of the core's two SMT threads. Normally, Zen 5 relies on a 6KB op cache to deliver instructions, with the decoders only activating on cache misses. The author disables the op cache, forcing the decoders to handle all instructions, to evaluate their performance. Tests reveal significant performance drops in single-threaded mode with the op cache disabled; however, in multi-threaded mode, the dual-decoder clusters effectively compensate for the performance loss, even showing performance gains in some multi-threaded workloads. The author concludes that Zen 5's dual-decoder cluster design isn't the primary instruction source but acts as a secondary mechanism, boosting performance in high-IPC and multi-threaded scenarios, complementing the op cache for a balanced performance and power consumption.

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Hardware CPU Architecture

Go Data Structures: A Deep Dive into Memory Layout

2025-02-05

This post provides a detailed explanation of the memory layout of basic data types, structs, arrays, and slices in Go. Using illustrative diagrams, it clearly shows how various data types are represented in memory, including ints, floats, arrays, structs, and pointers. The article also specifically explains the underlying implementation of strings and slices in Go, as well as the differences between the `new` and `make` functions. This helps readers better understand the mechanisms behind Go's efficiency and gain a deeper understanding of Go's memory management.

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Development

Apple's AI Blunder: Broken Promises and Tarnished Credibility

2025-03-13
Apple's AI Blunder: Broken Promises and Tarnished Credibility

This article criticizes Apple's over-promotion of the "more personalized Siri" features within "Apple Intelligence" at WWDC 2024. The author points out that Apple only demonstrated basic features, while remaining silent on more complex and ambitious functionalities, ultimately resulting in a delay until the following year. This, the author argues, reveals not only the immaturity of Apple's AI technology but also severely damages its reputation for product quality and reliability.

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Tech

Non-invasive Analysis Unveils Secrets of the Alexander Mosaic

2025-01-27
Non-invasive Analysis Unveils Secrets of the Alexander Mosaic

This PLOS ONE study employed non-invasive analytical techniques to thoroughly investigate the world-renowned Alexander Mosaic. Researchers used portable microscopy, infrared thermography, multispectral imaging, portable X-ray fluorescence, Fourier-transform infrared spectroscopy, and Raman spectroscopy to characterize the mosaic's constituent materials, mineral components, and old protective materials. Findings revealed the geological origins of ten colors used in the mosaic and provided crucial scientific insights for its restoration. The research highlights the immense potential of non-destructive analysis in cultural heritage preservation.

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Node.js Geospatial Intelligence Server powered by Mapbox APIs

2025-06-11
Node.js Geospatial Intelligence Server powered by Mapbox APIs

This Node.js server leverages Mapbox's Model Context Protocol (MCP) to empower AI applications with robust geospatial intelligence. It provides seamless access to Mapbox's comprehensive location data, including global geocoding, points of interest search, multi-modal routing, travel time matrices, isochrone generation, and static map image creation. Whether building an AI travel assistant, logistics optimizer, or location-based recommender, this server provides the necessary spatial intelligence. Compatible with popular clients like Claude Desktop and VS Code. A Mapbox access token is required.

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Development Geospatial

Xee: A Modern XML Execution Engine in Rust

2025-03-28

The author spent two years building Xee, an XML Execution Engine implemented in Rust, supporting modern XPath and XSLT. More than just a library, Xee is a full programming language implementation, featuring a command-line tool and a Rust library, aiming to revitalize the aging XML technology. The article details Xee's architecture, implementation, and the history and current state of XML, with a call to action for developers to contribute.

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Development

EU's €70B Tech Investment Push to Bridge US Innovation Gap

2025-05-19
EU's €70B Tech Investment Push to Bridge US Innovation Gap

The European Investment Bank (EIB) plans to invest €70 billion in Europe's tech sector by 2027, aiming to close the innovation gap with the US. This initiative, dubbed TechEU, will focus on strengthening Europe's position in AI and military drones, attracting private investment (potentially unlocking €250 billion), and streamlining funding processes. EIB President Nadia Calviño highlights a willingness to take more risks, speeding up venture capital financing from 18 months to a targeted 6 months – a 'gamechanger' for startups. The initiative includes a centralized hub for funding requests and prioritizes defense and security investments, fostering a comprehensive tech ecosystem.

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Undecidability in Physics: Even a God's-Eye View Can't Predict the Future

2025-03-07
Undecidability in Physics: Even a God's-Eye View Can't Predict the Future

Could Laplace's demon predict the future of the universe? Quantum mechanics, chaos theory, and recent research on 'undecidability' suggest the answer is no. Even with perfect information, the future of certain physical systems is unpredictable. The article uses Cris Moore's pinball machine as a vivid example of undecidability, which transcends chaos, meaning some questions are simply unanswerable, even for a demon with infinite computing power. This research reveals the boundaries of physical knowledge and has profound implications for our understanding of the universe.

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TinyZero: Unlocking Reasoning in LLMs on a Budget

2025-01-25
TinyZero:  Unlocking Reasoning in LLMs on a Budget

TinyZero is a project demonstrating how to imbue large language models (LLMs) with self-verification and search capabilities at low cost, using reinforcement learning. Built upon veRL and experimenting with the Qwen2.5 series, TinyZero provides detailed instructions for installation, data preparation, and training. Even smaller models can achieve sophisticated reasoning. The project showcases the feasibility of enhancing LLMs via RL, offering a new approach to cost-effective AI research.

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Undefined Behavior in C/C++: A Tightrope Walk Between Efficiency and Security

2025-03-16

This article delves into the nature of "undefined behavior" in C/C++ and its impact on compiler optimizations and program security. It argues that undefined behavior allows compilers to generate highly efficient code in certain situations, but it can also lead to unpredictable program errors and even security vulnerabilities. Through case studies, the article explains how compilers leverage undefined behavior for optimization and how to mitigate the resulting risks. It advises developers to exercise caution, combining multiple tools and methods to ensure code correctness and security.

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Programmers Craft a Whimsical Programming Game: Droste's Lair

2024-12-17
Programmers Craft a Whimsical Programming Game: Droste's Lair

Two programmers spent two weeks developing Droste's Lair, a whimsical programming environment game. Players build and count mathematical structures through intuitive drag-and-drop interactions, using an "amb" mechanism for branching execution and recursion. The game, themed around swords and sorcery, presents challenges such as reversing list elements, generating all face card combinations, and counting ways to cover a checkerboard with dominoes. Droste's Lair cleverly blends programming and game elements, offering a novel and engaging way to learn programming and mathematical concepts.

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Optimizing GitHub Actions Static Analysis with Finite State Transducers

2025-08-18

The developer of the static analysis tool zizmor optimized its GitHub Actions template injection vulnerability detection using Finite State Transducers (FSTs). By mapping GitHub Actions context patterns to their logical "capability", FSTs reduced the representation size by an order of magnitude (from ~240KB to ~14.5KB) and proved faster and more memory-efficient than previous table- and prefix-tree-based approaches. Furthermore, the FST is pre-computed at compile time, eliminating startup costs. This improvement significantly reduces false positives and enhances detection efficiency.

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doxx: A blazing-fast terminal DOCX viewer

2025-08-18
doxx: A blazing-fast terminal DOCX viewer

doxx is a lightning-fast, terminal-native document viewer for Microsoft Word files, built with Rust. It offers beautiful rendering, smart table support, and powerful export capabilities (Markdown, CSV, JSON), eliminating the need for Microsoft Word. Features include full-text search, document outlines, multiple view modes, and planned AI integration for summarization and Q&A.

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Development

Raspberry Pi 500 Modder Successfully Adds M.2 Slot

2024-12-15

A Raspberry Pi enthusiast successfully added an M.2 slot to the Raspberry Pi 500! While the Pi 500 has the header, the slot itself is absent, leading to some controversy. The modder soldered on four tiny capacitors and used a bench power supply to power a bottom pad, enabling the use of NVMe SSDs and other PCIe devices. This modification requires excellent SMD soldering skills and has sparked discussion about the Pi 500's design choices; speculation includes reserving the feature for a future premium model.

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Revolutionary Algorithm Solves the 'Library Sorting Problem'

2025-02-20
Revolutionary Algorithm Solves the 'Library Sorting Problem'

A decades-old problem plaguing computer scientists—the 'library sorting problem' (or 'list labeling problem')—has finally seen a major breakthrough. The challenge is to devise an optimal strategy for organizing books (or data) to minimize the time it takes to add a new item. While previous algorithms had an average insertion time proportional to (log n)², the new approach comes tantalizingly close to the theoretical ideal. It cleverly combines a small amount of knowledge about the bookshelf's past contents with the surprising power of randomness, resulting in a remarkable efficiency improvement. This research has significant implications for optimizing database and hard drive file management, potentially drastically reducing wait times and computational overhead.

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Development

The Unexpected Boom of Hand-Drawn Animation: China's 'Nobody' Defies Expectations

2025-09-04
The Unexpected Boom of Hand-Drawn Animation:  China's 'Nobody' Defies Expectations

Hand-drawn animation is experiencing a surprising resurgence, with films like Japan's 'Demon Slayer: Infinity Castle' and China's 'Nobody' achieving massive box office success, outperforming some Hollywood CG animation blockbusters. This contrasts sharply with the late 1990s prediction of hand-drawn animation's demise. While the rise of CG animation threatened to overshadow traditional methods, 'Nobody'—a low-budget hand-drawn film—demonstrates the enduring power of compelling storytelling and artistic style, proving that great stories can transcend technological advancements.

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DIY Telescopes: A Beginner's Guide to Amateur Telescope Making

2025-03-13

This guide explores the world of Amateur Telescope Making (ATM), tracing its history from Russell Porter's pioneering work to the modern era. It emphasizes the rewarding aspects of building your own telescope: the satisfaction of crafting a tool for celestial observation, learning about optics, and the pride of accomplishment. The guide covers mirror grinding, optical testing, and telescope assembly, providing numerous resources and links, making it ideal for beginners.

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Hardware telescope making

California's Record-Breaking VPP Test: 100,000 Homes Power the Grid

2025-08-10
California's Record-Breaking VPP Test: 100,000 Homes Power the Grid

California's largest electric utilities, in partnership with Tesla and a leading solar installer, conducted a groundbreaking test of virtual power plant (VPP) technology. Over 100,000 homes contributed power from their residential batteries, delivering 535 megawatts to the state grid during peak demand—equivalent to a large hydroelectric dam. This success demonstrates the potential of VPPs to address the challenges of data center growth, heatwave blackouts, and reliance on fossil fuels. While enrollment complexities remain, VPPs are poised for rapid expansion, offering a cost-effective and cleaner energy solution for California and beyond.

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Dropbox Unveils 7th-Gen Server Hardware: A Giant Leap for AI

2025-08-11
Dropbox Unveils 7th-Gen Server Hardware: A Giant Leap for AI

After fourteen years of evolution, Dropbox's infrastructure has grown from a handful of servers to one of the world's largest custom-built storage systems. Their seventh-generation hardware platform (Crush, Dexter, Sonic, and GPU platforms Gumby and Godzilla) boasts dramatically increased storage bandwidth, effectively doubled rack power, and a next-gen storage chassis minimizing vibration and heat. This leap forward enhances efficiency, capability, and scalability, powering AI products like Dropbox Dash. Close collaboration with suppliers and a product-first, co-design approach leveraging emerging technologies (like SMR drives and GPU accelerators) resulted in significant performance and efficiency gains, setting the stage for future growth.

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Hardware Server Hardware

Sustainable Router Dev Kit Uses Recycled Fairphone 2 Hardware

2025-03-06
Sustainable Router Dev Kit Uses Recycled Fairphone 2 Hardware

Belgian company Citronics has created a sustainable router development kit using the mainboard of the discarded Fairphone 2 smartphone. The kit, based on a Qualcomm Snapdragon 801 processor, features Ethernet, USB ports, and leverages the phone's existing 4G LTE, WiFi, and Bluetooth connectivity. Citronics calls this a "Circular Microcomputer," focusing on sustainability and using parts from e-waste. Pre-loaded with Alpine Linux, it also supports other Linux distributions. Citronics also partners to create custom gateways based on the Fairphone 2, used in applications like residential heating optimization and machine vision education. The dev kit, priced at €150, is aimed at professional prototyping and R&D, not consumers. Antennas are not included.

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From Zero to Hero: A Freelancer's 2-Year Client Acquisition Journey

2025-02-25
From Zero to Hero: A Freelancer's 2-Year Client Acquisition Journey

A freelancer shares their two-year journey from landing their first client to building a small software services business. The article details their strategies for resume optimization, crafting a concise self-introduction, timing their job search, and utilizing productivity tools. They highlight the importance of quantifying achievements, preparing a two-minute self-introduction, targeting key hiring months, and leveraging tools to boost efficiency. Their progression from a two-year search for the first client to securing new clients in six months and then six weeks showcases valuable lessons for fellow job seekers.

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Building a Cloud from Scratch: Automation at Scale

2025-03-24
Building a Cloud from Scratch: Automation at Scale

This blog post details Railway's journey in building their own cloud infrastructure from the ground up. Their first hurdle was mapping physical hardware to OS-visible device names. They leveraged the Redfish API to gather hardware information and automated configuration using MetalCP and Temporal workflows. For OS installation, they cleverly combined Pixiecore, the Debian Installer, and Claude AI for one-click deployment. Finally, they built a highly reliable L3 network using BGP unnumbered and FRR, achieving scalability and automated management.

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Tech

Tilf: A Lightweight Pixel Art Editor

2025-08-12
Tilf: A Lightweight Pixel Art Editor

Tilf is a simple yet powerful pixel art editor built with PySide6, designed for creating sprites, icons, and small 2D assets. It features essential tools, live preview, undo/redo, and export options. Unlike many alternatives, Tilf requires no account registration or email and runs on Windows, MacOS, and GNU/Linux. Developed in spare time, the code could be improved, and contributions are welcome.

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Development

Minecraft 25w03a Snapshot: Game Testing Gets a Huge Update

2025-01-31

The Minecraft 25w03a snapshot is out, bringing a massive update to the game testing system! Game tests are now accessible via datapacks using a new test command. You can run block-based tests with the new test block or create more versatile tests using code in mods. This update also includes numerous technical changes, such as updated datapack (63) and resource pack (48) versions, and a new game test main entry point. Additionally, many bugs have been fixed, and improvements have been made to entity data, item components, and resource packs.

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The Bitter Lesson: A Paradox in AI Development

2025-08-02
The Bitter Lesson: A Paradox in AI Development

Rich Sutton's "bitter lesson" posits that general methods leveraging computation are ultimately the most effective. This article explores this idea's manifestation in fields like Go, chess, speech recognition, and computer vision, and its challenges in enterprise applications. While massive computation yields breakthroughs in some areas, the article highlights limitations in data quality and clearly defined objectives, arguing that efficient specialized models sometimes outperform general-purpose ones, and that computational resources aren't always the optimal solution.

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AI
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