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Solving the Equality Delete Problem in Apache Iceberg: RisingWave's Approach

2025-08-13
Solving the Equality Delete Problem in Apache Iceberg: RisingWave's Approach

Apache Iceberg has become a hot topic in data infrastructure, but real-time data streaming presents challenges. Mainstream systems don't natively support writing Change Data Capture (CDC) directly into Iceberg. This article delves into Iceberg's two delete mechanisms: position delete and equality delete. Equality delete is suitable for streaming CDC but impacts query performance, and many mainstream engines don't support it. RisingWave solves this with a hybrid delete strategy (position deletes for in-batch updates, equality deletes otherwise) and schedulable compaction, enabling an end-to-end streaming CDC-to-Iceberg pipeline successfully deployed at companies like Siemens, significantly improving data availability.

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(blog.dataengineerthings.org)
Development

Xfinity XB3 Hardware Mod: Disable WiFi, Save 2 Watts

2025-03-30
Xfinity XB3 Hardware Mod: Disable WiFi, Save 2 Watts

A user modded their Xfinity XB3 modem to save power. The XB3, provided with Comcast's cheaper Xfinity NOW service, consumes 14.9 watts. By disassembling the modem and grounding the EN pin on the TPS54328 voltage regulator, the user disabled WiFi, reducing power consumption to 12.5 watts – a 2-watt saving. While the admin page is briefly inaccessible after booting, network functionality remains unaffected.

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(gist.github.com)
Hardware hardware mod power saving

Fiwix: A Lightweight, POSIX-Compliant Open-Source OS Kernel

2025-02-05

Fiwix is a lightweight, open-source operating system kernel based on the UNIX architecture and fully POSIX-compliant. With under 50K lines of code, it's designed for educational purposes and hobbyists. Built as a monolithic kernel in ANSI C for the i386 architecture, it boasts compatibility with a large base of existing GNU applications. FiwixOS, a distribution based on the Fiwix kernel, includes a GNU toolchain, libraries, and other open-source software. It uses Newlib as its standard C library and Ext2 as its primary filesystem. The developers encourage users to test, provide feedback, and contribute to improve Fiwix and FiwixOS.

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(www.fiwix.org)
Development OS Kernel

Trump's 'Reciprocal' Tariffs: A Misunderstanding of VAT and its Impact

2025-02-15
Trump's 'Reciprocal' Tariffs: A Misunderstanding of VAT and its Impact

The Trump administration is again floating the idea of "reciprocal" tariffs on foreign countries. This plan, ostensibly a response to foreign tariffs and non-tariff barriers, fundamentally misunderstands the Value Added Tax (VAT). The article argues that equating VAT with tariffs is wrong; VAT is border-adjusted, rebating taxes on exports and imposing them on imports, resulting in a neutral economic effect. The real impediment to US competitiveness is the complex US state sales tax system, with its cascading taxes leading to "tax pyramiding" that increases costs for US businesses. Instead of raising tariffs, the article suggests reforming the US federal tax system, such as implementing full and immediate investment deductions, to boost US manufacturing competitiveness.

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(taxfoundation.org)
Tech VAT

isd: A TUI for Effortless systemd Unit Management

2025-01-18
isd: A TUI for Effortless systemd Unit Management

isd is a terminal-based user interface (TUI) designed to simplify systemd unit management. It offers fuzzy search, auto-refreshing previews, smart sudo handling, and a fully customizable interface for both power users and beginners. Frustrated with repetitive systemctl commands? isd streamlines the process, providing a unified interface showing only relevant information and commands. Installation is easy via AppImage, Nix, or uv, making it accessible across various Linux distributions. Even if you only use `systemctl status`, isd's auto-refreshing output enhances efficiency.

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(isd-project.github.io)
Development

PgAssistant: Your PostgreSQL Performance Assistant

2025-02-12
PgAssistant: Your PostgreSQL Performance Assistant

PgAssistant is an open-source tool designed to help developers understand and optimize their PostgreSQL database performance. It offers database behavior analysis, schema optimization, and SQL query library management. Integration with OpenAI or local LLMs assists in SQL query optimization. A user-friendly interface simplifies operation, and a JSON file manages the SQL query library. It also integrates PGTune for database parameter tuning and Docker Compose file generation.

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(github.com)
Development

Microsoft Cleaning Up Legacy Drivers on Windows Update

2025-06-24

Microsoft has launched a strategic initiative to clean up legacy drivers on Windows Update to reduce security and compatibility risks. This involves periodically removing outdated drivers, ensuring the optimal driver set for various hardware and maintaining Windows security. Partners will have a 6-month window to address concerns after a driver is removed; otherwise, it will be permanently deleted. This cleanup will be a recurring process.

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(techcommunity.microsoft.com)
Hardware Windows drivers hardware compatibility

Daily Murder Mystery: Solve the Case and Save the Day!

2025-01-15
Daily Murder Mystery: Solve the Case and Save the Day!

Mystery-o-matic is a website offering free daily murder mysteries, created by two passionate individuals. Unlike typical games, its daily mysteries emphasize deductive reasoning and mimic the unpredictability of real-life scenarios, resulting in varied difficulty. Each daily mystery is procedurally generated, offering a fresh twist on traditional deduction games. The website is still in beta, so rules, interface, and design are subject to change.

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(mystery-o-matic.com)
Game mystery game daily puzzle deductive reasoning

Make Your QEMU 10 Times Faster: A Weird Trick

2024-12-17

While debugging NixOS tests, Linus Heckemann discovered painfully slow data copying times (over 2 hours) in a QEMU virtual machine. Performance analysis with `perf` revealed that QEMU's 9p server used an inefficient linked list (O(n) complexity) for file lookups. By switching to a hash table provided by glib (O(1) complexity), he reduced the test time to 7 minutes and successfully contributed the optimization to the QEMU project.

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(linus.schreibt.jetzt)
Development 9p protocol

Spaceballs 2: Original Cast Returns for 2027 Sequel

2025-06-13
Spaceballs 2: Original Cast Returns for 2027 Sequel

After a 40-year wait, Spaceballs 2 is officially a go! Mel Brooks returns as a producer and will reprise his role as Yogurt. Original stars Bill Pullman (Lone Starr) and Rick Moranis (Dark Helmet) are also back. New additions include Keke Palmer and Lewis Pullman (Bill Pullman's son), playing Destiny and Starburst respectively. The film, described as a 'non-prequel, non-reboot sequel part two with reboot elements,' is slated for a 2027 release.

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(www.ign.com)
Game Spaceballs 2 Mel Brooks Sci-fi Comedy

Linux Kernel Initial Commit SHA Collision Risk

2024-12-31

Kees Cook, a Linux kernel developer, discovered a kernel documentation commit whose ID shares the first 12 characters with the initial commit in the kernel's repository. This potential collision could break various tools relying on unique commit IDs. While not yet merged upstream, this commit serves as a test case to proactively address SHA collisions and prevent future widespread issues.

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(lwn.net)
Development SHA collision

Doodle Dreams: Bringing Your Drawings to Life

2024-12-27

Doodle Dreams is an app that transforms your hand-drawn doodles into animations. Simply draw your desired characters on paper, scan them using the app, and it will recognize and create animations. You can choose different backgrounds, music, and effects to make your doodles more vivid and engaging. This app is suitable for all ages; whether you're an experienced artist or a beginner, you can easily create your own animated works.

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(doodledreams.cc)
Game animation doodle creation

EngineAI's PM01: World's First Humanoid Robot Front Flip?

2025-02-26
EngineAI's PM01: World's First Humanoid Robot Front Flip?

Chinese robotics firm EngineAI has released a video showcasing its PM01 humanoid robot performing what's claimed to be the world's first robot front flip. Unlike backflips, front flips present significantly greater challenges in terms of perception, balance, and motor control. The PM01, boasting 23 degrees of freedom and impressive torque, successfully executes the maneuver, highlighting rapid advancements in Chinese robotics. Available for $13,700, the PM01 features 5 DoF per arm and 6 DoF per leg, and its remarkably human-like gait is equally impressive.

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(newatlas.com)
AI Front Flip

PHP-ORT: Bringing First-Class ML Inference to PHP

2025-08-01

PHP-ORT empowers PHP developers to embrace the AI revolution by bringing first-class machine learning inference directly into PHP. This project provides a high-performance Tensor API and math library, with ONNX support, enabling developers to build intelligent applications without the overhead of microservices or API calls. This democratizes machine learning, allowing millions of PHP developers to participate and innovate in the AI space.

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(krakjoe.github.io)
Development

It Takes 10 Years to Become a Programming Expert: Forget Those Crash Courses

2025-07-27

This article debunks the myth of quick programming tutorials promising expertise in hours or days. The author argues that true programming mastery requires at least ten years and 10,000 hours of deliberate practice, mirroring learning curves in other fields. Examples like Mozart and the Beatles illustrate that even prodigies need years of dedicated work. The author advises aspiring programmers to choose suitable languages, prioritize hands-on experience, collaborate with others, and delve into diverse languages and low-level computer knowledge. Ultimately, consistent effort and deliberate practice, not shortcuts, are key to programming excellence.

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(norvig.com)
Development

Meta AI's Privacy Nightmare: Your Private Chats Are Public

2025-06-13
Meta AI's Privacy Nightmare: Your Private Chats Are Public

Meta's new standalone AI app is facing a major privacy backlash. Conversations with the AI, including text, audio, and images, are publicly shared by default, unbeknownst to many users. Sensitive information, such as tax evasion inquiries, family members' potential involvement in crimes, and even home addresses and court details, have been exposed. Meta has not commented. This highlights a significant design and security failure by Meta and serves as a stark warning about the risks of publicly sharing AI conversations. Despite only 6.5 million downloads, the negative impact is spreading, fueled by online trolling.

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(techcrunch.com)
Tech Privacy Leak

Sophisticated Phishing Attack Leverages VPN Access

2025-01-29

The University of Toronto's Computer Science department was hit by a highly sophisticated phishing attack. The attacker spoofed a departmental email address, successfully phishing a user's password. Alarmingly, the attacker used the stolen credentials to quickly register the user for the department's VPN, then used the internal-only SMTP gateway to send spam. This demonstrates pre-attack reconnaissance of the target's VPN and email environment, highlighting increasingly advanced attack techniques and the need for robust cybersecurity defenses.

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(utcc.utoronto.ca)
Tech VPN exploitation

Six Months In: My Year-Long Project on Building Friendships

2025-03-23
Six Months In: My Year-Long Project on Building Friendships

This post summarizes the author's sixth month of a year-long project focused on building and maintaining friendships. Key takeaways from eight books on the subject include: strong friendships improve health, even weak ties are valuable for opportunities, building friendships requires significant time investment, genuine interest is more effective than self-promotion, and declining social capital poses risks. The author found the topic far more complex than anticipated and will share personal reflections next week.

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(www.scotthyoung.com)
Misc social skills

Missile Strike Confirmed as Cause of Azerbaijan E190 Crash

2024-12-28
Missile Strike Confirmed as Cause of Azerbaijan E190 Crash

An Azerbaijan Airlines Embraer E190 passenger plane crashed on Christmas Day, killing 38 people. The Azerbaijani government confirmed that a Russian Pantir-S1 surface-to-air missile caused the crash. The aircraft was attempting an emergency landing when it went down. Russian air defense forces were engaged in shooting down Ukrainian drones in the area, but civilian airspace wasn't closed. Despite pilot requests for an emergency landing, the plane was denied access to Russian airports and crashed near Aktau, Kazakhstan.

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(aeroxplorer.com)
Misc missile strike international incident

LangManus: An Open-Source AI Automation Framework for Multi-Agent Collaboration

2025-03-23
LangManus: An Open-Source AI Automation Framework for Multi-Agent Collaboration

LangManus is a community-driven open-source AI automation framework that integrates language models with tools for web search, crawling, and Python code execution. Developed by former colleagues in their spare time, this project aims to explore multi-agent and deep research, participating in the GAIA leaderboard. LangManus employs a hierarchical multi-agent system with roles such as Coordinator, Planner, Supervisor, Researcher, Coder, Browser, and Reporter, supporting various LLM integrations including Qwen and OpenAI-compatible models. The project is open-sourced under the MIT license and welcomes community contributions.

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(github.com)
AI AI automation multi-agent system

Forget SaaS, I'm Building an Internet Vending Machine

2025-02-22
Forget SaaS, I'm Building an Internet Vending Machine

Tired of the SaaS model, the author decided to take a different approach: building a simple 'internet vending machine'. Inspired by a real-life vending machine selling cheap alien stickers, the author aims to create a website (ThreeKindWords.com) that mirrors its simplicity, one-time transactions, low price points, and lack of customer support. The goal is a straightforward user experience with no accounts or complex processes, focusing on single transactions and easy revenue generation, much like collecting coins from a vending machine.

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(threekindwords.com)
Startup internet business model

Quickwit Acquired by Datadog: A Multi-Petabyte Search Engine's Cross-Continental Journey

2025-01-10
Quickwit Acquired by Datadog: A Multi-Petabyte Search Engine's Cross-Continental Journey

Quickwit, a multi-petabyte scale open-source search engine built by three engineers over four years across three continents, has been acquired by Datadog. This post details Quickwit's journey from an idea conceived in a Parisian gyoza restaurant to its acquisition. Overcoming challenges of cross-border collaboration, they built a highly efficient and manageable search engine using Rust, partnering with companies like Binance and Mezmo to achieve success. The acquisition marks a new chapter for Quickwit, which will continue as an open-source project under the Apache License 2.0, bringing new features.

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(quickwit.io)
Development

Greenland Ice Sheet Crevasses Accelerate Melt: A Rising Sea Level Threat

2025-02-10
Greenland Ice Sheet Crevasses Accelerate Melt: A Rising Sea Level Threat

Numerous studies in recent years highlight the accelerating role of crevasses in Greenland's ice sheet, significantly contributing to ice calving and exacerbating sea level rise. Researchers have employed diverse methods, including satellite imagery, airborne LiDAR, and field observations, to investigate crevasse formation, expansion, and hydrological impacts. Findings reveal that crevasses not only compromise ice sheet stability but also expedite meltwater drainage, further accelerating ice melt. This poses a significant challenge to the future of the Greenland Ice Sheet and presents a major threat to global sea level change and coastal safety.

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(www.nature.com)
Tech Greenland Ice Sheet ice melt sea level rise

Say Goodbye to ERB: Crafting Email Templates in Pure Ruby with Phlex

2025-03-03
Say Goodbye to ERB: Crafting Email Templates in Pure Ruby with Phlex

Tired of using ERB for email templates in Rails? This article demonstrates how to use Phlex, a Ruby library, to write HTML email templates in pure Ruby, eliminating the hassle and inefficiency of ERB. The author details the steps to migrate from ERB to Phlex, including creating Phlex views and layouts, and using roadie-rails for inline styles, ultimately achieving the elegant goal of a zero-ERB Rails application. The article also includes complete code examples and test cases to help readers get started quickly.

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(camillovisini.com)
Development Email Templates

Seven Years Post-Google: Selling My Company & Becoming a Dad

2025-02-04
Seven Years Post-Google: Selling My Company & Becoming a Dad

Seven years ago, Michael Lynch left his job at Google to bootstrap his own software company. This year's update covers the sale of his million-dollar-revenue remote computer control device company, TinyPilot, for $600k, and the arrival of his first child. The sale allowed for better work-life balance; he's since refined a previous blogging course, started a book on writing for developers, and explored new technologies like Nix, htmx, and Zig, improving his fuzz testing workflow with Nix. He remains enthusiastic about independent founding.

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(mtlynch.io)
Startup

ChatGPT Saves the Day: AI Diagnosis Prevents Stroke

2025-09-14
ChatGPT Saves the Day: AI Diagnosis Prevents Stroke

The author, experiencing headaches, eyelid drooping, and other symptoms, consulted ChatGPT. Initially, ChatGPT suggested benign causes, but as symptoms worsened, it prompted the author to check pupil size. Unequal pupils led ChatGPT to urgently recommend an ER visit. A carotid artery dissection was diagnosed, and timely treatment prevented a stroke. The article highlights AI's potential in medical diagnosis while raising concerns about its future impact.

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(benorenstein.substack.com)
Tech Medical Diagnosis Stroke Prevention

Link Rot Investigation: Personal Blogs Face High Risk

2024-12-24
Link Rot Investigation: Personal Blogs Face High Risk

Blogger Wouter Groeneveld conducted a link rot investigation on his blog, Brain Baking. He checked 3179 external links across 453 posts, discovering approximately 7% were broken, with 404 and 403 errors being the most prevalent. Broken links stemmed primarily from personal blogs, followed by corporate sites and other resources. The findings highlight the lower stability of links on personal websites and a high link rot rate in academic papers. The blogger recommends website builders use permalinks, linkers carefully choose their targets, and consider local storage for external resources.

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(brainbaking.com)
Misc link rot

HBO Max to Crack Down on Password Sharing

2025-08-08
HBO Max to Crack Down on Password Sharing

Warner Bros. Discovery (WBD) is getting aggressive in its efforts to curb password sharing on HBO Max. The company's head of streaming and gaming announced plans to close loopholes by the end of 2025, impacting financials starting in 2026. Following Netflix's lead, WBD aims to significantly boost revenue by cracking down on this practice. Months of testing to identify legitimate users precede a tougher stance, with more forceful measures rolling out in Q4. Despite this, HBO Max added 3.4 million streaming subscribers this quarter, reaching a total of 125.7 million.

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(deadline.com)
Tech password sharing

Revitalizing Your Mavericks: Giving an Old System New Life

2025-08-21

This guide shows you how to breathe new life into your aging OS X Mavericks system. It involves a simple script to update the system, replacing the outdated browser with a modern Firefox (Firefox Dynasty), using Aqua Proxy to fix HTTPS compatibility issues, adding new emojis, and setting up Time Machine backups. The guide also instructs users on deleting unwanted pre-installed apps such as Chess, iTunes, and iBooks for a personalized experience. The entire process is straightforward, making your Mavericks system run smoother and more tailored to your needs.

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(mavericksforever.com)
Development
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