Project Valhalla, Explained: How a Decade of Work Arrives in JDK 28

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Oracle engineer Lois Foltan confirmed that JEP 401: Value Classes and Objects will be integrated into the main OpenJDK repository and target JDK 28. The feature allows programmers to declare value classes and objects that can be optimized for performance, enabling density and locality in memory, and is currently in preview mode.

DuckDB Internals: Why Is DuckDB Fast? (Part 1)

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DuckDB is a fast in-process analytical SQL database that has gained widespread adoption due to its ease of use and performance. It can read data from various file formats like Parquet, CSV, and JSON, and execute queries directly on these files without the need for a server or cluster.

To study how chips work, MIT researchers built their own operating system

https://news.mit.edu/sites/default/files/images/202605/mit-csail-fractal.jpg
Researchers at MIT developed Fractal, a new kernel that gives a cleaner view of processor behavior, and has already found previously unknown behavior in Apple's M1. Fractal treats hardware as the object of study, allowing researchers to run experiments with minimal background noise and gain a deeper understanding of processor behavior.

So You Want to Define a Well-Known URI

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Well-known URIs work best when clients need to discover site-wide information, such as access policies or site metadata. They should be used for specific problems, not as a URL shortener or to confer legitimacy.

Zen and the Art of Machine Learning Research

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To become a successful researcher, you need to combine reading and building skills, and be willing to put in the time and effort required. A good researcher stays open-minded, refuses to let ego cloud their judgement, and is willing to learn from failure.

Show HN: Modeloop – From visual algorithms to microcontroller C code

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I found 10k GitHub repositories distributing Trojan malware

The user found 10,000 GitHub repositories distributing Trojan malware by analyzing commit patterns and using a script to filter repositories. The script found 10,000 repositories that matched the pattern of being updated every few hours with a link to a zip archive in the readme file, but the user believes there should be many more due to GitHub's large repository count.

Gribouille 0.3.0: A Grammar of Graphics for Typst

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Gribouille 0.3.0 adds guide control for hiding axis ticks and legends, and introduces a theme parameter for styling composition chrome. It also includes fixes for legend layout, stacking area charts, and other features.

Ten years of ClickHouse in open source

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ClickHouse is an open-source analytical database that was released in 2016 and has become the most popular open-source database with over 2000 contributors. It was created by a single developer who started with a custom data structure for incremental aggregation and eventually built a full-fledged database system from scratch.

From Australia to Europe, countries move to curb children's social media access

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Zero-Touch OAuth for MCP

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The Enterprise-Managed Authorization extension is now stable, allowing organizations to centrally manage authorization for MCP servers and end-users to access all connected servers through a single login. This extension addresses a major pain point in enterprise environments by providing a zero-touch setup and centralized policy control.

The AirPods Effect

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The author noticed a significant increase in people wearing AirPods during a trip to the US, feeling isolated and disconnected from others. Regular human contact is essential for our well-being, but earbuds can hinder this by creating a "Do Not Disturb" sign and reducing opportunities for casual interactions.

SMTP Relay with Web Dashboard

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SimpleRelay is a self-hosted SMTP relay with a web dashboard that routes emails through multiple upstream providers based on sender address. It's built with FastAPI, Postfix, and PostgreSQL, and supports auto-detection of SMTP settings and per-provider access control.

Ubiquiti: Enterprise NAS, Built on ZFS

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ENAS offers a private, local storage platform with performance, scalability, and simplicity, eliminating costly licensing and proprietary hardware. It integrates with UniFi for centralized management, secure access, and multi-site backup orchestration without recurring software costs.

How Japan's railways stayed one while splitting apart

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The JR mark was designed by Yōji Yamamoto in 1987 for Japan's railway companies, with a simple yet effective design that has remained unchanged for nearly 40 years. Yamamoto's design philosophy emphasized truth, reality, and honesty, resulting in a mark that has become synonymous with Japan's railways.

The room the economy can't see

There is a room in Stockholm where a bunch of kids I know hang out. It is a Sverok lokal, which is to say a little clubhouse for a gaming association, and it is exactly the unglamorous kind of good you would hope it is. Kids who do not have anywhere else to be go there. They play games, they argue about games, they sit around being teenagers together in a warm room that is not their bedroom ...

Datasette Apps: Host custom HTML applications inside Datasette

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Datasette Apps are self-contained HTML+JavaScript applications that run in a sandboxed iframe, allowing users to build custom interfaces and visualizations for their data. The plugin uses a combination of sandboxing and Content Security Policy to ensure secure execution of untrusted code.

CS 6120: Advanced Compilers: The Self-Guided Online Course (2020)

CS 6120 is a PhD-level Cornell CS course on programming language implementation covering universal compilers and research topics. The course involves reading papers and open-source hacking tasks using LLVM and an educational IR.

.gitignore Isn't the only way to ignore files in Git

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Git has three levels of file ignoring: .gitignore, .git/info/exclude, and ~/.config/git/ignore. These files allow ignoring files at repository, per-repo, and machine levels respectively.

Akse3D – open-source 3D modelling anyone can master

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Akse is a 3D modeling tool for kids and teens that combines shapes and allows export as an STL file for 3D printing. It's free, runs in the browser, and offers simple tools and real millimeter measurements for precise modeling.

Hospitals and universities repurposing drugs at lower cost

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Universities and hospitals are conducting late-stage clinical trials with lower costs, repurposing existing drugs for new uses. This "hidden" research system offers affordable treatments with huge potential, operating outside of the patent system.

Show HN: Talos – Open-source WASM interpreter for Lean

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Talos is a Lean 4 WebAssembly interpreter that enforces rules with a single codebase for evaluation and proof. It aims for full Wasm coverage with a focus on non-optimized source code semantics.

Building a robotics research setup that lives next to my desk

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A researcher is conducting independent robotic manipulation research on a tabletop setup with a single industrial-grade robot arm, two cameras, and teleoperation, aiming to test the hypothesis that a single person can achieve meaningful results with a budget of €10,000. The setup includes a UFACTORY xArm Lite 6 robot arm, Intel RealSense D405 wrist camera, and Logitech C920 webcam, with a ...

Norway greenlights first full-scale ship tunnel

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Norway will start building the first full-size ship tunnel in the world next year after the government allocated NOK 8.6bn (£671m) in its budget for the long-delayed project.

Cell-based architecture for resilient payment systems

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American Express uses a cell-based architecture to ensure high availability and low latency in its payments ecosystem. This architecture isolates failures, maintains low-latency processing, and scales capacity without expanding the failure domain.

Flexport (YC W14) Is Hiring in Indonesia, India, and Thailand

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Flexport aims to revolutionize global logistics with AI, making trade easier and driving real-world impact. The company seeks talented individuals worldwide to join its mission-driven team and help build the future of automated global logistics.

W Social, public institutions and the theater of European digital sovereignty

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The user is fascinated by W Social, a microblogging platform that claims to be Europe's alternative to X, but has discrepancies between its public image and reality. The European Commission's migration of its ATproto accounts to W Social is concerning due to W Social's lack of transparency and potential reliance on Bluesky's infrastructure.

UCCL-EP: DeepEP-style expert parallelism on any NIC, no GPU-initiated comms

· 12 min read · Cover: "Office of the American Telegraph Company, Corner of Broadway and Liberty Street, New York - Telegrams for Europe," from Harper's Weekly (1866), via the Library of Congress. In the last post we looked at how expert parallel communications kernels work. This was a story of how the original DeepEP library from DeepSeek was organized. That library relies on ...

Modos Color Monitor Pushes E-Paper Displays Further

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Modos Flow is a 13.3-inch color e-paper monitor with higher resolution and touch input, improving on the Paper Monitor Dev Kit. The Flow's crowdfunding campaign is live on Crowd Supply, with cofounders discussing engineering and lessons learned from their crowdfunding journey.

Ice water drowning survival of young patient (2025)

A young boy survived 147-minute submersion in ice water with a body temperature of 7 °C. He was resuscitated with ECMO and made a full recovery.