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.

Leave a Trace

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Leave a trace of your presence on the internet by commenting, sharing feedback, or providing solutions to help others. This adds humanity and highlights useful information in a vast digital space.

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

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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.

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.

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.

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.

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.

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.

"No Feigning Surprise"

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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.

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.

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

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NASA picks Eric Schmidt's rocket company for Mars mission

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NASA hired Relativity to build a spacecraft to study Mars' atmosphere, with data to aid future landers and astronauts. The mission, set to launch in 2028, is a public-private partnership with Relativity handling infrastructure and NASA the science.

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.

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.

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.

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.

.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.

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.

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.

The room the economy can't see

A room in Stockholm for kids to hang out exists due to a grant, but it's a rare example of a "third place" where people can socialize without paying. The economy fails to fund such spaces because unpaid activities like visiting grandma or running a club don't pay rent.

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.

If your product is Great, it doesn't need to be Good (2010)

The author argues that successful products focus on a few key features, ignoring others, to create a simple and compelling experience. This approach is seen in products like the original iPod and Gmail.

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.

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.

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.