Watching Go's new garbage collector move through the heap

Go 1.26's new garbage collector, Green Tea, improves performance by reducing cache misses and increasing speed, but its impact on L3 cache is initially misleading. By analyzing L1 cache metrics, we see that Green Tea reduces L1 cache misses and improves overall performance, but Go still struggles with memory fragmentation due to its non-moving collector.

Launch HN: Rise Reforming (YC S26) – Turning Waste Gases into Valuable Chemicals

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Rise Reforming converts biogas from wastewater, farms, and landfills into valuable chemicals, reducing reliance on fossil fuels and supply chains. Their technology fits in a shipping container, allowing for rapid deployment and production of chemicals like DME, methanol, and DMC.

Self-contained highly-portable Python distributions

This project creates self-contained Python distributions that can run on any system with minimal dependencies. The distributions can be customized and repackaged by downstream tools like PyOxidizer and PyOxy, which add functionality to the Python interpreter.

Glue bonds to nonstick surfaces and wipes clean with ethanol

https://s7d1.scene7.com/is/image/CENODS/News--Powerful-adhesive-binds-to-Teflon--can-be-wiped-clean---534105?$responsive$&qlt=90,0&resMode=sharp2&fmt=webp
Researchers developed a small-molecule glue called CyclicFP-fmoc that bonds strongly to nonstick surfaces and can be easily removed with ethanol. The adhesive combines high strength, ductility, and washability, making it reusable and recyclable.

The computer that helped win World War II

https://spectrum.ieee.org/media-library/black-and-white-image-of-two-women-operating-a-wall-sized-1940s-computer.jpg?id=67520993&width=1200&height=750
In 1941, British codebreakers discovered a new German encryption system called Tunny, which was more advanced than Enigma, and they built a machine called Colossus to break the code. Colossus, the world's first large-scale programmable electronic digital computer, was built by engineer Tommy Flowers and helped the Allies decipher encrypted messages, saving countless lives and shortening World War II.

Ray tracing massive amounts of animated geometry using tetrahedral cages

https://gpuopen.com/images/rt_massive_workflow_v2.aZxpk6Oo.jpg
Researchers at AMD developed a method to efficiently animate massive amounts of geometry using tetrahedral cages. This approach decouples animation cost from triangle count, allowing for real-time rendering of complex scenes with many animated objects.

Exploiting Volvo/Eicher's fleet platform to gain control over all users/vehicles

https://eaton-works.com/cdn-cgi/imagedelivery/VwwCqBIYNXeyNQwEQ8uyVQ/b7d7e95c-3a3d-48e6-3162-cdd3c5299800/full
A vulnerability was found in My Eicher's APIs, allowing hackers to gain high-level access and account takeover, potentially controlling hundreds of vehicles. The vulnerability was discovered in 2025 and fixed in November 2025, but not before exposing sensitive data of 275k vehicles and 115k customers.

Bytecode-to-Source Mapping

https://tidefield.dev/images/bytecode-vm-source-lines.png
The user encountered a problem while working on a bytecode VM, specifically how to efficiently store and retrieve line numbers for a chunk of bytecode. They discussed two solutions: run-length encoding and a static predecessor problem solved via binary search, which can be used for both sequential traversal and arbitrary lookups.

Show HN: FeyNoBg – Automatic background removal model and training library

https://usefeyn.com/blog/feynobg/showcase/bikes-original.webp
FeyNoBg is a state-of-the-art model for automatic background removal that outperforms or closely matches the best published results on eight benchmarks. It's based on BiRefNet and uses a library called NoBg for training and running the model.

Judge Rejects Google's Attempt to DMCA Its Way Out of Being Scraped

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A judge has dismissed Google's lawsuit against SerpAPI, a company that scrapes Google's search results, citing that Google's "SearchGuard" measure is not designed to protect copyrighted content. The court ruled that Google's claims under the DMCA are subject to dismissal as they do not effectively control access to a copyrighted work.

MAI-Cyber-1-Flash inside MDASH

https://microsoft.ai/wp-content/uploads/2026/07/Cyber-1-New-Header.png
Microsoft has announced MAI-Cyber-1-Flash, a compact security model that delivers world-class performance at 50% of the cost of leading models, and Perception, an agentic security system for continuous monitoring and patching. The combined system, MDASH, uses MAI-Cyber-1-Flash to efficiently handle 90% of tasks, enabling the use of more costly models for exceptionally hard tasks, resulting in ...

Removing React.js from the codebase and adapting Htmx for UI interactivity (2023)

https://misago-project.org/media/conf/logo.3335a6d7.png
Misago's current implementation has issues with duplicated code and complexity. It can be simplified by using a JavaScript framework with server-side rendering like Next.js or Remix.run, and focusing on an API with React.js UI.

Kimi-K3 on HuggingFace

https://cdn-avatars.huggingface.co/v1/production/uploads/no-auth/T7ndyLrlZoFuMwXp3J5Sl.png
Kimi K3 is a 2.8T-parameter model with native vision capabilities and a 1-million-token context window, designed for frontier intelligence across long-horizon coding, knowledge work, and reasoning. It is the world's first open 3T-class model, released under the Kimi K3 License for research, deployment, and further innovation.

Paged Out #9 [pdf]

Paged Out! magazine Issue #9 is now available with over 70 items, articles, and artwork, and the editorial team is working on Issue #10 with a call for papers deadline of September 30, 2026. The magazine is also introducing a Patreon page to support its financial goals and making past issues available for purchase through Lulu.com.

UpCodes (YC S17) is hiring remote AE's to help make buildings cheaper

https://up.codes/img/upcodes-og-twitter-image.png
We’re looking for talented and motivated people who can help us build easy-to-use compliance and product research tools. Learn about our culture and explore open positions.

Securing Services with Rootless Containers

https://blog.coderspirit.xyz/.within.website/x/cmd/anubis/static/img/pensive.webp?cacheBuster=v1.25.0
You are seeing this because the administrator of this website has set up Anubis to protect the server against the scourge of AI companies aggressively scraping websites. This can and does cause downtime for the websites, which makes their resources inaccessible for everyone. Anubis is a compromise. Anubis uses a Proof-of-Work scheme in the vein of Hashcash, a proposed proof-of-work scheme for ...

Libsm64: Mario 64 as a library for use in external game engines

https://opengraph.githubassets.com/b2d774116d9ba4597f91028623d2cf5bf5ed24a36733190f2f9a89533b512512/libsm64/libsm64
This project provides a shared library for SM64 movement and rendering code, allowing Mario to be easily integrated into existing game engines or systems. The library loads official SM64 ROMs at runtime for asset extraction and can be built and used with SDL2 and GLEW libraries.

Show HN: Let's Seal – Let's Encrypt for document signing, free and self-hosted

https://raw.githubusercontent.com/letsseal/letsseal/main/docs/screenshots/verify.png
Let's Seal is an open standard for proving any file is real, unaltered, and sealed by a known certificate. It's free, open, and run as a public-benefit project, like Let's Encrypt for document proof.

How is the Bun Rewrite in Rust going?

https://lockwood.dev/assets/img/rust_rewrite/slop.png
The author questions the value of Anthropic's acquisition of Bun and the company's large valuation, citing a lack of release tags and increasing open pull requests. The author suspects that the cost of the rewrite is higher than claimed, with potential off-the-books expenses and ongoing Anthropic employee involvement.

First Robotic Satellite Servicer Launched

You don't have permission to access "http://www.nrl.navy.mil/Media/News/Article/4551871/robotic-servicing-of-geosynchronous-satellites-launches-into-orbit/" on this server.

Professor's invisible prompt trap catches 32/35 students cheating with AI

https://www.techspot.com/images2/news/bigimage/2026/07/2026-07-27-image-2.jpg
A professor hid white text in an assignment prompt telling AI to include nonsensical info about Madagascar. 32 out of 35 students used AI to cheat, failing the portion of their midterm.

Tokio Gives Progress, Not Ordering: Scheduling 1M Tasks

The user's Rust service experienced a memory spike due to Tokio's task scheduling, where tasks from earlier events were being started much later than expected, causing a higher-than-expected memory usage. To resolve this, the user added a Semaphore to bound the number of events that can be processed at a time, achieving event-level fairness and reducing the peak memory usage.

How real are real numbers? (2004)

https://arxiv.org/static/browse/0.3.4/images/arxiv-logo-fb.png
The discussion focuses on mathematical and physical arguments against continuity and in favor of discreteness, particularly Emile Borel's ideas. This is from a paper by Gregory J. Chaitin.

Modern email can be built from borrowed parts

https://en.andros.dev/static/img/footer/org-social.svg
The user proposes a new mail system called HMTP (Hypertext Mail Transfer Protocol) that uses HTTP and replaces SMTP's design flaws, focusing on discovery, verification, delivery, and encryption over HTTP. HMTP uses standardized technologies like WebFinger, ActivityPub, Webmention, Ed25519, and HPKE to provide a secure, decentralized, and scalable mail system with features like first-contact ...

VLC for Unity now supported on Linux

https://code.videolan.org/.within.website/x/cmd/anubis/static/img/pensive.webp?cacheBuster=1.25.0
The website uses Anubis to protect against aggressive AI scraping, which adds a Proof-of-Work load to make scraping more expensive. Users with plugins like JShelter need to disable them for this domain to access resources.

The Artist Who Colored Ghibli

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Michiyo Yasuda was a key color designer at Studio Ghibli, creating unique and nuanced colors for films like My Neighbor Totoro and Princess Mononoke. Her subtle perception and attention to detail allowed her to convey emotions and realism in Ghibli's films, making her a master of her craft.

Towards a Theory of Bugs: The Ruliology of the Unexpected

https://content.wolfram.com/sites/43/2026/07/sw07152026turingimg6.png
The author explores the concept of bugs in software and their ubiquity, discussing how even simple programs can exhibit computational irreducibility and unpredictability, making it difficult to guarantee bug-free behavior. The author uses examples from Turing machines and cellular automata to illustrate the challenges of predicting program behavior and the importance of computational ...

Decathlon Germany adds Wero payment option to decathlon.de website

https://d1f00kj7ad54bu.cloudfront.net/Pictures/1024x536/9/6/4/60964_wero_807274_crop.jpg
Decathlon is the first German retailer to use Wero, a European payment scheme that routes payments directly between bank accounts in real time. Wero aims to reduce processing costs and increase loyalty for retailers like Decathlon, but still lacks in-store point of sale functionality.

Should you wash your solar panels?

https://img.incoherency.co.uk/6637/thumb
The user cleaned their 16-panel solar farm and saw a 2-5% increase in power output, worth £60-150 per year. They plan to upgrade the solar farm but are hesitant due to a change in feed-in tariff rules that would reduce their benefits.

Shay Locomotives