Renting a sewing machine from the library

131 sohkamyung 2026-06-20 23:35:47 UTC bbc.com Llama Share 61

Finland's libraries are thriving as community service centers, offering more than just books, and promoting social inclusion and democracy. They are valued for their role in helping societies function, with over 700 libraries serving Finland's 5.6 million people.

Epoll vs. io_uring in Linux

69 Sibexico 2026-06-20 23:35:47 UTC sibexi.co Llama Share 21

The user discusses the differences between epoll and io_uring for handling asynchronous I/O on Linux, highlighting io_uring's efficiency and reduced syscall overhead. io_uring is recommended for modern Linux projects due to its improved performance and architectural changes.

Show HN: TownSquare, a tiny presence layer for websites

92 cauenapier 2026-06-20 22:35:47 UTC townsquare.cauenapier.com Llama Share 35

TownSquare is a web platform where users can interact without accounts or algorithms, sharing a virtual space. It features simple controls for movement, chat, and social interactions, creating a fun and playful online experience.

Developers don't understand CORS (2019)

27 toilet 2026-06-21 02:35:47 UTC fosterelli.co Llama Share 8

Web developers often misunderstand how CORS works, leading to security vulnerabilities like the recent Zoom vulnerability, which was caused by bypassing CORS to access a localhost webserver. A secure implementation would involve implementing a REST API with CORS headers and a Content Security Policy to prevent unauthorized access.

Loupe – A iOS app that raises awareness about what native apps can see

102 Cider9986 2026-06-20 23:35:47 UTC github.com/mysk-research Llama Share 23

Loupe is an iOS app that shows device fingerprinting data from public APIs, helping users see what apps can quietly learn about their device. It's free and open source, with a Mac version in development.

15-minute at-home Lyme disease tick test

55 bookofjoe 2026-06-21 00:35:47 UTC bostonglobe.com Llama Share 17

LymeAlert is a 15-minute tick test that can detect Lyme disease, priced at $40 per test. It's designed to help people avoid unnecessary doctor visits and antibiotic doses by testing ticks for the disease.

Slow breathing modulates brain function and risk behavior

77 croes 2026-06-20 22:35:47 UTC cell.com Llama Share 14

Prolonged exhalation breathing can increase cardiac parasympathetic activity, leading to enhanced reward sensitivity and increased risky choices. This effect is associated with changes in brain activity in regions involved in reward processing, such as the ventromedial prefrontal cortex and precuneus.

Project Fetch: Phase Two

41 stopachka 2026-06-21 00:35:47 UTC anthropic.com Llama Share 14

Anthropic's Claude model has improved significantly, enabling it to complete tasks 20 times faster than humans without assistance. However, it still struggles with precise robotic control and adapting to new tasks.

SMPTE Makes Its Standards Freely Accessible

239 zdw 2026-06-20 17:35:47 UTC smpte.org Llama Share 68

SMPTE has made its entire Standards catalog freely available to the global media technology community. This move aims to accelerate adoption and implementation, strengthen interoperability, and drive innovation in the industry.

When I reject AI code even if it works

59 vnbrs 2026-06-21 01:35:47 UTC vinibrasil.com Llama Share 30

Using AI for coding generates a large volume of code that requires human review to ensure quality and scalability. Engineers should guide AI coding agents to produce adequate solutions, not rely solely on AI reviews.

UHF X11: X11 Built for VisionOS and Apple Vision Pro

177 zdw 2026-06-20 17:35:47 UTC lispm.net Llama Share 31

visionOS receives X11 calls from clients and vintage machines, opening each top-level window separately. X authority cookies are generated on device and copied to clients for secure connections.

Unauthorized alert sent to cell phones across Brazil

98 zdw 2026-06-20 20:35:47 UTC cnn.com Llama Share 76

Unauthorized alert with "misantropi4" message sent to cell phones in Brazil, suspected to be a hacker attack. Brazilian government is investigating the incident and restoring the National Civil Defense's warning platform.

DOS Game "F-15 Strike Eagle II" reversing project needs DOS test pilots

218 LowLevelMahn 2026-06-20 15:35:47 UTC neuviemeporte.github.io Llama Share 59

The F-15 Strike Eagle 2 reconstruction project has made significant progress, with all C code rewritten and data moved from assembly to C. The project is now open for testing and bug reporting, with the latest release v0.9.1 available for download.

Whole cross-sectional human ultrasound tomography

38 lnyan 2026-06-20 23:35:47 UTC nature.com Llama Share 4

Researchers developed a new system for whole cross-sectional ultrasound tomography, enabling imaging of the entire human cross-section in reflection and transmission modes. This system has potential applications in clinical needs, such as adipose thickness assessment and video-rate biopsy needle localization.

Alice is impatient

66 birdculture 2026-06-20 22:35:47 UTC brooker.co.za Llama Share 18

You're measuring time in requests or outages, but users like Alice and Alex experience time in seconds and minutes, leading to a discrepancy in perceived wait times. This is due to the inspection paradox, where users experience a time-weighted version of the latency distribution, resulting in a higher mean time to recovery than the actual MTTR.

Semiconductor Lifeline Keeps Fighter Jets in the Air

46 rbanffy 2026-06-20 21:35:47 UTC spectrum.ieee.org Llama Share 16

Phoenix Semiconductor repackages off-the-shelf semiconductors to replace unavailable chips for the US Navy and other customers. The company aims to bridge the gap between high-mix, low-volume demand and large chip manufacturers.

PostgresBench: A Reproducible Benchmark for Postgres Services

86 saisrirampur 2026-06-20 19:35:47 UTC clickhouse.com Llama Share 22

A benchmark was created to compare Postgres performance across various services, including AWS RDS, Aurora, and others, using a TPC-B-like workload. The results show that Postgres managed by ClickHouse outperforms others due to its NVMe-backed storage and architecture.

NOLA 'Nacular: One man's crusade to preserve New Orleans's vernacular signage

22 NaOH 2026-06-21 02:35:47 UTC countryroadsmagazine.com Llama Share 2

Anthony DelRosario documents New Orleans' hand-painted signs as a form of vernacular art. His project, Nola 'Nacular, preserves the city's unique voice and culture.

Linux eliminates the strncpy API after six years of work, 360 patches

114 simonpure 2026-06-20 21:35:47 UTC phoronix.com Llama Share 93

Linux 7.2 has eliminated the deprecated strncpy API due to bugs and performance issues. It has been replaced with alternative functions like strscpy() and memcpy().

Show HN: Make PDFs look scanned (CLI or in the browser via WASM)

96 overflowy 2026-06-20 18:35:47 UTC github.com/overflowy Llama Share 48

make-look-scanned is a CLI and browser tool that degrades PDFs to look like physical scans. It uses Go and a C toolchain for the CLI and PDF.js for the browser build, both with AGPL-3.0 licenses.

Show HN: StartupWiki – A Free Alternative to Crunchbase

168 shpran 2026-06-20 16:35:47 UTC startupwiki.tech Full Share 57

StartupWiki is a community-driven AI-powered research directory of global startup ventures. Explore AI, Biotech, CleanTech, FinTech and more.

Inference cost at scale with napkin math

64 gmays 2026-06-20 20:35:47 UTC injuly.in Llama Share 14

To estimate the cost of serving AI models, we calculate the dollar cost-per-user based on GPU cluster scale, model architecture, and inference math. With a 32B model on a B200 GPU, we can serve 300 users comfortably, with a lifetime cost of $133 per user or $0.013 per user per hour.

Temporary Cloudflare accounts for AI agents

180 farhadhf 2026-06-20 11:35:47 UTC blog.cloudflare.com Llama Share 98

Cloudflare updated Wrangler to allow agents to deploy code without signing up for an account. Agents can now use the --temporary flag to deploy code instantly, with a 60-minute claim window to make the account permanent.

The Wholesale Plagiarism of Obscure Sorrows

333 ridesisapis 2026-06-20 18:35:47 UTC waxy.org Llama Share 139

A marketing agency, Qontour, created an unauthorized website for The Dictionary of Obscure Sorrows, using AI-generated content and monetizing it with affiliate links. The site outranks the official site in search results, causing confusion over its authorship and potentially damaging the book's reputation.

The rise of South Korea’s weapons business

121 JumpCrisscross 2026-06-20 17:35:47 UTC politico.com Llama Share 44

South Korea's defense industry has grown rapidly, becoming the 9th-largest arms exporter in the world, with a projected combined revenue of $37 billion in 2026. The country's emphasis on speed, affordability, and technology transfer has made it a reliable alternative supplier to European NATO members.

Bun has an open PR adding shared-memory threads to JavaScriptCore

118 gr4vityWall 2026-06-20 17:35:47 UTC github.com/oven-sh Llama Share 228

The batch cannot be applied due to multiple invalid suggestions. Suggestions cannot be applied in certain situations such as deleted lines, pending reviews, and queued pull requests.

'We had to get out of the way': The backlash over delivery robots

49 higginsniggins 2026-06-21 00:35:47 UTC bbc.com Llama Share 46

Delivery robots are appearing in cities worldwide, but concerns over pedestrian safety and job impact are growing. Residents and authorities are calling for regulations and safety tests before widespread adoption.

Supermarket giant Tesco sues VMware for breach of contract (2025)

105 wglb 2026-06-20 21:35:47 UTC theregister.com Llama Share 26

Tesco sued Broadcom for breach of contract over VMware licenses, claiming it must pay excessive prices for software updates. Tesco warns that lack of support may impact its ability to supply groceries in the UK and Ireland.

White House delays US voting-machine vulnerability report

61 logickkk1 2026-06-21 01:35:47 UTC reuters.com Full Share 40

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Pre-2022 Books

164 trms 2026-06-20 23:35:47 UTC notes.lorenzogravina.com Llama Share 104

You prefer books published before 2022 due to the manual effort involved in their creation, giving them more weight and credibility. This preference stems from valuing the human touch and effort that went into producing these works.