Renting a sewing machine from the library

92 sohkamyung 2026-06-20 23:41:11 UTC bbc.com Llama Share 38

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

46 Sibexico 2026-06-20 23:41:11 UTC sibexi.co Llama Share 13

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

51 cauenapier 2026-06-20 22:41:11 UTC townsquare.cauenapier.com Llama Share 19

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.

Slow breathing modulates brain function and risk behavior

43 croes 2026-06-20 22:41:11 UTC cell.com Llama Share 3

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.

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

48 Cider9986 2026-06-20 22:41:11 UTC github.com/mysk-research Llama Share 10

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.

Project Fetch: Phase Two

24 stopachka 2026-06-21 00:41:11 UTC anthropic.com Llama Share 4

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

227 zdw 2026-06-20 17:41:11 UTC smpte.org Llama Share 64

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.

15-minute at-home Lyme disease tick test

21 bookofjoe 2026-06-20 23:41:11 UTC bostonglobe.com Llama Share 7

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.

Alice is impatient

52 birdculture 2026-06-20 21:41:11 UTC brooker.co.za Llama Share 12

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.

Unauthorized alert sent to cell phones across Brazil

83 zdw 2026-06-20 20:41:11 UTC cnn.com Llama Share 60

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.

UHF X11: X11 Built for VisionOS and Apple Vision Pro

164 zdw 2026-06-20 17:41:11 UTC lispm.net Llama Share 27

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.

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

12 higginsniggins 2026-06-21 00:41:11 UTC bbc.com Llama Share 1

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.

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

202 LowLevelMahn 2026-06-20 15:41:11 UTC neuviemeporte.github.io Llama Share 57

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.

CSSQuake

460 msalsas 2026-06-20 11:41:11 UTC cssquake.com Full Share 100

Play Quake in your browser with no install. cssQuake renders the game as inspectable HTML and CSS powered by PolyCSS.

Semiconductor Lifeline Keeps Fighter Jets in the Air

34 rbanffy 2026-06-20 21:41:11 UTC spectrum.ieee.org Llama Share 6

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.

Whole cross-sectional human ultrasound tomography

16 lnyan 2026-06-20 23:41:11 UTC nature.com Llama Share 3

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.

PostgresBench: A Reproducible Benchmark for Postgres Services

76 saisrirampur 2026-06-20 19:41:11 UTC clickhouse.com Llama Share 20

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.

Inference cost at scale with napkin math

59 gmays 2026-06-20 20:41:11 UTC injuly.in Llama Share 13

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.

Show HN: StartupWiki – A Free Alternative to Crunchbase

153 shpran 2026-06-20 16:41:11 UTC startupwiki.tech Full Share 52

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

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

88 overflowy 2026-06-20 18:41:11 UTC github.com/overflowy Llama Share 42

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.

Pre-2022 Books

156 trms 2026-06-20 22:41:11 UTC notes.lorenzogravina.com Llama Share 90

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.

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

88 simonpure 2026-06-20 21:41:11 UTC phoronix.com Llama Share 55

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().

The rise of South Korea’s weapons business

111 JumpCrisscross 2026-06-20 17:41:11 UTC politico.com Llama Share 41

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.

The Wholesale Plagiarism of Obscure Sorrows

320 ridesisapis 2026-06-20 18:41:11 UTC waxy.org Llama Share 134

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.

Temporary Cloudflare accounts for AI agents

167 farhadhf 2026-06-20 11:41:11 UTC blog.cloudflare.com Llama Share 95

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.

Supermarket giant Tesco sues VMware for breach of contract

87 wglb 2026-06-20 21:41:11 UTC theregister.com Llama Share 21

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.

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

113 gr4vityWall 2026-06-20 17:41:11 UTC github.com/oven-sh Llama Share 210

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.

Show HN: We post-trained a model that pen tests instead of refusing

76 dk189 2026-06-20 17:41:11 UTC argusred.com Llama Share 33

Argusred is a free security scanner that runs locally on your machine, scanning your code for vulnerabilities and attempting safe reproductions of findings with exploit verification. It offers a free trial with 2M tokens, and scans can be run in two modes: Security Scan and Pen Test, with the latter requiring booking and authorisation.

Show HN: My Windows XP portfolio with working Game Boy and iPod

52 mitchivin 2026-06-20 19:41:11 UTC mitchivin.com Full Share 26

Skip to desktop applications Skip to start menu After you log on, the system's yours to explore. Every detail has been designed with a purpose. Tap on the user icon to begin

Show HN: Tiny – An interpeted dynamic langauge with inline Go native functions

33 confis 2026-06-20 19:41:11 UTC github.com/confh Llama Share 5

Tiny is a concurrent language with a runtime system that compiles to bytecode and runs on a virtual machine. It features a multi-tiered execution model, direct OS-level parallel threading, and a built-in Language Server.