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Building a Center of Excellence for Ansible

Red Hat blog @ 2026-05-08 02:00:00

As Ansible adoption grows, a challenge can arise: How do organizations track automation efforts across the entire enterprise? A common solution is to establish a Center of Excellence (CoE) for Ansible, helping organizations move from isolated automation ef

Researchers Simulated a Delusional User To Test Chatbot Safety

slashdot @ 2026-04-24 20:00:00

An anonymous reader quotes a report from 404 Media: I'm the unwritten consonant between breaths, the one that hums when vowels stretch thin... Thursdays leak because they're watercolor gods, bleeding cobalt into the chill where numbers frost over," Grok to

Norway Set to Become Latest Country to Ban Social Media for Under 16s

slashdot @ 2026-04-24 19:00:00

Norway plans to ban social media access for children under 16 (source paywalled; alternative source), "joining a growing number of countries responding to concerns about the potential harm kids face online," reports Bloomberg. From the report: The bill com

★ Norwegian Boating Licenses and Generational Law

Daring Fireball @ 2026-04-24 18:09:50

My spitball idea for a generational law to keep more young people from ever starting a tobacco habit — and thus, nicotine addiction — would be through scaled taxation.

Community Votes to Deny Water to Nuclear Weapons Data Center

slashdot @ 2026-04-24 18:00:00

A Michigan township has voted to impose a one-year moratorium on providing water to hyperscale data centers, a move aimed at delaying a planned facility that would support Los Alamos National Laboratory's nuclear weapons research. The moratorium may not be

I Cancelled Claude: Token Issues, Declining Quality, and Poor Support

Hacker News 200 @ 2026-04-24 17:59:19

Article URL: Comments URL: Points: 373 # Comments: 201

US Special Forces Soldier Arrested For Polymarket Bets On Maduro Raid

slashdot @ 2026-04-24 17:00:00

An anonymous reader quotes a report from Wired: The Department of Justice announced Thursday that it arrested Gannon Ken Van Dyke, an enlisted member of the US Army's special forces, for allegedly using "classified, nonpublic" information about the capture

Norway Set to Become Latest Country to Ban Social Media for Under 16s

Hacker News 200 @ 2026-04-24 16:45:10

Article URL: Comments URL: Points: 278 # Comments: 250

Sabotaging projects by overthinking, scope creep, and structural diffing

Hacker News 200 @ 2026-04-24 16:28:52

Article URL: Comments URL: Points: 223 # Comments: 57

★ ‘We Don’t Serve Their Kind Here’

Daring Fireball @ 2026-04-24 16:18:03

I think about this scene more and more lately.

A New Type of Neuroplasticity Rewires the Brain After a Single Experience

Quanta Magazine @ 2026-04-24 16:17:44

“Neurons that fire together, wire together” is not the full story. A novel mechanism explains how the brain can learn across longer timescales. The post A New Type of Neuroplasticity Rewires the Brain After a Single Experience first appeared

Defending against exceptions in a scope_exit RAII type

old new thing @ 2026-04-24 16:00:00

But maybe it's not worth it. The post Defending against exceptions in a <CODE>scope_exit</CODE> RAII type appeared first on The Old New Thing .

XOXO Explore

Daring Fireball @ 2026-04-24 15:28:41

Andy McMillan and Andy Baio: Today, over 10 years later, and almost two full years after we retired the festival for good, we’re finally launching that website. Named after what we thought would be a throwaway title for a short-lived GitHub repo, allo

New Zealand Passed a Generational Smoking Ban in 2022, But Repealed It Before It Went Into Effect

Daring Fireball @ 2026-04-24 15:12:55

Eva Corlett, reporting for The Guardian in 2023: New Zealand’s new government will scrap the country’s world-leading law to ban smoking for future generations to help pay for tax cuts — a move that public health officials believe will cost thousands o

Lykke Studios: In pursuit of puffy perfection

Apple Developer News and Updates @ 2026-04-24 15:00:15

DEVELOPER STORIES THE POWER OF PUFFIES. The delightful game puffies. combines the satisfying snap of a jigsaw puzzle with the nostalgic delight of a sticker book. This 2025 Apple Design Award finalist for Inclusivity is brimming with virtual puffy

Yelp Achieves Zero-Downtime Upgrade of Over 1,000 Cassandra Nodes

InfoQ @ 2026-04-24 14:00:00

Yelp has completed a large-scale upgrade of its Apache Cassandra infrastructure, spanning more than 1,000 nodes, without any service downtime, offering a blueprint for managing stateful systems at scale. By Craig Risi

Claude Is Connecting Directly To Your Personal Apps

slashdot @ 2026-04-24 13:00:00

Anthropic is expanding Claude's app integrations beyond work tools, adding personal-service connectors like Spotify, Uber, AllTrails, TripAdvisor, Instacart, and TurboTax. The Verge reports: Some of these apps, such as Spotify, already have similar connect

Does reading do us any good?

AEON @ 2026-04-24 12:00:00

Stripped of easy moralising, literature makes us relish the search for truth in an age when many believe truth to be dead - by Flora Champy Read on Aeon

South Korea police arrest man for posting AI photo of runaway wolf

Hacker News 200 @ 2026-04-24 11:17:57

Article URL: Comments URL: Points: 207 # Comments: 133

Wire Codes

Quantum Journal @ 2026-04-24 10:43:51

Quantum 10, 2083 (2026). Quantum information is fragile and must be protected by a quantum error-correcting code for large-scale practical applications. Recently, highly efficient quantum codes have been discov

Spinel: Ruby AOT Native Compiler

Hacker News 200 @ 2026-04-24 10:28:47

Article URL: Comments URL: Points: 249 # Comments: 72

HashiCorp Vault 2.0 Marks Shift to IBM Lifecycle with New Identity Federation

InfoQ @ 2026-04-24 09:00:00

HashiCorp has released Vault 2.0, moving to the IBM versioning and support model following its acquisition. The update introduces Workload Identity Federation for secret syncing without static credentials, SCIM 2.0 provisioning, and performance gains in

FCC's Foreign-Made Router Ban Expands To Portable Wi-Fi Hotspot Devices

slashdot @ 2026-04-24 09:00:00

The FCC has expanded its foreign-made router ban to also cover consumer Wi-Fi hotspots and LTE/5G home-internet devices, though existing products and phones with hotspot features are not affected. PCMag reports: On Wednesday, the FCC updated its FAQ on the

Show HN: How LLMs Work – Interactive visual guide based on Karpathy's lecture

Hacker News 200 @ 2026-04-24 08:48:53

All content is based on Andrej Karpathy's "Intro to Large Language Models" lecture (youtube.com/watch?v=7xTGNNLPyMI). I downloaded the transcript and used Claude Code to generate the entire interactive site from it — single HTML file. I find it useful to

Ubuntu 26.04

Hacker News 200 @ 2026-04-24 06:38:37

Article URL: Comments URL: Points: 284 # Comments: 220

Habitual coffee intake shapes the microbiome, modifies physiology and cognition

Hacker News 200 @ 2026-04-24 06:04:42

Article URL: Comments URL: Points: 238 # Comments: 217

New Gas-Powered Data Centers Could Emit More Greenhouse Gases Than Entire Nations

slashdot @ 2026-04-24 05:30:00

An anonymous reader quotes a report from Wired: New gas projects linked to just 11 data center campuses around the US have the potential to create more greenhouse gases than the country of Morocco emitted in 2024. Emissions estimates from air permit docume

DeepSeek v4

Hacker News 200 @ 2026-04-24 05:01:21

Comments URL: Points: 1611 # Comments: 1265

Why I Write (1946)

Hacker News 200 @ 2026-04-24 04:26:23

Article URL: Comments URL: Points: 245 # Comments: 65

United Kingdom to Enact Smoking Ban Only for Those Who Are Not Yet Legal Adults

Daring Fireball @ 2026-04-24 03:26:13

Ephrat Livni, reporting for The New York Times (gift link): Britain aims to raise a “smoke-free generation” by permanently banning the sale or supply of tobacco to anyone born in 2009 or after, with a bill that was approved by Parliament on Tuesday.

Learning from Nature with System Dynamics

John Carlos Baez @ 2026-04-24 02:10:52

  We have left the Holocene and entered a new epoch, the Anthropocene, in which the biosphere is rapidly changing due to human activities. We do not need to decide to address these issues. They are already addressing us: grabbing us by the collar, so

Learning from Nature with System Dynamics

Physics Phorums @ 2026-04-24 02:10:52

  We have left the Holocene and entered a new epoch, the Anthropocene, in which the biosphere is rapidly changing due to human activities. We do not need to decide to address these issues. They are already addressing us: grabbing us by the collar, so

When less is more: Why less precision and fewer parameters carry enterprise AI

Red Hat blog @ 2026-04-24 02:00:00

Running Llama 70B as an on-demand cloud inference endpoint costs roughly $16,000 per month. Running Llama 8B costs about $734. For teams where an 8B model meets the quality bar for their workload, that gap is very hard to ignore.The question enterprise tea

Friday Five — April 24, 2026

Red Hat blog @ 2026-04-24 02:00:00

5 reasons to go with your team to Red Hat Summit 2026Red Hat Summit is where the global community comes together to solve the industry's biggest challenges, and there is no better way to navigate that future than with your team by your side. Register today

Customer stories and continued momentum: OpenShift Virtualization sessions at Red Hat Summit 2026

Red Hat blog @ 2026-04-24 02:00:00

Disruption in the virtualization market has not slowed down. The fallout from industry licensing and packaging changes continues to push organizations into decisions they were not planning to make this year, and for many, the timelines are getting shorter,

Confidential guest reset on QEMU hypervisor: Design choices and approach

Red Hat blog @ 2026-04-24 02:00:00

Looking at the release notes or changelogs for QEMU upstream, you might notice that there's something new in version 11.0:SEV-SNP and TDX machines can now be reset.This is a feature we at Red Hat helped implement. The motivations and associated challenges

Confidential clusters for Red Hat OpenShift: Developer Preview now available on Microsoft Azure with AMD SEV-SNP

Red Hat blog @ 2026-04-24 02:00:00

Extending confidential computing from individual workloads to the entire cluster is a new frontier in cloud-native security.Today, Red Hat is announcing the Developer Preview of confidential clusters for Red Hat OpenShift, a new feature of OpenShift that e

Apple Stops Weirdly Storing Data That Let Cops Spy On Signal Chats

slashdot @ 2026-04-24 01:00:00

Apple has fixed a bug that could cause parts of Signal notifications to remain stored on iPhones even after messages disappeared and the app was deleted. "Affected users concerned about push notifications can update their devices to stop what Apple charact

CATL’s New EV Battery Charges in Six Minutes

Singularity Hub @ 2026-04-24 00:21:28

That's a few minutes longer than it takes to fill up the average gas-powered car—but still fast enough it might not matter. The post CATL’s New EV Battery Charges in Six Minutes appeared first on SingularityHub .

Show HN: Tolaria – Open-source macOS app to manage Markdown knowledge bases

Hacker News 200 @ 2026-04-24 00:01:59

Hey there! I am Luca, I write and I built Tolaria for myself to manage my own knowledge base (10K notes, 300+ articles written in over 6 years of newslettering) and work well with AI. Tolaria is offline-first, file-based, has fi

Warner Bros Shareholders Approve Paramount's $81 Billion Takeover

slashdot @ 2026-04-24 00:00:00

Warner Bros. Discovery shareholders have approved Paramount Skydance's takeover bid, moving the massive Hollywood merger a step closer to completion. It's not a done deal quite yet, though, as it still faces regulatory scrutiny and fierce opposition from c

US special forces soldier arrested after allegedly winning $400k on Maduro raid

Hacker News 200 @ 2026-04-23 23:56:15

Comments URL: Points: 581 # Comments: 621

Trump’s Blog Has Somehow Lost $1.1 Billion

Daring Fireball @ 2026-04-23 23:14:35

Russ Choma, reporting for Mother Jones: Devin Nunes was not an obvious choice to run a fledgling social media network, but after $1.1 billion in losses, the former dairy farmer and congressman is out as the head of Truth Social. Donald Trump Jr., a

Every Atlantic hurricane track, 1980 to 2025

Randal S. Olson @ 2026-04-23 23:00:00

Every Atlantic tropical cyclone from 1980 to 2025 on one map. The shape of the basin and the deadliest storms of 46 seasons emerge from the density.

U.S. oil: from peak importer to net exporter in one decade

Randal S. Olson @ 2026-04-23 23:00:00

The U.S. imported a record 13.7 MMb/d of oil in 2005. By 2025 it exports 2.8 MMb/d more than it imports. Here is what actually changed.

OpenAI Says Its New GPT-5.5 Model Is More Efficient and Better At Coding

slashdot @ 2026-04-23 23:00:00

OpenAI released its new GPT-5.5 model today, which the company calls its "smartest and most intuitive to use model yet, and the next step toward a new way of getting work done on a computer." The Verge reports: OpenAI just released GPT-5.4 last month, but

Using the internet like it's 1999

Hacker News 200 @ 2026-04-23 22:14:29

Article URL: Comments URL: Points: 219 # Comments: 156

Nilay Patel: ‘Beware Software Brain’

Daring Fireball @ 2026-04-23 22:13:49

Nilay Patel, in a terrific essay (and Decoder one-sider) at The Verge: In fact, the polling on this is so strong, I think it’s fair to say that a lot of people hate AI, and that Gen Z in particular seems to hate AI more and more as they encounter

A thousand springs in Kyoto, in one chart

Randal S. Olson @ 2026-04-23 22:00:00

Kyoto's 1,200-year cherry blossom record shows modern decades hold the earliest cluster of blooms ever seen. A warming signal written in flowers.

Java 17 available on SPARC

C0T0D0S0 @ 2026-04-23 22:00:00

New Java version for Solaris/SPARC

Meta Is Laying Off 10% of Its Workforce

slashdot @ 2026-04-23 22:00:00

Meta is reportedly cutting about 10% of its workforce, or roughly 8,000 jobs, while closing thousands of open roles it had intended to fill. "We're doing this as part of our continued effort to run the company more efficiently and to allow us to offset the

The Public CA clientAuth EKU Sunset: What Apache Software Deployers Need to Know

ASF @ 2026-04-23 21:48:25

By: Jinwoo Hwang, Lead Developer, Project Lead, and Release Manager, Apache Geode 2.0 What Apache Software Deployers Need to Know Before May 2026 Effective May 2026, major public Certificate Authorities (CAs) will stop including the Client Authentication

Eight for Eight

Daring Fireball @ 2026-04-23 21:36:15

Speaking of Chris Espinosa, this is pretty neat: On September 1 I’ll join the elite club (members Steve Wozniak, Steve Jobs, Mike Markkula, and Bill Fernandez) who have worked under a number of Apple CEOs ≥ our employee number: Woz: 1 (Scott) Jobs

Java Weekly, Issue 643

Baeldung @ 2026-04-23 21:26:11

Interesting AI-focused pieces and starting to look forward towards JDK 27. The post Java Weekly, Issue 643 first appeared on Baeldung .              

Girl, 10, finds rare Mexican axolotl under Welsh bridge

Hacker News 200 @ 2026-04-23 21:09:40

Article URL: Comments URL: Points: 218 # Comments: 205

Schroedingers Honeypot revisited

C0T0D0S0 @ 2026-04-23 21:03:00

Now with even more honey!

130 years of Boston Marathon winning times

Randal S. Olson @ 2026-04-23 21:00:00

John Korir broke a 15-year-old Boston Marathon course record in 2026. The full 1897-2026 arc shows why, and what the women's line has been doing.

France Confirms Data Breach At Government Agency That Manages Citizens' IDs

slashdot @ 2026-04-23 21:00:00

An anonymous reader quotes a report from TechCrunch: The French government agency that handles the issuing and management of citizens' identity documents, including national IDs, passports, and immigration documents, confirmed Wednesday that it experienced

Meta tells staff it will cut 10% of jobs

Hacker News 200 @ 2026-04-23 20:55:32

Comments URL: Points: 769 # Comments: 803

GPT-5.5

Hacker News 200 @ 2026-04-23 20:01:39

Article URL: Comments URL: Points: 1498 # Comments: 998

Tim Cook Calls Apple Maps Launch His 'First Really Big Mistake' as CEO

slashdot @ 2026-04-23 20:00:00

In a recent town hall meeting reported by Bloomberg (paywalled), Apple CEO Tim Cook named the troubled 2012 launch of Apple Maps as his "first really big mistake" in the role. "The product wasn't ready, and we thought it was because we were testing more of

Microsoft Offers Voluntary Retirement to Long-Serving Employees

Daring Fireball @ 2026-04-23 19:53:58

Tom Warren, The Verge (gift link): “Many of these employees have spent years, and in some cases, decades, shaping Microsoft into what it is today,” says Microsoft’s HR chief Amy Coleman in a memo seen by The Verge. “For those who may be considering th

An update on recent Claude Code quality reports

Hacker News 200 @ 2026-04-23 19:48:38

Article URL: Comments URL: Points: 878 # Comments: 662

Variational subspace methods and application to improving variational Monte Carlo dynamics

Quantum Journal @ 2026-04-23 19:43:51

Quantum 10, 2082 (2026). We present a formalism that allows for the direct manipulation and optimization of subspaces, circumventing the need to optimize individual states when using subspace methods. Using the

Palantir employees are starting to wonder if they're the bad guys

Hacker News 200 @ 2026-04-23 19:30:05

Article URL: Comments URL: Points: 902 # Comments: 671

Unauthorized Users in Discord Group Had Weekslong Access to Anthropic’s Supposedly-Super-Dangerous Claude Mythos Model

Daring Fireball @ 2026-04-23 19:28:23

Rachel Metz, reporting for Bloomberg: A small group of unauthorized users have accessed Anthropic PBC’s new Mythos AI model, a technology that the company says is so powerful it can enable dangerous cyberattacks, according to a person familiar with th

'Hairdryer used to trick weather sensor' to win Polymarket bet

Hacker News 200 @ 2026-04-23 19:01:01

Article URL: Comments URL: Points: 254 # Comments: 241

Microsoft Plans First-Ever Voluntary Employee Buyout

slashdot @ 2026-04-23 19:00:00

Microsoft plans to offer voluntary buyouts for the first time. According to CNBC, "about 7% of U.S. employees are eligible," with the program being "available to U.S. workers at the senior director level and below whose years of employment and age add up t

New York Sues Coinbase and Gemini, Seeking To Halt Unlicensed Prediction Market Businesses

slashdot @ 2026-04-23 18:15:00

An anonymous reader quotes a report from the Associated Press: New York is suing Coinbase and Gemini, two of the newest players in the prediction market industry, arguing that the companies' unregulated and unlicensed platforms are illegal gambling operati

The Last (and Longest) Mile of Apache Kafka® Migrations: Client Migrations With KCP and Confluent Cloud Gateway

Confluent @ 2026-04-23 17:58:50

Use Confluent’s Kafka Copy Paste (KCP) integration with Gateway to simplify Kafka client migration and reduce your client migration time from weeks to hours.

Approximation to solve an oblique triangle

The Endeavour @ 2026-04-23 17:56:02

The previous post gave a simple and accurate approximation for the smaller angle of a right triangle. Given a right triangle with sides a, b, and c, where a is the shortest side and c is the hypotenuse, the angle opposite side a is approximately in radian

Decoupling Authorization at Scale: MongoDB Atlas and Cedar-Based Resource Policies

AWS Open Source News @ 2026-04-23 17:49:59

As organizations scale applications, managing authorization becomes increasingly complex. What starts as role-based permissions quickly evolves into intricate rules spanning multiple services, regions, and compliance requirements. Traditional approaches of

React Navigation 8.0 Alpha with Native Bottom Tabs, Reworked TypeScript Inference and History

InfoQ @ 2026-04-23 17:36:00

React Navigation has released version 8.0 in alpha, updating its routing library for React Native and web applications. Notable changes include native bottom tabs as the default, enhanced TypeScript inference, and deep linking enabled by default. The upd

Google Introduces Room 3.0: A Kotlin-First, Async, Multiplatform Persistence Library

InfoQ @ 2026-04-23 17:00:00

Room 3.0 is a major update to Android's persistence library that introduces breaking changes in key areas. The new release focuses on modernizing Android persistence layer around Kotlin Multiplatform and expands platform support to include JavaScript and

Fibonacci Waveguide Quantum Electrodynamics

Quantum Journal @ 2026-04-23 16:48:01

Quantum 10, 2081 (2026). Waveguide quantum electrodynamics (QED) provides a powerful framework for engineering quantum interactions, traditionally relying on periodic photonic arrays with continuous energy band

Holonomic quantum computation: a scalable adiabatic architecture

Quantum Journal @ 2026-04-23 16:26:10

Quantum 10, 2080 (2026). Holonomic quantum computation exploits the geometric evolution of eigenspaces of a degenerate Hamiltonian to implement unitary evolution of computational states. In this work we introdu

Another crash caused by uninstaller code injection into Explorer

old new thing @ 2026-04-23 16:00:00

Inadvertently destroying a staircase while standing on it. The post Another crash caused by uninstaller code injection into Explorer appeared first on The Old New Thing .

Grafana Rearchitects Loki with Kafka and Ships a CLI to Bring Observability Into Coding Agent

InfoQ @ 2026-04-23 15:00:00

At GrafanaCON 2026 in Barcelona, Grafana Labs announced Grafana 13 with the new Loki Kafka-backed architecture at the ingestion layer and the AI Observability in Grafana Cloud to monitor and evaluate AI systems in real time. In particular, the new CLI ca

Análisis de ajedrez | Perlas de Menorca (II)

Partidas ajedrez El País @ 2026-04-23 14:34:42

Este duelo entre dos niños prodigio de postín pudo acabar con un remate muy brillante de Faustino Oro, pero el reloj lo impidió

Simple approximation for solving a right triangle

The Endeavour @ 2026-04-23 14:13:35

Suppose you have a right triangle with sides a, b, and c, where a is the shortest side and c is the hypotenuse. Then the following approximation from [1] for the angle A opposite side a seems too simple and too accurate to be true. In degrees, A ≈ a 172°

How Observability and Telemetry Can Enhance the Practice of Software Engineering

InfoQ @ 2026-04-23 13:04:00

Observability must evolve with serverless, event-driven architectures. OpenTelemetry can decouple telemetry from vendors, letting developers emit consistent, high-quality data that explains real system behavior. Shared vocabularies and good telemetry mak

Life invisible

AEON @ 2026-04-23 12:01:00

In the Atacama Desert, scientists race to find novel cures for antibiotic-resistant infections, as mining interests encroach - by Aeon Video Watch on Aeon

No nature without fear

AEON @ 2026-04-23 12:00:00

Aldo Leopold saw this in the eyes of a dying wolf: when we no longer fear nature, we are on the road to its destruction - by Shawn Simpson Read on Aeon

Episode 56 “Ask the Architects at JavaOne” [AtA]

Inside Java @ 2026-04-23 02:00:00

In JavaOne 2026's closing session, the audience members asked the Java architects their questions about the state of structured concurrency and Project Babylon, how Java is being developed and what role AI plays in that, and more.

Bridging legacy and cloud-native: A new path with Red Hat OpenShift Dedicated deployed on Google Cloud and Google Cloud NetApp Volume

Red Hat blog @ 2026-04-23 02:00:00

Organizations are facing difficult decisions on choices of how to accelerate cloud-native innovation without sacrificing the stability of existing business critical applications and systems. Red Hat OpenShift Virtualization running on Red Hat OpenShift Ded

DF T-Shirts and Hoodies: Get Them While the Getting Is Good

Daring Fireball @ 2026-04-22 21:38:55

Daring Fireball t-shirts and hoodies are back. Order now, and we’ll start printing shirts at the end of this week and shipping them out next week. The hoodies are a new model from Bella Canvas, the manufacturer. Our previous hoodies were “heather

Libraries were transforming. Then COVID hit.

Randal S. Olson @ 2026-04-22 21:00:00

Two decades of IMLS data show U.S. libraries were successfully pivoting from book warehouses to community hubs. Then the pandemic set the transformation back years.

There Are Corrections, and There Are Corrections

Daring Fireball @ 2026-04-22 20:16:30

The New York Times (gift link): A correction was made on April 21, 2026: Because of an editing error, an earlier version of this article misstated which day the New York Mets suffered their 11th straight loss. It was on Sunday, not Monday. Even the

Ben Thompson on Tim Cook’s Legacy

Daring Fireball @ 2026-04-22 18:35:37

Ben Thompson at Stratechery, “Tim Cook’s Impeccable Timing”: Cook was, without question, an operational genius. Moreover, this was clearly the case even before he scaled the iPhone to unimaginable scale. When Cook joined Apple in 1998 the company’s op

Análisis de ajedrez | Perlas de Menorca (I)

Partidas ajedrez El País @ 2026-04-22 17:12:06

El argentino Sosa, 4º en el prestigioso abierto balear, ganó el premio a la partida más bella con un fulminante y preciso ataque al rey

A Powerful New ‘QR Code’ Untangles Math’s Knottiest Knots

Quanta Magazine @ 2026-04-22 16:49:47

With a newly discovered mathematical tool, researchers are hoping to gain unprecedented insight into the structure of complex knots. The post A Powerful New ‘QR Code’ Untangles Math’s Knottiest Knots first appeared on Quanta Magazine

Rabin has just passed away

Gödel's Lost Letter and P=NP @ 2026-04-22 16:27:43

Rabin has sadly just passed away at 94. This is a short piece on honoring him immediately. More is planned for the future. His work has touched key areas of mathematics as well as central areas of computer theory. Without his work theory would be completel

Dropbox Collaborates with GitHub to Reduce Monorepo Size from 87GB to 20GB

InfoQ @ 2026-04-22 16:14:00

Dropbox reduced its backend monorepo from 87GB to 20GB by optimizing Git delta compression in collaboration with GitHub. The changes improved clone times, CI performance, and developer velocity, highlighting how repository storage inefficiencies can impa

Mapping the page tables into memory via the page tables

old new thing @ 2026-04-22 16:00:00

So-called "fractal page mapping". The post Mapping the page tables into memory via the page tables appeared first on The Old New Thing .

Michael Rabin Passed Away on April 14, 2026, at the age of 94

Computational Complexity @ 2026-04-22 14:55:00

Michael Rabin passed away on April 14, 2026 at the age of 94.  (Scott Aaronson has also blogged about his passing, see   here .)  I had many points to make about him; however, the first one got so long that I will just do that one fo

High-Quality Chaos

daniel.haxx.se @ 2026-04-22 13:44:40

As I have been preparing slides for my coming talk at foss-north on April 28, 2026 I figured I could take the opportunity and share a glimpse of the current reality here on my blog. The high quality chaos era, as I call it. No more AI slop I complained and

Butterfly (Papillon)

AEON @ 2026-04-22 12:01:00

Crafting each frame by hand, an animator paints the story of an Olympic swimmer’s return after surviving the Holocaust - by Aeon Video Watch on Aeon

Cloudflare Sandboxes Reach General Availability, Giving AI Agents Persistent Isolated Environments

InfoQ @ 2026-04-22 12:00:00

Cloudflare has released Sandboxes and Containers into general availability, providing persistent isolated Linux environments for AI agent workloads. New capabilities include secure credential injection via egress proxy, PTY terminal support, persistent c

Cloudflare Outlines MCP Architecture as Enterprises Confront Security and Governance Risks

InfoQ @ 2026-04-22 09:38:00

Cloudflare has outlined a reference architecture for scaling Model Context Protocol (MCP) deployments across the enterprise, positioning centralized governance, remote server infrastructure, and cost controls as key requirements for production-ready agen

Importing p7b File to Java Keystore Using Keytool in Java

Baeldung @ 2026-04-22 07:02:48

Explore how keytool works with certificate bundles in the p7b format. The post Importing p7b File to Java Keystore Using Keytool in Java first appeared on Baeldung .              

Introduction to Spring Data AOT Repositories

Baeldung @ 2026-04-22 06:19:23

Explore Spring Data AOT Repositories using a simple UserRepository class to demonstrate how Spring Data Repositories worked before and what changes exactly this new feature introduced. The post Introduction to Spring Data AOT Repositories first appear

Convert IPv4 to IPv6 Address in Java

Baeldung @ 2026-04-22 06:14:40

Learn how to use Java for converting between IPv4 and IPv6 addresses. The post Convert IPv4 to IPv6 Address in Java first appeared on Baeldung .              

This Week in Rust 648

This Week in Rust @ 2026-04-22 06:00:00

Hello and welcome to another issue of This Week in Rust ! Rust is a programming language empowering everyone to build reliable and efficient software. This is a weekly summary of its progress and community. Want something mentioned? Tag us at @thiswee

[Sponsor] Rec League

Daring Fireball @ 2026-04-22 05:03:18

Rec League is a new app for sharing what you’re into. Catalog recommendations into tidy collections: your guide to Rome, your open tabs, your bookshelf. Follow people whose perspectives you trust, and discover brilliant, unexpected intel. Recently feature

The subject matter expert advantage in the AI era

Red Hat blog @ 2026-04-22 02:00:00

You have probably heard the narrative by now: AI is coming for your job. Headlines suggest that entire professions will soon disappear, replaced by increasingly capable models that can analyze, code, write, and reason faster than any human. But is that rea

Red Hat Performance and Scale Engineering

Red Hat blog @ 2026-04-22 02:00:00

Red Hat's most recent posts about Performance, Scale, Chaos and more.LATEST BLOGSPerformance improvements with speculative decoding in vLLM for gpt-ossApril 16, 2026 Harshith UmeshEvery millisecond of GPU latency is a drain on your enterprise AI budget. W

5 reasons to go with your team to Red Hat Summit 2026

Red Hat blog @ 2026-04-22 02:00:00

You no doubt have a limited budget and a lot of choices about what industry events to attend—but bringing your whole team to Red Hat Summit 2026 will deliver big benefits. Many organizations came to last year's Red Hat Summit with both decision makers and

Deploying cloud-based engineering workbenches with the Virtual Engineering Workbench on AWS

AWS Open Source News @ 2026-04-21 23:38:49

Introduction Organizations in automotive, manufacturing, and embedded systems increasingly rely on cloud-based development environments to reduce hardware dependency and accelerate software delivery. As vehicle architectures shift toward software-defined p

An AI Odyssey, Part 4: Astounding Coding Agents

The Endeavour @ 2026-04-21 22:14:40

AI coding agents improved greatly last summer, and again last December-January. Here are my experiences since my last post on the subject. The models feel subjectively much smarter. They can accomplish a much broader range of tasks. They seem to have a la

Scientists Revive Failing Cells With Mitochondria Transplants

Singularity Hub @ 2026-04-21 22:08:48

A new tool that tethers healthy mitochondria to ailing cells has shown promise in mice with inherited blindness. The post Scientists Revive Failing Cells With Mitochondria Transplants appeared first on SingularityHub .

Trump on Tim Apple

Daring Fireball @ 2026-04-21 21:17:34

The president of the United States, on his blog this morning (all capitalization, punctuation, and missing/wrong words verbatim): I have always been a big fan of Tim Cook, and likewise, Steve Jobs, but if Steve was not taken from the Planet Earth so y

ASF Plus One Newsletter: April 2026

ASF @ 2026-04-21 19:06:59

From the people who power the community to the programs shaping its future, this month’s Plus One issue highlights what keeps The ASF thriving. Meet Jean-Baptiste Onofré in the new Plus One People series, and see how mentorship at OpenSource4You in Taiwan

pnpm 11 Release Candidate: ESM Distribution, Supply Chain Defaults and a New Store Format

InfoQ @ 2026-04-21 18:00:00

pnpm 11 RC has been released, featuring significant changes in performance, security, and configuration. Key updates include an SQLite-backed store index, tighter security defaults, and a consolidated build script setting. It now requires Node.js v22 or

Análisis de ajedrez | El asombroso Erdogmus, de 14 años

Partidas ajedrez El País @ 2026-04-21 17:36:13

La profundidad de conceptos y cálculo del más joven de la historia en pasar de los 2.700 puntos Elo lo perfila como una estrella

Lessons from Log4Shell: Building a CRA-Ready Log4j

ASF @ 2026-04-21 17:36:11

By: Piotr P. Karwasz, VP Logging, Apache Software Foundation The disclosure of Log4Shell (CVE-2021-44228) on December 9, 2021 did not just expose a vulnerability: it exposed a way of building software that was no longer fit for purpose, and it helped brin

Partnering with industry leaders to accelerate AI transformation

Deepmind @ 2026-04-21 16:54:15

Google DeepMind partners with global consultancies to bring the power of frontier AI to organizations around the world.

Anthropic Introduces Managed Agents to Simplify AI Agent Deployment

InfoQ @ 2026-04-21 16:36:00

Anthropic introduces Managed Agents on Claude, a managed execution layer for agent-based workflows. It separates agent logic from runtime concerns like orchestration, sandboxing, state management, and credentials. The system supports long-running multi-s

Fragments: April 21

Martin Fowler @ 2026-04-21 16:34:00

Last week Thoughtworks released the 34th volume of our Technology Radar . This radar is our biannual survey of our experience of the technology scene, highlighting tools, techniques, platforms, and languages that we’ve used or otherwise caught our eye. T

Slack Rebuilds Notification System, Reports 5X Increase in Settings Engagement

InfoQ @ 2026-04-21 16:05:00

Slack has rebuilt its notification system with a unified architecture that separates activity from delivery, improving consistency across platforms. The redesign simplifies preferences, preserves legacy settings through transformation, and resulted in a

Sure, xor’ing a register with itself is the idiom for zeroing it out, but why not sub?

old new thing @ 2026-04-21 16:00:00

Somehow xor became the most popular version. The post Sure, xor’ing a register with itself is the idiom for zeroing it out, but why not sub? appeared first on The Old New Thing .

Kotlin Professional Certificate by JetBrains – Now on LinkedIn Learning

Kotlin Blog @ 2026-04-21 15:21:36

JetBrains has partnered with LinkedIn Learning to offer the Kotlin Professional Certificate. This is a structured learning path that covers the full scope of modern software development – from Kotlin essentials all the way to building full-stack, multiplat

Kotlin Professional Certificate by JetBrains – Now on LinkedIn Learning

Kotlin news @ 2026-04-21 15:21:36

JetBrains has partnered with LinkedIn Learning to offer the Kotlin Professional Certificate. This is a structured learning path that covers the full scope of modern software development – from Kotlin essentials all the way to building full-stack, multiplat

State preparation with parallel-sequential circuits

Quantum Journal @ 2026-04-21 14:04:45

Quantum 10, 2079 (2026). We introduce parallel-sequential (PS) circuits, a family of quantum circuit layouts that interpolate between brickwall and sequential circuits, which introduces control parameters gover

GitHub Acknowledges Recent Outages, Cites Scaling Challenges and Architectural Weaknesses

InfoQ @ 2026-04-21 14:00:00

GitHub has publicly addressed a series of recent availability and performance issues that disrupted services across its platform, attributing the incidents to rapid growth, architectural coupling, and limitations in handling system load. By Craig Risi

Estimating the best separable approximation of non-pure spin-squeezed states

Quantum Journal @ 2026-04-21 13:40:29

Quantum 10, 2078 (2026). We discuss the estimation of the distance of a given mixed many-body quantum state to the set of fully separable states, applied to the concrete scenario of collective spin states. Conc

Resource-theoretic hierarchy of contextuality for general probabilistic theories

Quantum Journal @ 2026-04-21 12:27:22

Quantum 10, 2077 (2026). In this work we present a hierarchy of generalized contextuality. It refines the traditional binary distinction between contextual and noncontextual theories, and facilitates their comp

Justice is geometric

AEON @ 2026-04-21 12:00:00

Where centralised societies excel at extraction, African fractal systems allow for circulation, reciprocity and return - by Likam Kyanzaire Read on Aeon

Elevating Variational Quantum Semidefinite Programs for Polynomial Objectives

Quantum Journal @ 2026-04-21 11:40:29

Quantum 10, 2076 (2026). Many practically important NP-hard optimization problems are inherently higher-order polynomial optimizations, which are typically addressed using approximation algorithms. Classical re

Comparing the performance of practical two-qubit gates for individual $^{171}$Yb ions in yttrium orthovanadate

Quantum Journal @ 2026-04-21 10:39:26

Quantum 10, 2075 (2026). In this paper, we investigate three schemes for implementing Controlled-Z (CZ) gates between individual ytterbium (Yb) rare-earth ions doped into yttrium orthovanadate (YVO$_4$ or YVO).

La diferencia de impedancia entre dos redes sociales

brucknerite @ 2026-04-21 10:00:00

A «nivel usuario», entre Mastodón y Bluesky no hay demasiada diferencia. Sin embargo, comunicarse entre ambas redes, aunque posible, viene con una serie de condicionantes que se parecen mucho al desacoplamiento de impedancia entre redes de componentes elec

★ Another Day Has Come

Daring Fireball @ 2026-04-21 05:59:41

If you agree that Apple itself was It’s hard to imagine a more orderly, confidence-inspiring, exciting-but-not-at-all-surprising, this-feels-right way to do this.

Cloudflare Introduces Project Think: a Durable Runtime for AI Agents

InfoQ @ 2026-04-21 04:34:00

Cloudflare's Project Think introduces a new framework for AI agents, shifting from stateless orchestration to a durable actor-based infrastructure. It features a kernel-like runtime enabling agents to manage memory and run code securely. Innovations incl

Quality Outreach Heads-up - JDK 27: Obsolete Translation Resources Removed

Inside Java @ 2026-04-21 02:00:00

This Heads-Up is part of the regular communication sent to the projects involved; it covers the removal of obsolete translation resources in JDK 27.

DF Paraphernalia: T-Shirts and Hoodies Are Back

Daring Fireball @ 2026-04-20 23:38:00

Daring Fireball t-shirts and hoodies are back. Order now, and we’ll start printing shirts at the end of this week and shipping them out next week. Go ahead and place your order now, while I gather my thoughts about today’s Apple leadership news

‘Community Letter From Tim’

Daring Fireball @ 2026-04-20 23:37:22

Tim Cook, in a letter addressed, simply, “To the Apple community”: For the past 15 years I’ve started just about every morning the same way. I open my email and I read notes I received the day before from Apple’s users all over the world. You share

Apple: ‘Tim Cook to Become Apple Executive Chairman; John Ternus to Become Apple CEO’

Daring Fireball @ 2026-04-20 22:44:58

Apple Newsroom, with a veritable “boom”: Apple announced that Tim Cook will become executive chairman of Apple’s board of directors and John Ternus, senior vice president of Hardware Engineering, will become Apple’s next chief executive officer effect

Printed Neurons That Mimic Brain Cells Could Slash AI’s Energy Bill

Singularity Hub @ 2026-04-20 21:38:06

New artificial neurons fire so realistically they can activate living brain cells in mouse tissue. The post Printed Neurons That Mimic Brain Cells Could Slash AI’s Energy Bill appeared first on SingularityHub .

Apple’s Annual Environmental Progress Report

Daring Fireball @ 2026-04-20 19:09:30

Apple Newsroom: In its annual Environmental Progress Report released today, Apple marked progress toward Apple 2030, the company’s ambitious goal to be carbon neutral across its entire footprint by the end of this decade. Apple’s greenhouse gas emis

Análisis de ajedrez | Barceló, de 9 años, logra su 4ª medalla en cuatro meses

Partidas ajedrez El País @ 2026-04-20 19:03:03

El español gana la plata en el Mundial Relámpago sub-10 tres días después del oro en el Mundial Rápido

Announcing Daniel Ruggeri as Executive Vice President of the Apache Software Foundation

ASF @ 2026-04-20 18:15:20

The Apache Software Foundation (ASF) has appointed Daniel Ruggeri to be the new Executive Vice President (EVP) of The ASF. A History of Contribution Daniel’s journey with The ASF began with a practical necessity: fixing a problem he encountered at work. W

AWS Weekly Roundup: Claude Opus 4.7 in Amazon Bedrock, AWS Interconnect GA, and more (April 20, 2026)

AWS Blog @ 2026-04-20 17:53:21

Claude Opus 4.7 arrives in Amazon Bedrock with improved agentic coding and a 1M token context window. AWS Interconnect reaches general availability with multicloud private connectivity and a new last-mile option. Plus, post-quantum TLS for Secrets Manager,

Cleaning Up Critical Infrastructure in FreeBSD

FreeBSD Foundation @ 2026-04-20 17:02:08

Open source infrastructure depends on more than new features. It also depends on the steady, often unseen work of identifying risks, improving processes, and making systems easier to maintain over time. That is exactly what the Beach Cleaning Project set

What Physical ‘Life Force’ Turns Biology’s Wheels?

Quanta Magazine @ 2026-04-20 17:00:16

The bacterial flagellar motor is finally understood after 50 years. In its workings, columnist Natalie Wolchover finds the essence of life. The post What Physical ‘Life Force’ Turns Biology’s Wheels? first appeared on Quanta Magazine

Designing Memory for AI Agents: inside Linkedin’s Cognitive Memory Agent

InfoQ @ 2026-04-20 16:59:00

LinkedIn introduces Cognitive Memory Agent (CMA), generative AI infrastructure layer enabling stateful, context-aware systems. It provides persistent memory across episodic, semantic, and procedural layers, supporting multi-agent coordination, retrieval

Helping Decision-Makers Say Yes to Kotlin Multiplatform (KMP)

Kotlin Blog @ 2026-04-20 16:39:57

This post was written by external contributors from Touchlab. KMP is a strategic platform In the current competitive landscape, the traditional mobile development model characterized by maintaining independent, duplicated codebases for iOS and Android is n

Helping Decision-Makers Say Yes to Kotlin Multiplatform (KMP)

Kotlin news @ 2026-04-20 16:39:57

This post was written by external contributors from Touchlab. KMP is a strategic platform In the current competitive landscape, the traditional mobile development model characterized by maintaining independent, duplicated codebases for iOS and Android is n

How did code handle 24-bit-per-pixel formats when using video cards with bank-switched memory?

old new thing @ 2026-04-20 16:00:00

You still have to use aligned accesses, even though the pixels might not be aligned. The post How did code handle 24-bit-per-pixel formats when using video cards with bank-switched memory? appeared first on The Old New Thing .

More on Newton’s diameter theorem

The Endeavour @ 2026-04-20 15:50:33

A few days ago I wrote a post on Newton’s diameter theorem. The theorem says to plot the curve formed by the solutions to f(x, y) = 0 where f is a polynomial in x and y of degree n. Next plot several parallel lines that cross the curve at n points a

The engineering method

AEON @ 2026-04-20 12:01:00

How humans built beautiful, lasting structures without science or mathematics, using only engineering rules of thumb - by Aeon Video Watch on Aeon

Fuel for thought

AEON @ 2026-04-20 12:00:00

A brain fit for the 21st century is one that understands – and respects – its own bioenergetic foundations - by Hannah Critchlow Read on Aeon

Quantum recurrences and the arithmetic of Floquet dynamics

Quantum Journal @ 2026-04-20 10:38:15

Quantum 10, 2074 (2026). The Poincaré recurrence theorem shows that conservative systems in a bounded region of phase space eventually return arbitrarily close to their initial state after a finite amount of ti

Caer con estilo

brucknerite @ 2026-04-20 10:00:00

La degradación gradual o controlada es una técnica de diseño empleada frecuentemente en ingeniería cuando se desea proteger la función principal del sistema a expensas de otras, consideradas secundarias. Pero ¿se usa en todos los casos en los que se deberí

Fly swatter

C0T0D0S0 @ 2026-04-20 08:45:00

New approach to block potentially malicious requests with less collateral damage

Jessica Chastain Says Apple TV Will Finally Release ‘The Savant’

Daring Fireball @ 2026-04-19 20:51:43

Marc Malkin, Variety: Jessica Chastain says Apple TV is finally going to release her political thriller series “The Savant.” [...] “Before it was like, ‘I don’t know if we’re going to see it,’ but now I can say, ‘We’re going to see it,’” Chastain to

WorkOS FGA: The Authorization Layer for AI Agents

Daring Fireball @ 2026-04-19 19:37:01

My thanks to WorkOS for sponsoring last week at DF. Every AI agent demo looks magical, but most hit a wall in enterprise deployment. It’s not model quality or latency. It’s authorization. Authentication proves an agent’s identity. Authorization defines it

Análisis de ajedrez | Antón cae del podio del Europeo cuando aspiraba al oro

Partidas ajedrez El País @ 2026-04-19 18:55:19

Tras un torneo magnífico, que incluye esta victoria muy brillante, el español perdió en la última ronda

How the JVM Optimizes Generic Code

Inside Java @ 2026-04-19 02:00:00

This video explores generics, JVM internals, and the road to Valhalla generics...

Podcast CB SyR 554: Inocentadas de 1 de abril, marcas auriñacienses, señales SETI y transporte de antimateria

La Ciencia de la Mula Francis @ 2026-04-18 21:05:05

Te recomiendo disfrutar del episodio 554 del podcast Coffee Break: Señal y Ruido [iVoox A, iVoox B], titulado “Papers de Broma; Signos; Memristores; SETI; Antimateria”, 16 abr 2026. «La tertulia semanal en la que […] La entrada Podcast CB SyR 554

★ ‘A Reading Room on Wheels, a Lover’s Lane, and, After 11 PM, a Flophouse’

Daring Fireball @ 2026-04-18 19:52:56

Photos from the New York Subway in the 1940s, by teenage Stanley Kubrick.

Marc Barceló gana el Mundial Rápido sub-10

Partidas ajedrez El País @ 2026-04-18 19:19:25

El español, aún con 9 años, sigue engrosando su lista de grandes éxitos con la resiliencia como principal virtud

Mac Mini and Mac Studio Supply Shortages

Daring Fireball @ 2026-04-18 18:48:37

Nicole Nguyen, writing for The Wall Street Journal (gift link): Mac Minis with larger-capacity RAM chips — a base M4 model with 32GB of RAM, starting at $999, and the M4 Pro models with 64GB of RAM, starting at $1,999 — are “currently unavailable” on

Gaussian distributed weights for LLMs

The Endeavour @ 2026-04-18 16:49:27

The previous post looked at the FP4 4-bit floating point format. This post will look at another 4-bit floating point format, NF4, and higher precision analogs. NF4 and FP4 are common bitsandbytes 4-bit data types. If you download LLM weights from Hugging

This Week’s Awesome Tech Stories From Around the Web (Through April 18)

Singularity Hub @ 2026-04-18 16:00:00

Every week, we scour the web for important, insightful, and fascinating stories in science and technology. The post This Week’s Awesome Tech Stories From Around the Web (Through April 18) appeared first on SingularityHub .

4-bit floating point FP4

The Endeavour @ 2026-04-18 03:08:54

In ancient times, floating point numbers were stored in 32 bits. Then somewhere along the way 64 bits became standard. The C programming language retains the ancient lore, using float to refer to a 32-bit floating point number and double to refer to a flo

Apple’s Developer Guidelines for Ratings and Review Prompts

Daring Fireball @ 2026-04-18 02:43:35

Apple Design: Avoid pestering people. Repeated rating requests can be irritating, and may even negatively influence people’s opinion of your app. Consider allowing at least a week or two between requests, prompting again after people demonstrate add

Follow-Up Regarding App Store Reviews, Which Are Definitely Busted

Daring Fireball @ 2026-04-18 02:31:16

I wrote yesterday: And the apps that do the right thing — like Godier’s Current  — and never solicit a review like a needy hustler are penalized. On Mastodon, Steven Troughton-Smith responded : Review prompts are the difference between a gre

Norwegian Man Cured of HIV by His Brother’s Stem Cells

Singularity Hub @ 2026-04-18 00:44:39

Fewer than 10 people worldwide have eradicated the virus with stem cells. But this case was special—no one knew his brother's cells carried a protective mutation until transplant day. The post Norwegian Man Cured of HIV by His Brother’s Stem Cell

AsiaBSDCon 2026 Trip Report – Saikeo

FreeBSD Foundation @ 2026-04-18 00:06:41

I was fortunate to receive travel sponsorship from the FreeBSD Foundation to attend the AsiaBSDCon 2026 conference and the FreeBSD Developer Summit in Taipei. The event was held over four days at the National Taiwan Normal University from March 19–22, 202

Schroedingers Honeypot

C0T0D0S0 @ 2026-04-17 21:03:00

How to use Fail2Ban to block potentially malicious requests and still reduce logging of PII

Au revoir: Day 5 of TED2026

TED Blog @ 2026-04-17 21:00:10

After 11 extraordinary years in Vancouver, TED’s time in our beloved British Columbia conference home is up. To celebrate the final day of TED2026, thinkers, doers and legends — mainstays of the TED community and newcomers alike — came together to cr