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Async I/O on Linux in databases

news.ycombinator.com Jeremy Tregunna 2025-07-20 11:20:02

I've been working on a complex multi-model database for a few weeks now, and recently I took time to simplify and test out an idea I had on a simple key-value database. I started with the basics: A hash table in memory, a simple append-only log for persistence and durability, and the classic fsync() call after every write to the log for durability. It worked, but wasn't as fast as it could be. In Kevo, that's the approach I use, but in Klay (not public yet, but will be open sourced when ready)

Topics: completion intent io_uring operations wal

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Apple @ Work: Device management migration arrives with iOS 26 and macOS 26

9to5mac.com Bradley C 2025-07-20 09:00:00

Apple @ Work is exclusively brought to you by Mosyle, the only Apple Unified Platform. Mosyle is the only solution that integrates in a single professional-grade platform all the solutions necessary to seamlessly and automatically deploy, manage, and protect Apple devices at work. Over 45,000 organizations trust Mosyle to make millions of Apple devices work-ready with no effort and at an affordable cost. Request your EXTENDED TRIAL today and understand why Mosyle is everything you need to work w

Topics: apple device devices migration work

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EPA says it will eliminate its scientific research arm

news.ycombinator.com Lisa Friedman 2025-07-20 00:00:56

The Environmental Protection Agency said on Friday that it would eliminate its scientific research arm and begin firing hundreds of chemists, biologists, toxicologists and other scientists, after denying for months that it intended to do so. The move underscores how the Trump administration is forging ahead with efforts to slash the federal work force and dismantle federal agencies after the Supreme Court allowed these plans to proceed while legal challenges unfold. Government scientists have b

Topics: administration environmental federal office research

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Best Chest Strap Heart-Rate Monitors for Your 2025 Workouts, Fitness Expert-Approved

cnet.com See Full Bio 2025-07-20 11:08:00

Why we like it: The Polar H10 is ideal for outdoor activities. You'll need to download the Polar Beat app to get the most out of it. The app is available for both iOS and Android and uses Bluetooth and ANT Plus connectivity to pair with different devices. The Polar H10 can connect to two Bluetooth devices at once, so you can connect it to both your smartwatch and a compatible piece of fitness equipment, like some treadmills or exercise bikes. The heart-rate monitor is easy to clip on and adjust

Topics: heart monitor polar rate training

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EPA says it will eliminate its scientific reseach arm

news.ycombinator.com Lisa Friedman 2025-07-20 15:00:56

The Environmental Protection Agency said on Friday that it would eliminate its scientific research arm and begin firing hundreds of chemists, biologists, toxicologists and other scientists, after denying for months that it intended to do so. The move underscores how the Trump administration is forging ahead with efforts to slash the federal work force and dismantle federal agencies after the Supreme Court allowed these plans to proceed while legal challenges unfold. Government scientists have b

Topics: administration environmental federal office research

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Netflix is already using generative AI in its original shows

engadget.com Unknown 2025-07-21 03:12:09

Netflix admitted during its earnings call on Thursday that it used generative AI to create VFX in The Eternaut, a Netflix original from Argentina that was released in April 2025. The company's co-CEO Ted Sarandos said that generative AI was specifically used for a VFX shot in the post-apocalyptic drama, but the move is one of several ways Netflix is embracing AI. According to Sarandos, the creators of The Eternaut wanted to include a shot of building collapsing in Buenos Aires, and rather than

Topics: ai create generative netflix sarandos

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Trump’s Cabinet Is Cashing in on Crypto

gizmodo.com Aj Dellinger 2025-07-21 03:00:21

Congress’s big “Crypto Week” might have faded into the background a bit due to cryptic messages Donald Trump left in a birthday note to Jeffrey Epstein, but Republicans in the House and Senate did, in fact, manage to pass a couple of laws that will establish loose, industry-friendly regulations for cryptocurrency. Which means it is a perfect time to be reminded that the Trump administration is packed with people who stand to benefit from cryptocurrency being mainstreamed. Trump himself, of cour

Topics: administration crypto digital million trump

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Chinese hackers breached National Guard to steal network configurations

bleepingcomputer.com Unknown 2025-07-20 09:02:57

The Chinese state-sponsored hacking group known as Salt Typhoon breached and remained undetected in a U.S. Army National Guard network for nine months in 2024, stealing network configuration files and administrator credentials that could be used to compromise other government networks. Salt Typhoon is a Chinese state-sponsored hacking group that is believed to be affiliated with China's Ministry of State Security (MSS) intelligence agency. The hacking group has gained notoriety over the past tw

Topics: configuration government network salt typhoon

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How to Get Foreign Keys Horribly Wrong

news.ycombinator.com Haki Benita 2025-07-18 04:36:08

Constraints keep the integrity of your system and prevent you from shooting yourself in the foot. Foreign keys are a special type of constraint because, unlike unique, check, and primary keys, they span more than one relation. This makes foreign keys harder to enforce and harder to get right. In this article, I demonstrate common pitfalls, potential optimizations, and implicit behavior related to foreign keys. Table of Contents Watch 📺 This article is inspired by a talk I gave at DjangoCon EU

Topics: index migration models product user

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ICE is getting unprecedented access to Medicaid data

news.ycombinator.com Leah Feiger 2025-07-21 13:15:58

Immigration and Customs Enforcement officials are getting access to the personal data of nearly 80 million people on Medicaid in order to acquire "information concerning the identification and location of aliens in the United States,” according to an information exchange agreement viewed by WIRED. The agreement, which is titled “Information Exchange Agreement Between the Centers for Medicare and Medicaid Services and the Department of Homeland Security (DHS) for Disclosure of Identity and Locat

Topics: agreement data immigration information medicaid

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Netflix’s first show with generative AI is a sign of what’s to come in TV, film

arstechnica.com Unknown 2025-07-21 15:29:04

Netflix used generative AI in an original, scripted series that debuted this year, it revealed this week. Producers used the technology to create a scene in which a building collapses, hinting at the growing use of generative AI in entertainment. During a call with investors yesterday, Netflix co-CEO Ted Sarandos revealed that Netflix's Argentine show The Eternaut, which premiered in April, is "the very first GenAI final footage to appear on screen in a Netflix, Inc. original series or film.” S

Topics: ai effects generative netflix series

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The Art of Roland-Garros

news.ycombinator.com Juan Buis 2025-07-18 07:40:17

All of the tournament's iconic posters in one place. All posters are the copyright of their respective artists and the Fédération Française de Tennis. This site is an independent fan gallery and is not affiliated with Roland-Garros or the Fédération Française de Tennis.

Topics: fan française fédération posters tennis

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ICE Is Getting Unprecedented Access to Medicaid Data

news.ycombinator.com Leah Feiger 2025-07-21 23:15:58

Immigration and Customs Enforcement officials are getting access to the personal data of nearly 80 million people on Medicaid in order to acquire "information concerning the identification and location of aliens in the United States,” according to an information exchange agreement viewed by WIRED. The agreement, which is titled “Information Exchange Agreement Between the Centers for Medicare and Medicaid Services and the Department of Homeland Security (DHS) for Disclosure of Identity and Locat

Topics: agreement data immigration information medicaid

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We Consulted Fitness Experts to Learn the Truth About Vibration Plates for Weight Loss

cnet.com See Full Bio 2025-07-22 07:00:00

Step aside mom jeans, scrunchies and denim on denim, there's another trend making a comeback. Vibration plates are trending once again. Similar to the mid-20th-century vibrating belt machines, vibration plates have been said to provide the body with various benefits and can even be a tool for weight loss. But is the hype backed by science and expert opinions, or is it all social media hearsay? To find out if you should add a vibration plate to your workout routine, we asked personal trainers an

Topics: body exercise plate plates vibration

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Trump's firing of Democratic FTC commissioner was unlawful, judge rules

engadget.com Unknown 2025-07-22 11:00:29

Rebecca Kelly Slaughter, one of the Democratic FTC Commissioners President Trump had fired back in March, said she looks forward to getting back to work. US District Judge Loren AliKhan has just ruled that her removal from the agency was "unlawful and without legal effect" and that she was still a "rightful member" of the commission. The judge explained that the firings violated protections that prevent a president from unilaterally removing officials at independent agencies. In her statement a

Topics: commissioners court democratic ftc president

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Resolve (YC W15) Is Hiring an Operations and Billing Lead for Construction VR

news.ycombinator.com Unknown 2025-07-22 11:00:47

Location: Remote Type: Full-time About Us Resolve is an 11-person SaaS startup helping construction companies and builders review faster. Our clients include general contractors, specialty subcontractors, owner operators and engineering companies—companies that build the world around us. We’re growing fast and looking for a detail-oriented, proactive Billing and Operations Lead to take charge of key administrative processes that keep our business humming. What You’ll Do You’ll own and impro

Topics: billing customers operations procurement team

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Netflix boss says AI effects used in show for first time

feeds.bbci.co.uk Unknown 2025-07-22 20:55:08

Netflix boss says AI effects used in show for first time 2 hours ago Share Save Osmond Chia Business reporter, BBC News Reporting from Singapore Share Save Netflix Argentine actor Ricardo Darín in the Netflix show The Eternauts Netflix says it has used visual effects created by generative artificial intelligence (AI) on screen for the first time in one of its original TV shows. The streaming giant's co-CEO Ted Sarandos said AI, which produces videos and images based on prompts, was used to cr

Topics: ai effects generative netflix used

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ChatGPT can now browse and perform web-based tasks for you

9to5mac.com Marcus Mendes 2025-07-23 07:34:40

In a quick live stream today, OpenAI announced ChatGPT agent, which improves on its promising, but limited Operator feature announced a few months ago. Here’s how it works Operator meets Deep Research What OpenAI did was combine Operator, which already had agentic browsing capabilities, and Deep Research, which can quickly consume, understand, and infer on website content. The result is an agent that gets spun up on a virtual machine when you assign it a task, and then it just… goes. It can

Topics: agent chatgpt openai operator users

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How Android phones became an earthquake warning system

arstechnica.com Unknown 2025-07-23 07:45:36

If you're the owner of an Android phone and live in a seismically active region, there's a chance your phone has popped up an unusual warning. Not one that asks for permission to share personal information, or potential malware, but something far more serious: There's an earthquake nearby, and you have up to a minute or two to get to a safer location. Starting in the US in 2020 and expanding internationally since, the system is called Android Earthquake Alert (AEA), and it's on by default in mo

Topics: alert android earthquake phone vibrations

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ICE Is Getting Unprecedented Access to Medicaid Data

wired.com Leah Feiger 2025-07-23 07:44:43

Immigration and Customs Enforcement officials are getting access to the personal data of nearly 80 million people on Medicaid in order to acquire "information concerning the identification and location of aliens in the United States,” according to an information exchange agreement viewed by WIRED. The agreement, which is titled “Information Exchange Agreement Between the Centers for Medicare and Medicaid Services and the Department of Homeland Security (DHS) for Disclosure of Identity and Locat

Topics: agreement data immigration information medicaid

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OpenAI unveils ‘ChatGPT agent’ that gives ChatGPT its own computer to autonomously use your email and web apps, download and create files for you

venturebeat.com Carl Franzen 2025-07-23 13:16:33

Want smarter insights in your inbox? Sign up for our weekly newsletters to get only what matters to enterprise AI, data, and security leaders. Subscribe Now OpenAI isn’t letting the delay of its open source AI model slow it down on shipping other features. Today, the company is unveiling ChatGPT agent, a feature that allows its AI chatbot to autonomously browse the web, conduct extensive research, download and create new files for its human users using its own virtual computer. Come again? Ch

Topics: agent chatgpt openai operator user

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Razer’s new Pokémon collab is not very effective

theverge.com Cameron Faulkner 2025-07-23 15:20:58

Razer’s new Pokémon collaboration is a missed opportunity. The four PC gaming peripherals in this lineup are simply reskinned versions of products that already exist, and which cost $20 to $40 more than their all-black counterparts. You really should be getting more for your money here. For example, the themed BlackWidow V4 X keyboard should include at least one highly detailed custom keycap (switching out Alt for pokéball designs doesn’t cut it). Maybe the Kraken V4 X headset could have includ

Topics: collaboration pokémon razer themed v4

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July Mortgage Rate Forecast: Buyers Retreat as Rates Rebound

cnet.com See Full Bio 2025-07-23 21:36:00

Buyers should keep an eye on the possibility of rate cuts in the next few months. Tharon Green/CNET Every time the average 30-year fixed mortgage rate dips, even by a few tenths of a percentage point, prospective homebuyers jump to take advantage. As soon as rates move up again, mortgage activity goes down. The past few weeks offer a textbook example. When rates fell to around 6.7% (the lowest level in months) in early July, applications for home loans promptly ticked up, according to the Mort

Topics: inflation market mortgage rate rates

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A Meteor Impact May Have Caused a Giant Landslide in the Grand Canyon

gizmodo.com Margherita Bassi 2025-07-24 15:30:00

Researchers have long puzzled over the presence of driftwood and lake sediments in Stanton’s Cave in the eastern Grand Canyon, whose mouth sits 150 feet (45.7 meters) above the river. How could the material possibly have reached that height? According to Karl Karlstrom, a geologist from the University of New Mexico, it would have had to be carried by flood levels ten times bigger than any seen in the past several thousand years. An international team of researchers proposes a surprising chain o

Topics: crater impact meteor river years

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Trump Appears to Go TACO on Rumors He’ll Fire Fed Chair Jerome Powell

gizmodo.com Matt Novak 2025-07-25 17:35:02

Reports leaked Wednesday that President Donald Trump was getting ready to fire the chairman of the Federal Reserve, Jerome Powell. The news caused markets to dip, but TACO, the popular Wall Street acronym that stands for Trump Always Chickens Out, appears to be the dish of the day, as the president denied he was going to fire Powell while speaking to reporters in the White House. “He should have cut interest rates a long time ago. Europe has cut ’em 10 times in the short period of time, and we

Topics: job powell rates said trump

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The Download: Veo 3’s subtitles problem, and the future of our planet’s resources

technologyreview.com Rhiannon Williams 2025-07-25 16:10:00

Google’s generative video model Veo 3 has a subtitles problem As soon as Google launched its latest video-generating AI model at the end of May, creatives rushed to put it through its paces. Released just months after its predecessor, Veo 3 allows users to generate sounds and dialogue for the first time. It sparked a flurry of hyperrealistic eight-second clips stitched together into ads, ASMR videos, imagined film trailers, and humorous street interviews. But others quickly found that in som

Topics: narrated review subtitles technology veo

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Google adds AI-generated summaries to Discover

engadget.com Unknown 2025-07-26 19:43:41

Google is bringing AI‑generated summaries to Discover, the personalized stream of articles and videos found in the Google app curated based on a user's interests. The search giant remains undeterred by the imperfect nature of AI Overviews, or what it might mean for publishers whose content largely makes up Google's search results. TechCrunch has reported that some Android and iOS users in the US are seeing cards containing AI‑generated summaries on their Discover page. These cards appear with n

Topics: ai generated google like search

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Europol disrupts pro-Russian NoName057(16) DDoS hacktivist group

bleepingcomputer.com Unknown 2025-07-26 19:07:30

An international law enforcement operation dubbed "Operation Eastwood" has targeted the infrastructure and members of the pro-Russian hacktivist group NoName057(16), responsible for distributed denial-of-service (DDoS) attacks across Europe, Israel, and Ukraine. Operation Eastwood was led by Europol and Eurojust with support from 12 countries. It took place on July 15, 2025, and targeted the systems and individuals behind the group's activities. NoName057(16) is a pro-Russian hacking group tha

Topics: attacks germany group noname057 operation

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Trump Lets Polymarket Off the Hook, Ends Probe Into Crypto Betting Platform

gizmodo.com Aj Dellinger 2025-07-28 15:35:08

If you bet “Donald Trump ends an investigation into a Peter Thiel-backed cryptocurrency platform,” you can claim your winnings. According to Bloomberg, two investigations into the prediction market Polymarket have been shut down by the Trump administration, just in time for Republican lawmakers’ planned “Crypto Week.” The probes, which were launched toward the end of the Biden administration, included an investigation by the Department of Justice into whether Polymarket was allowing U.S.-based

Topics: administration just polymarket trump week

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Mira Murati’s Thinking Machines Lab is worth $12B in seed round

techcrunch.com Maxwell Zeff 2025-07-28 15:59:29

Thinking Machines Lab, the AI startup founded by OpenAI’s former chief technology officer Mira Murati, officially closed a $2 billion seed round led by Andreessen Horowitz on Monday, a company spokesperson told TechCrunch. The deal, which includes participation from NVIDIA, Accel, ServiceNow, CISCO, AMD, and Jane Street, values the startup at $12 billion, the spokesperson said. Several outlets reported in June that Thinking Machines Lab was close to closing this $2B funding round at a $10 bill

Topics: ai lab machines murati thinking

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Latest Tech News

Async I/O on Linux in databases

Apple @ Work: Device management migration arrives with iOS 26 and macOS 26

EPA says it will eliminate its scientific research arm

Best Chest Strap Heart-Rate Monitors for Your 2025 Workouts, Fitness Expert-Approved

EPA says it will eliminate its scientific reseach arm

Netflix is already using generative AI in its original shows

Trump’s Cabinet Is Cashing in on Crypto

Chinese hackers breached National Guard to steal network configurations

How to Get Foreign Keys Horribly Wrong

ICE is getting unprecedented access to Medicaid data

Netflix’s first show with generative AI is a sign of what’s to come in TV, film

The Art of Roland-Garros

ICE Is Getting Unprecedented Access to Medicaid Data

We Consulted Fitness Experts to Learn the Truth About Vibration Plates for Weight Loss

Trump's firing of Democratic FTC commissioner was unlawful, judge rules

Resolve (YC W15) Is Hiring an Operations and Billing Lead for Construction VR

Netflix boss says AI effects used in show for first time

ChatGPT can now browse and perform web-based tasks for you

How Android phones became an earthquake warning system

ICE Is Getting Unprecedented Access to Medicaid Data

OpenAI unveils ‘ChatGPT agent’ that gives ChatGPT its own computer to autonomously use your email and web apps, download and create files for you

Razer’s new Pokémon collab is not very effective

July Mortgage Rate Forecast: Buyers Retreat as Rates Rebound

A Meteor Impact May Have Caused a Giant Landslide in the Grand Canyon

Trump Appears to Go TACO on Rumors He’ll Fire Fed Chair Jerome Powell

The Download: Veo 3’s subtitles problem, and the future of our planet’s resources

Google adds AI-generated summaries to Discover

Europol disrupts pro-Russian NoName057(16) DDoS hacktivist group

Trump Lets Polymarket Off the Hook, Ends Probe Into Crypto Betting Platform

Mira Murati’s Thinking Machines Lab is worth $12B in seed round

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