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Every year there's a new "must-learn" technology—Spark, Kafka, Databricks, Snowflake, AI, LLMs... But one skill has remained essential through every wave of innovation: SQL. When I first started learning Data Engineering, I thought SQL was just another box to check. "Learn some SELECT statements, a few JOINs, and move on to Python." I couldn't have been more wrong. The more real-world projects I worked on, the more I realized that SQL isn't just a language—it's how data eng...

I've just published a practical series about building a music recommendation system using ML.NET and ASP.NET Core. The goal wasn't just to train a recommendation model, but to explain the complete workflow, from understanding how recommendation systems work to evaluating whether the model is actually good enough to be used in a real application. The series covers: 🎸 How recommendation systems work 📊 How to evaluate a recommendation model 🤖 Training a rock music recommender with ML.NET ...

How to Contribute to an Open-Source AI Trading Bot If you want to contribute to an open-source AI trading bot — and build on a real, running system instead of a toy — this guide shows you exactly how. The Claude-powered crypto bot from Part 1 is MIT-licensed on GitHub, and the most interesting problems in it are wide open. You don’t need to be a quant or an ML expert; there’s meaningful work here for developers, traders, writers, and testers alike. 👋 New to open source? That’s fine — ...

Every AI tool remembers you a little. None of them remember you to each other. The context I build up in ChatGPT is invisible to Claude, and my Cursor sessions know nothing about either. And the worst version of it: having a genuinely useful long conversation, then watching it sink into an infinite sidebar where I'd never find it again. So I spent the last stretch building Mind Silo — one memory layer that all of them read and write to. How it works Capture. A Chrome MV3 extens...

Analogy Imagine you're sitting in a coffee shop. You connect to the free Wi-Fi. You decide to log into your bank account. Your browser sends your username and password over the network. Now imagine every person connected to that same Wi-Fi can read everything you're sending. Your password. Your balance. Your account number. Terrifying. Yet that's exactly how the early Internet worked. There was no encryption. No certificates. No secure connections. Just...

I run a public board that probes 16 LLMs on a frozen 35-task suite, once a day, and keeps every score. When a model drops against its previous run, it opens a GitHub issue by itself and writes me a draft post. Between 21 and 24 July it did that four times: 23 Jul Gemini 3.5 Flash -11.4 pts 24 Jul Gemini 3.1 Pro -2.9 pts 21 Jul Grok 4.3 -5.7 pts 22 Jul Llama 3.3 70B -2.9 pts Four regressions in four days, across three labs. That's a post that write...

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SRE at Apple writing about AI infrastructure, Kubernetes, and cloud reliability.Real production experience. Building tools & community at AI/DevOps intersection

Learn everything you need to know about Developer Tools via these 314 free HackerNoon blog posts.

7/24/2026: Trending stories on Hackernoon today!

World Foundation raised $52.5 million in a Pantera-led locked WLD sale on its third anniversary. Inside the Vercel, Okta, and Tinder distribution thesis.

Three startups—RecallNote , ACHLS Eternal, and Rivver Accountant—featured in HackerNoon Projects of the Week for proving real-world usefulness.

On this episode of Uncanny Valley, we dive into accusations that China’s Moonshot AI stole from  Anthropic, and how the US Army needs to cut back on AI use.

This climate phenomenon could cause a massive global temperature spike and cause economic losses of $10 trillion by 2032.

Meta is upgrading its AI chatbot with new productivity features in a bid to compete with rivals like Gemini, ChatGPT, and Claude. The update will allow Meta AI to tap into your calendar to help you plan events and generate daily briefings, as well as perform in-depth research that you can steer as it progresses. […]

Weeks after Anthropic's latest toe-to-toe with the US government, and days after an OpenAI security incident that dominated tech industry discussions, Anthropic on Thursday released its newest model, Claude Opus 5. The company said in a release that Opus 5 "comes close to the capabilities of Claude Fable 5 in many domains" and is much […]

The web and Google once had a deal: Google collects data and indexes webpages and in exchange sends oceans of traffic to websites. The deal wasn't perfect and certainly made Google more money than it made the websites, but it worked for a long time. Now, however, the deal seems to be dead. And the […]

After teasing the series with some first-look images yesterday, Amazon is finally properly unveiling its Blade Runner streaming series. Called Blade Runner 2099, the show hits Prime Video on November 25th with all eight episodes dropping at once. We also got the first trailer for the series, which is full of Blade Runner staples: a […]

Roku has increased prices across its streaming hardware, with the cheapest HD Streaming Stick now priced at $39.99 instead of $29.99, as first reported by The Desk. The price hike affects all of Roku's other devices as well, with some increasing by as much as $50. Here's a rundown of the changes: Roku is currently […]

In response to a report that Nothing is planning to "exit 12 markets as global shipments decline," Nothing cofounder Akis Evangelidis said the company is "reorganizing" and laying off some of its staff, but that "the reported numbers are way overblown." Evangelidis disputed a claim about underwhelming sales for Nothing's Phone 4B, saying it "sold […]

After selling a barely disguised version of the hit DJI Osmo Pocket 3 in the United States last year, Xtra Technology seemed ready to sneak in its version of the new dual-lens Osmo Pocket 4 Pro, too. But today, Xtra has abruptly removed the new Xtra Muse 2 Pro from its website landing page, is […]

Midjourney, which has gone from generating AI cat images to full-body ultrasound scans, is getting into a new field: astrology. The AI startup announced on Thursday that it has acquired the personalized astrology app Co-Star, as reported earlier by Bloomberg. Co-Star is a free app that offers daily horoscopes and allows you to check your […]

Qualcomm sent a letter to customers on Friday warning of plans to increase its prices by "a percentage in the double digits," Bloomberg reports. The price hikes will go into effect starting with products shipped after September 1st. Qualcomm claims it has "exhausted its ability to absorb higher costs from suppliers," as ongoing component shortages […]

Meta's smart glasses have been a PR headache for the company. Public backlash has been swift, and fierce; people are concerned about the erosion of privacy and expansion of surveillance. Some especially bad actors are using the glasses to film themselves "pranking" random strangers. Women have become unsuspecting social media content for men filming themselves […]

Sam Altman's side project — which seeks to scan the world's eyeballs and turn them into unique digital identifiers — has raised some fresh cash through a crypto sale.

Chinese AI lab Moonshot’s open model Kimi went viral this week for reasons that had less to do with the model itself and more to do with how the U.S. AI industry reacted to it. Meanwhile, an unreleased OpenAI model wandered outside its test environment and ended up connected to a real security breach at Hugging Face — a reminder […]