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How We Saved $500,000 Per Year by Rolling Our Own “S3” | by Miedwar Meshbesher | Oct, 2025

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💥 Check out this trending post from Hacker News 📖 📂 Category: 📌 Key idea: 12 min read·Oct 19, 2025tl;drPress enter or click to view image in full sizeCamera → N3 → S3 FallbackWe used S3 as a landing zone for Nanit’s video processing pipeline (baby sleep-state inference), but at thousands of uploads/second, S3’s PutObject request fees dominated costs. Worse, S3’s auto-cleanup (Lifecycle rules) has a 1-day minimum; we paid for 24 hours of storage on objects processed in ~2 seconds. We built N3, a Rust-based in-memory landing zone that eliminates both issues, using S3 only as an overflow buffer.Result:…

How I turned Zig into my favorite language to write network programs in

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✨ Explore this must-read post from Hacker News 📖 📂 Category: ✅ Key idea: 2025-10-26 I’ve been watching the Zig language for a while now, given that it was created for writing audio software (low-level, no allocations, real time). I never paid too much attention though, it seemed a little weird to me and I didn’t see the real need. Then I saw a post from Andrew Kelley (creator of the language) on Hacker News, about how he reimplemented my Chromaprint algorithm in Zig, and that got me really interested. I’ve been planning to rewrite AcoustID’s inverted index for a…

ICE Will Use AI to Surveil Social Media

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💥 Check out this must-read post from Hacker News 📖 📂 Category: 💡 Main takeaway: Immigration and Customs Enforcement has inked a new $5.7 million contract for AI-driven social media surveillance software, according to federal procurement records reviewed by The Lever. It’s the latest move in the agency’s ongoing quest to build out a social media surveillance dragnet. The five-year contract with government technology middleman Carahsoft Technology, made public in September, provides Immigration and Customs Enforcement (ICE) licenses for a product called Zignal Labs, a social media monitoring platform used by the Israeli military and the Pentagon. An informational pamphlet marked confidential but…

#29: Poison, Poison Everywhere – by John Loeber

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✨ Discover this must-read post from Hacker News 📖 📂 Category: 📌 Main takeaway: When I was in high school, my teacher once told us a crazy story. When he started teaching in Northern England in the late 1970s, he and the other teachers would often talk in the break room about how their students seemed to be getting dumber every year. It was so strange — the kind of thing you might say with a worried laugh but no explanation. Smart primary schoolers turned into middle schoolers that just didn’t get things.Years later, he connected the dots: the school…

jqssun/android-helium-browser: Private and secure Android browser with support for browser extensions.

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🚀 Check out this awesome post from Hacker News 📖 📂 Category: ✅ Main takeaway: An experimental Chromium-based web browser for Android with extensions support, based on Navigate to Chrome Web Store, then enable Desktop site by selecting the menu button ⋮ in the top right corner and ensure the option is checked. Select Okay and proceed as normal if prompted with: The Chrome Web Store is only available on desktop. Once you select Add to Chrome, the extension will be installed in the background until the button changes into Remove from Chrome. To view and access the debug URLs,…

The Apple Network Server MacOS ROMs have resurfaced

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🔥 Check out this insightful post from Hacker News 📖 📂 Category: 📌 Here’s what you’ll learn: The 1996 Apple Network Server was Apple's first true Unix-through-and-through server (the Apple Workgroup Server 95, actually a Quadra 950 with a special PDS card limited to A/UX, doesn't really count) and through a complex history came to run IBM's AIX as its native operating system. I actually had an ANS 500 when it was almost new, in 1998, and it ran Floodgap until 2012. It is still in my collection and still runs, along with an ANS 700 I later acquired and…

dvir-biton/MyraOS: A x86 Unix-like OS made entirely from scratch

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🔥 Read this must-read post from Hacker News 📖 📂 Category: 📌 Main takeaway: A x86 Unix-like OS made entirely from scratch. Features Protected mode (GDT/IDT, ISRs/IRQs) Paging and virtual memory Memory management Heap and dynamic memory User-mode (ring 3) and kernel mode (ring 0) Processes and scheduling Drivers (PIT, RTC, Keyboard, Mouse, Framebuffer, PATA) ext2 filesystem UI compositor with window widgets, labels, icons, buttons, and even a custom-made font ELF loader, which gives you the ability to run real apps All these features let you run real games, just like Doom, giving the preloaded Doom port in MyraOS ready…

Making the Electron Microscope

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🚀 Explore this awesome post from Hacker News 📖 📂 Category: 📌 Main takeaway: Biological structures exist across a vast range of scales. At one end are whole organisms, varying in size from bacteria only a few micrometers across to mammals measured in feet. These can be seen with the naked eye or with simple light microscopes, which have been in use since the mid-1600s. At the smaller end, however, are atoms, amino acids, and proteins, spanning angstroms to nanometers in size.Observing molecules at this smaller scale allows us to untangle the finer mechanisms of life: how individual neurons connect…

Smartphones manipulate our emotions and trigger our reflexes — no wonder we’re addicted

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🔥 Read this awesome post from Hacker News 📖 📂 Category: ✅ Key idea: The frequency and length of daily phone use continues to rise, especially among young people. It’s a global concern, driving recent decisions to ban phones in schools in Canada, the United States and elsewhere. À lire aussi : School smartphone bans reflect growing concern over youth mental health and academic performance Social media, gaming, streaming and interacting with AI chatbots all contribute to this pull on our attention. But we need to look at the phones themselves to get the bigger picture. As I argue in…

Alzheimer’s disrupts circadian rhythms of plaque-clearing brain cells – WashU Medicine

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🔥 Explore this insightful post from Hacker News 📖 📂 Category: 💡 Key idea: Visit the News Hub Mouse study shows how disease reprograms genes in specialized cells involved in amyloid removalGetty ImagesIn a study published in Nature Neuroscience, researchers at WashU Medicine found in mice that amyloid accumulations in the brain — which are characteristic of Alzheimer’s disease — threw off the daily rhythms of hundreds of genes in brain cells known as microglia and astrocytes in ways that were different from what aging alone caused. Alzheimer’s disease is notorious for scrambling patients’ daily rhythms. Restless nights with little…