Networking and the Internet, from First Principles

162 faza 2026-07-11 12:37:57 UTC fazamhd.com Qwen Share 46

The internet uses packet-switching, routing data via decentralized protocols like TCP/IP, enabling scalable, reliable global communication. Rooted in ARPANET, it evolved from telegraph principles to a protocol-driven network with DNS and TLS for addressing and security, operating without central control.

We scaled PgBouncer to 4x throughput

6 saisrirampur 2026-07-11 15:28:57 UTC clickhouse.com Prefix Share 0

PgBouncer is single-threaded. A single process uses one CPU core, no matter how many the machine has. On a 16-vCPU box that means one core does all the connection pooling while the other fifteen sit idle, and the pooler starts capping throughput long before Postgres runs out of room. In ClickHouse Managed Postgres we run a fleet of PgBouncer processes, sized proportional to the available ...

Your code is fast – if you're lucky

98 chrka 2026-07-11 11:37:57 UTC tiki.li Qwen Share 50

Modern compilers like Clang optimize Quicksort with branchless code (csel/cmov), achieving ~6x speedup over original and nearly double std::sort's performance on macOS/M1. GCC generates slower branch-based code for equivalent logic, highlighting compiler-specific optimizations.

Einstein's relativity rules chemical bonds in heavy elements, new research shows

325 hhs 2026-07-10 22:37:57 UTC brown.edu Qwen Share 140

Brown University researchers discovered relativistic effects in heavy elements like bismuth blur sigma/pi bonds in triple bonds, challenging textbook models. Photoelectron spectroscopy revealed hybridized bonds, impacting chemistry education and applications in solar cells and quantum tech.

QuadRF can spot drones and see WiFi through my wall

664 speckx 2026-07-10 16:37:57 UTC jeffgeerling.com Qwen Share 217

The QuadRF is a Raspberry Pi-powered phased-array radio enabling advanced signal processing, WiFi analysis, and RF visualization, with potential for Moon-scale radio experiments. Despite a rough UI, its MIPI-based high-speed data transfer and modular design showcase impressive performance for SDR applications.

Google Search lets creators know more about their reach

55 herbertl 2026-07-11 08:37:57 UTC theverge.com Qwen Share 28

Google introduces a Search Console feature enabling creators to track search terms leading to their Instagram, TikTok, X, and YouTube content, offering insights into audience interactions. This update expands Google Search's role as a hub for creators to monitor how users discover their social media posts.

Speculations Concerning the First Ultraintelligent Machine (1965) [pdf]

32 zetalyrae 2026-07-11 13:37:57 UTC languagelog.ldc.upenn.edu Qwen Share 15

Designing ultraintelligent machines demands understanding brain-like subassemblies and semantics for efficient memory and meaning. These machines, leveraging parallel processing, could surpass human intelligence, necessitating control to manage their transformative impact.

Apple sues OpenAI, accuses ex-employees of stealing trade secrets

1338 stock_toaster 2026-07-10 21:37:57 UTC 9to5mac.com Qwen Share 720

Apple sues OpenAI for trade secret theft by ex-employees, including Tang Tan and Chang Liu, who allegedly stole confidential data and used it in hiring. The lawsuit highlights over 400 Apple alumni at OpenAI, led by Jony Ive, and claims OpenAI exploited Apple's proprietary info for hardware projects.

Otary – Image and Geometry Python Library Now Has Tutorials

64 poupeaua 2026-07-11 06:37:57 UTC alexandrepoupeau.com Full Share 1

This part of the documentation contains examples of what you one can do with Otary. Those examples are just meant to help you understand how to use Otary and not to be a complete reference. Just explore and have fun with all the possibilities that Otary has to offer.

Book: RISC-V System-on-Chip Design

29 xlmnxp 2026-07-11 09:37:57 UTC amazon.com Full Share 6

© 1996-2025, Amazon.com, Inc. or its affiliates

FCC approves test of space mirror to light night sky

57 reaperducer 2026-07-11 12:37:57 UTC theconversation.com Qwen Share 58

The FCC approved Reflect Orbital's solar-reflecting satellite, sparking health, safety, and environmental concerns, while SpaceX's massive satellite plans and unregulated "weird space stuff" threaten orbital sustainability and atmospheric integrity. Unchecked satellite expansion, including AI data centers and debris, risks collisions, ozone depletion, and greenwashing, highlighting the need ...

An update on residential proxies and the scraper situation

264 chmaynard 2026-07-10 20:37:57 UTC lwn.net Qwen Share 276

Websites are overwhelmed by scraper bots using residential proxies and compromised devices, evading detection through fake user behavior and coordinated attacks. Defensive measures like traffic analysis and temporary takedowns offer limited relief as attackers adapt, underscoring the need for ethical AI training data solutions.

An iroh powered smart fan

143 surprisetalk 2026-07-11 00:37:57 UTC iroh.computer Qwen Share 42

This guide demonstrates building a smart fan using an ESP32 and iroh, measuring temperature/humidity via a DHT22 sensor and controlling a fan locally or remotely via a browser-based WebAssembly GUI, without cloud dependency. The ESP32 connects to WiFi, uses iroh's relay for global access, and employs Rust-based RPC protocols for sensor data and fan control, with optional authentication for ...

Ghost Font: A font that humans can read but AI cannot

81 justswim 2026-07-11 09:37:57 UTC mixfont.com Qwen Share 71

Ghost Font uses motion and decoy messages in videos to create human-readable text invisible to AI models, unlike the now-obsolete ZXX font. It explores AI perception limits and potential applications like CAPTCHA, though encryption remains the most secure method.

SpaceX wants to launch 100k more Starlink satellites for 100x the bandwidth

244 CrankyBear 2026-07-10 18:37:57 UTC zdnet.com Qwen Share 853

SpaceX seeks FCC approval for 100,000 Gen3 Starlink satellites to deliver ultra-low-latency, multi-gigabit broadband, requiring hardware upgrades and facing interference risks. The plan aims to expand satellite internet access but encounters regulatory challenges, competition, and astronomical objections.

Why it's so difficult to produce American-made medical gloves

77 helsinkiandrew 2026-07-11 09:37:57 UTC bloomberg.com Full Share 70

Please make sure your browser supports JavaScript and cookies and that you are not blocking them from loading. For more information you can review our and .

The mask that compiles to nothing: how HotSpots JIT learned to reason about bits

51 rowbin 2026-07-11 05:37:57 UTC questdb.com Qwen Share 6

An optimizing compiler removes the redundant bitwise AND in (x << 2) & -4 because left-shifting x by 2 guarantees the two lowest bits are zero, matching -4's mask. C2 achieves this by tracking integer ranges and known bits, proving the AND operation has no effect.

Good Tools Are Invisible

499 theanonymousone 2026-07-10 15:37:57 UTC gingerbill.org Qwen Share 227

A good tool should be invisible, not celebrated for complexity or puzzles. Avoid reframing flaws as fun or identity; prioritize productivity over tribalism and honest evaluation.

AI 2040: Plan A

340 kschaul 2026-07-10 15:37:57 UTC ai-2040.com Qwen Share 388

Plan A advocates for an international agreement with transparent AI research and global collaboration to safely develop superintelligence, avoiding existential risks. Without such measures, unchecked AI races risk power concentration and catastrophic outcomes, urging immediate governance action.

The vintage beauty of Soviet control rooms (2018)

168 mvdtnz 2026-07-11 05:37:57 UTC designyoutrust.com Full Share 53

Just for the pleasure, a selection of vintage control rooms dating back to the Soviet era! A beautiful collection of control rooms filled with large buttons and analog dials, long before the democratization of computers and screens. If you want more awesome content, subscribe to Design You Trust Facebook page.

Late Bronze Age Collapse

399 dmonay 2026-07-10 15:37:57 UTC acoup.blog Qwen Share 278

The Late Bronze Age Collapse (c. 1220–1170 BC) saw interconnected states in the Eastern Mediterranean and Middle East decline or collapse, marked by site destructions and political fragmentation. Causes remain debated but likely include climate shifts, warfare, and economic strain, with uneven regional impacts.

Digital Deli, 1984 book by early PC hackers and enthusiasts

6 achairapart 2026-07-11 11:37:57 UTC atariarchives.org Prefix Share 0

Digital Deli The Comprehensive, User-Lovable Menu of Computer Lore, Culture, Lifestyles and Fancy by The Lunch Group & Guests Edited by Steve Ditlea published 1984 Digital Deli is copyright ©1984. It is posted on www.atariarchives.org with the approval of Steve Ditlea, editor of the book, for archival purposes only. Commercial reproduction or use of any of this material without the ...

The tech of 'Terminator 2' – an oral history (2017)

240 markus_zhang 2026-07-10 17:37:57 UTC vfxblog.com Qwen Share 81

In 1991, ILM pioneered CGI tools like 'Make Sticky' and 'Body Sock' to create Terminator 2's liquid metal T-1000, overcoming limited resources and nascent tech. Artists and developers collaborated intensively, blending innovation with practical problem-solving, cementing the film's legacy as a VFX milestone.

Silent speech with ultrasound

85 chrwn 2026-07-11 00:37:57 UTC alephneuro.com Qwen Share 18

Our system achieves 15.6% word error rate using 50 hours of ultrasound tongue data, outperforming lip-reading with 12.5% on 1M hours. Challenges include hardware miniaturization and non-American accents, but it generalizes across speakers and shows promise for silent speech tech.

Combustion engine web-based simulator

211 mytuny 2026-07-10 17:37:57 UTC combustionlab.net Full Share 72

Crank-angle-resolved combustion engine simulator: build an engine, watch it run, and read real thermodynamics — P–V diagrams, dyno curves, knock prediction and more.

Alternate clock designs and time systems

179 ethanpil 2026-07-10 15:37:57 UTC serialc.github.io Qwen Share 102

The article critiques the traditional 24-hour time system's inconsistency and explores alternative metric-based time designs, like decimal or hexadecimal formats, for simpler calculations and readability, while acknowledging challenges in adoption and accuracy. It invites suggestions for custom time systems, emphasizing flexibility in reimagining how we measure and display time.

After 7 years in production, Scarf has reluctantly moved away from Haskell

191 aviaviavi 2026-07-10 15:37:57 UTC avi.press Qwen Share 229

A long-time Haskell advocate, the author moved Scarf's new development to Python due to AI-driven workflows and Haskell's compilation/ecosystem bottlenecks, urging the community to prioritize AI-era optimizations like faster builds, better tooling, and agent-friendly design to remain relevant.

Snails' teeth beats spider silk as nature's strongest material (2015)

215 simonebrunozzi 2026-07-10 17:37:57 UTC smithsonianmag.com Qwen Share 161

Marine snails' teeth, composed of goethite nanofibers and protein, are Earth's strongest natural material, exceeding spider silk and Kevlar. Though outmatched by graphene, they rival top carbon fibers, while rare materials like lonsdaleite surpass diamond's hardness.

Inference Optimization for MiMo v2.5: Pushing Hybrid SWA Efficiency to the Limit

103 theanonymousone 2026-07-10 21:37:57 UTC mimo.xiaomi.com Qwen Share 39

MiMo-V2.5 uses Hybrid SWA and MoE to cut KVCache by 7x, boosting efficiency in long-context and multimodal tasks. Optimizations like tiered caching, SWA-aware systems, and GCache integration enhance throughput and hit rates, achieving 93%+ server-side efficiency.

Show HN: Richest people in the world by wealth creation instead of ownership

31 sakshyampatro 2026-07-11 10:37:57 UTC anti-forbes-list.vercel.app Full Share 23

For others = company wealth creation beyond T-bill returns (Bessembinder baseline + live market delta), attributed by founding stake, minus the founder’s current net worth. Multiple = created ÷ kept. Negative rows are real: those companies have destroyed shareholder wealth since listing. Full formula and every caveat: methodology v1.1.0.