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Japan develops a method to recover up to 90% of lithium from used EV batteries

https://tech.supercarblondie.com/japan-recovers-up-to-90-of-lithium-from-used-ev-batteries/
91•donohoe•1h ago•19 comments

The Git history command deserves more attention

https://lalitm.com/post/git-history/
120•turbocon•3h ago•74 comments

Fundamentals of Wireless Communication

https://web.stanford.edu/~dntse/wireless_book.html
53•teleforce•1h ago•2 comments

The Economics of Recursive Self-Improvement [pdf]

https://elasticity.institute/rsi-paper.pdf
33•apsec112•2h ago•1 comments

Building and shipping Mac and iOS apps without opening Xcode

https://scottwillsey.com/building-and-shipping-mac-and-ios-apps-without-ever-opening-xcode/
353•speckx•9h ago•152 comments

Apple's new SpeechAnalyzer API, benchmarked against Whisper and its predecessor

https://get-inscribe.com/blog/apple-speech-api-benchmark.html
488•get-inscribe•12h ago•192 comments

An Englishwoman who sketched India before photography took hold

https://www.bbc.com/news/articles/cm2drrv6q54o
78•1659447091•4h ago•22 comments

Is x86 ready to ACE it?

https://chipsandcheese.com/p/is-x86-ready-to-ace-it
24•mfiguiere•2h ago•0 comments

What will be left for us to work on?

https://www.normaltech.ai/p/what-will-be-left-for-us-to-work
61•randomwalker•2h ago•49 comments

Satellite Tracker – Live Map of Starlink and 30k Satellites

https://satellitemap.space/
22•rolph•2h ago•5 comments

MorphoHDL: A minimalistic language for growing circuits

https://paradigms-of-intelligence.github.io/morpho/
34•jacktang•2h ago•1 comments

Building Food Metadata with LLM Juries

https://careersatdoordash.com/blog/building-food-metadata-with-llm-juries-context-optimization-mu...
18•tie-in•2h ago•2 comments

World-First 'Super Alloy' Could Transform the Way Metals Are Made

https://www.sciencealert.com/world-first-super-alloy-could-transform-the-way-metals-are-made
28•tejohnso•4d ago•16 comments

Turn your singing voice into printable notes (in the browser)

https://om-intelligence.ch/projects/vocal-notation/vocal-notation.html
31•busssard•3h ago•13 comments

Show HN: YouTube Guitar Tab Parser

https://github.com/marcelpanse/youtube-guitar-tab-parser
86•neogenix•7h ago•53 comments

The infinite scroll may become endangered if controversial Calif. law passes

https://www.sfgate.com/politics/article/meta-social-media-teenagers-22337724.php
117•Stratoscope•9h ago•191 comments

The art and engineering of Sega CD Silpheed

https://fabiensanglard.net/silpheed/index.html
236•ibobev•13h ago•50 comments

Show HN: Sx 2.0 – Share AI skills with your team through a Dropbox folder

https://sleuth-io.github.io/sx/2026/07/10/your-dropbox-is-now-a-skill-server.html
24•detkin•4h ago•24 comments

Our Amish Language

https://www.thedial.world/articles/news/amish-pennsylvania-dutch
6•NaOH•1h ago•0 comments

SalesPatriot (YC W25) Is Hiring Full Stack Engineers (SF)

https://jobs.ashbyhq.com/SalesPatriot/df223727-5781-433e-bc75-2aa5bf8dc8d7
1•maciejSz•7h ago

Show HN: Hackney – Compare Uber, Lyft, Waymo, and Robotaxi Prices

https://hackney.app/
37•griffinli•13h ago•28 comments

Linux on the Sega 32X. Who needs hardware synchronization primitives anyway?

https://cakehonolulu.github.io/linux-on-32x/
110•cakehonolulu•9h ago•22 comments

Show HN: RandoFont – A browser for Google Fonts

https://randofont.alesh.com
29•aleshh•4d ago•5 comments

Success may not matter if you aren't doing what you love

https://12gramsofcarbon.com/p/founders-guide-success-may-not-matter
53•theahura•3h ago•17 comments

Show HN: Jacquard, a programming language for AI-written, human-reviewed code

https://github.com/jbwinters/jacquard-lang
63•jbwinters•12h ago•35 comments

A Study of Microsoft's Early 2026 Rollout of Claude Code and GitHub Copilot CLI

https://arxiv.org/abs/2607.01418
42•softwaredoug•6h ago•21 comments

TFTP Honey Pot Results

https://bruceediger.com/posts/tftp-honeypot-results/
66•speckx•8h ago•30 comments

Agents.md – Dumb Human

https://gist.github.com/skorotkiewicz/2d4db4ceaf83aa54eb7f2066fdb961ff
6•modinfo•1h ago•0 comments

Ancient Roman Board Game

https://ludus-coriovalli.web.app/
100•nobody9999•4d ago•40 comments

Show HN: I implemented a neural network in SQL

https://github.com/xqlsystems/xarray-sql/blob/claude/xarray-sql-mnist-demo/benchmarks/nn.py
65•alxmrs•8h ago•14 comments
Open in hackernews

The Scalar Select Anti-Pattern

https://matklad.github.io/2025/05/14/scalar-select-aniti-pattern.html
47•goranmoomin•1y ago

Comments

castratikron•1y ago
As long as processing one event does not affect any of the other events in the batch. E.g. events are file IO, and processing one event causes another event's descriptor to get closed before that event can be processed.
wahern•1y ago
If the close routine on an event source, or the low-level (e.g. epoll) registration, deregistration, and dequeueing logic doesn't know how to keep polling and liveness state consistent between userspace and the kernel, they've got much bigger problems. This looks like Rust code so I would hope the event stream libraries are, e.g., keeping Rc'd file objects and properly managing reference integrity viz-a-viz kernel state before the application caller ever sees the first dequeued event in a cycle. This is a perennial issue with event loop libraries and buggy application code (in every language). One can't just deal with raw file descriptors, call the close syscall directly, etc, hoping to keep state consistent implicitly. There's an unavoidable tie-in needed between application's wrappers around low-level resources and the event loop in use.
taeric•1y ago
I'm not entirely clear on what the proposal is at the end? Seems that the long term answer as to "which of these implications to pursue" is "all of them?" Simply taking in a batch of instructions doesn't immediately change much? You still have to be able to do each of the other things. And you will still expect some dependencies between batches that could possibly interact in the same ways.

In a sense, this is no different than how your processor is dealing with instructions coming in. You will have some instructions that can be run without waiting on previous ones. You will have some that can complete quickly. You will have some that are stalled on other parts of the system. (I'm sure I could keep wording an instruction to match each of the implications.)

To that end, part of your program has to deal with taking off "whats next" and finding how to prepare that to pass to the execution portion of your program. You can make that only take in batches, but you are almost certainly responsible for how you chunk them moreso than whatever process is sending the instructions to you? Even if you are handed clear batches, it is incumbent on you to batch them as they go off to the rest of the system.

lmz•1y ago
I guess the proposal is "instead of fetching and acting on one event at a time, consider fetching all available events and look for opportunities to optimize which ones you process (e.g. by prioritization or by skipping certain events if superseded by newer ones)".
taeric•1y ago
I mean, I got that. But you could as easily say "instead of fetching and acting on one event at a time, fetch and triage/route instructions into applicable queues."

In particular, there is no guarantee that moving to batches changes any of the problems you may have from acting on a single one at a time. To that end, you will have to look into all of the other strategies sooner or later.

Following from that, the problem is not "processMessage" or whatever. The problem is that you haven't broken "processMessage" up into the constituent "receive/triage/process/resolve" loop that you almost certainly will have to end up with.

malkia•1y ago
in CPU's - pipelining!
jchw•1y ago
I believe something similar is going on internally in Windows with event queues. It coalesces and prioritizes input events when multiple of them pile up before you're able to pop new events off of the queue. (For some events, e.g. pointer events, you can even go and query frames that were coalesced during input handling.) On the application/API end, it just looks like a "scalar select" loop, but actually it is doing batching behavior for input events!

(On the flip side, if you have a Wayland client that falls behind on processing its event queue, it can crash. On the whole this isn't really that bad but if you have something sending a shit load of events it can cause very bad behavior. This has made me wonder if it's possible, with UNIX domain sockets, to implement some kind of event coalescing on the server-side, to avoid flooding the client with high-precision pointer movement events while it's falling behind. Maybe start coalescing when FIONREAD gets to some high watermark? No idea...)