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A Preview of DuckDB v2.0

https://duckdb.org/2026/08/17/duckdb-20-highlights
286•ibotty•3h ago•43 comments

AI-Generated GitHub Copilot “Autofix” Allowed Compromise of Snowflake's Jira

https://www.wiz.io/blog/red-agent-snowflake-copilot-cicd-bug
154•galnagli•3h ago•73 comments

Launch HN: Speko (YC S26) – OpenRouter for Voice AI

https://speko.ai/
48•abdik•2h ago•20 comments

How to disable or avoid intrusive AI

https://www.librarian.net/notoai/
122•ColinWright•3h ago•49 comments

GPT 5.6 Sol is the best "vision" model OpenAI ever released

https://blog.roboflow.com/openai-gpt-5-6/
211•plurby•5h ago•106 comments

Incident with Github.com

https://www.githubstatus.com/incidents/zkxwbgr0cnmx
197•SpyCoder77•4h ago•690 comments

How to put 170 atoms in an atom

https://signoregalilei.com/2026/08/02/how-to-put-170-atoms-in-an-atom/
54•surprisetalk•3h ago•5 comments

Olo (Color)

https://en.wikipedia.org/wiki/Olo_(color)
105•inigyou•5d ago•17 comments

Buy Your Friends Batteries

https://domenkozar.com/2026/08/17/buy-your-friends-batteries/
45•domenkozar•56m ago•40 comments

Ask HN: Alternatives to GitHub

269•dhruv3006•3h ago•166 comments

Show HN: Sokoban AI Solver

https://mkornreich.me/projects/sokoban/
48•enjoyyourlife•4h ago•31 comments

Sun Clock

https://sunclock.net/
5•Gecko4072•1h ago•0 comments

How I developed an Am29000 C compiler and web browser

https://nanochess.org/am29000_c_compiler_web_browser.html
47•nanochess•20h ago•5 comments

Apple's App Tracking Transparency treated its own apps better than rivals

https://www.bundeskartellamt.de/SharedDocs/Meldung/EN/Pressemitteilungen/2026/08_17_2026_Apple_AT...
189•nyku•3h ago•68 comments

Anthropic's ‘watermark’ text adulteration in Claude is a perversion of writing

https://daringfireball.net/2026/08/anthropics_watermark_text_adulteration_in_claude_is_a_perversi...
655•ropbear•19h ago•567 comments

How to ship a database every day

https://turbopuffer.com/blog/control-plane
42•tarunnnp•3h ago•6 comments

Show HN: Saggar, a Mac terminal that keeps sessions and your attention organized

https://saggar.marginalutility.dev/
18•mcclowes•3h ago•9 comments

Show HN: Learn Flags Quiz

https://flagquizzes.com/
25•artiomyak•3h ago•11 comments

On AI regulation and messaging

https://twitter.com/DarioAmodei/status/2088758816376807762
201•jacquesm•15h ago•412 comments

Show HN: Desktopcolors.com – A museum for solid background colors of classic OS

https://desktopcolors.com
105•vlowrian•9h ago•39 comments

Cross-Validation From Scratch and a Surprise at n=100

https://www.kenkoonwong.com/blog/crossvalidation/
4•sebg•3d ago•0 comments

Mexico crackdown on coastal development

https://yucatanmagazine.com/mexico-crackdown-on-coastal-development/
85•untiledsource•5h ago•21 comments

Anthropic's War on open source AI

https://twitter.com/TheAhmadOsman/status/2065307070044234186
43•bilsbie•2h ago•10 comments

How Go detects struct copies with sync.noCopy

https://func25.dev/posts/go-sync-nocopy/
55•func25•4d ago•50 comments

Online clinics and influencers are promoting Cialis as a longevity drug

https://www.npr.org/2026/08/17/nx-s1-5928263/cialis-viagra-tadalafil-longevity-heart-health
78•brandonb•4h ago•56 comments

Linear algebra done right

https://linear.axler.net/
202•the-mitr•12h ago•77 comments

Reticulum – Decentralized Mesh Network

https://reticulum.network/
204•sudo_cowsay•17h ago•65 comments

Qwen 3.8 27B is excellent, but it defaults to overthinking things

https://simonwillison.net/2026/Aug/16/qwen-38-27b/
729•bilsbie•17h ago•339 comments

Universal Health Coverage Could Save $1T and 114k Lives a Year, Yale Study

https://ysph.yale.edu/news-article/universal-health-coverage-could-save-one-trillion-dollars-and-...
270•karakoram•1h ago•360 comments

The only known trebuchet casualty in history

https://arstechnica.com/science/2026/08/meet-the-only-known-trebuchet-casualty-in-history/
41•Tomte•3h ago•13 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...)