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Your ePub Is Fine. Kobo Disagrees. Blame Adobe

https://andreklein.net/your-epub-is-fine-kobo-disagrees-blame-adobe/
127•sohkamyung•2h ago•40 comments

Write for One Person

https://wizardzines.com/comics/write-for-one-person/
43•evakhoury•2d ago•11 comments

Show HN: Kage – Shadow any website to a single binary for offline viewing

https://github.com/tamnd/kage
390•tamnd•7h ago•90 comments

Rio de Janeiro's "homegrown" LLM appears to be a merge of an existing model

https://github.com/nex-agi/Nex-N2/issues/4
272•unrvl22•9h ago•147 comments

Firewood Splitting Simulator

https://screen.toys/firewood/
621•memalign•4d ago•206 comments

The rich aren't your role models

https://theslowburningfuse.wordpress.com/2026/06/14/the-rich-arent-your-role-models-theyre-your-o...
5•Refreeze5224•18m ago•0 comments

Chopped, Stored, Secured – The Story of the Hash Function

https://0xkrt26.github.io/math_behind_security/2026/06/09/the-story-of-the-hash-function.html
19•denismenace•4d ago•3 comments

Chaosnet (1981)

https://tumbleweed.nu/r/lm-3/uv/amber.html
61•RGBCube•5h ago•7 comments

Show HN: Trace – Offline Mac meeting transcripts you can flag mid-call

https://traceapp.info
88•AG342•1d ago•34 comments

TorchCodec 0.14: HDR Video Decoding for CPU and CUDA, and Fast Wav Decoder

https://github.com/meta-pytorch/torchcodec/releases/tag/v0.14.0
19•scott_s•4d ago•2 comments

Ask HN: What are you working on? (June 2026)

152•david927•9h ago•554 comments

Segmented type appreciation corner (2018)

https://aresluna.org/segmented-type/
59•unexpectedVCR•3d ago•14 comments

AI is code – and can't be prompted into being smarter

https://www.theregister.com/ai-and-ml/2026/06/14/ai-is-code-and-cant-be-prompted-into-being-smart...
57•wglb•4h ago•35 comments

Formal methods and the future of programming

https://blog.janestreet.com/formal-methods-at-jane-street-index/?from_theconsensus=1
187•eatonphil•12h ago•68 comments

Caddy compatibility for zeroserve: 3x throughput and 70% lower latency

https://su3.io/posts/zeroserve-caddy-compat
153•losfair•11h ago•45 comments

Perlisisms (1982)

https://www.cs.yale.edu/homes/perlis-alan/quotes.html
92•tosh•10h ago•42 comments

The only scalable delete in Postgres is DROP TABLE

https://planetscale.com/blog/the-only-scalable-delete
127•hollylawly•3d ago•47 comments

Show HN: Discover Wikipedia articles popular on Hacker News

https://www.orangecrumbs.com/
51•octopus143•7h ago•11 comments

FarOutCompany

https://faroutcompany.com/
100•bookofjoe•11h ago•16 comments

I indexed 669 GB of my GoPro videos using my M1 Max computer and local ML models

275•iliashad•9h ago•64 comments

Lisp's Influence on Ruby

https://blog.tacoda.dev/lisps-influence-on-ruby-6a54f1a7740e
217•tacoda•3d ago•57 comments

Bitsy

https://bitsy.org/
8•tosh•3d ago•1 comments

The Birth and Death of JavaScript (2014)

https://www.destroyallsoftware.com/talks/the-birth-and-death-of-javascript
212•subset•12h ago•122 comments

USB Power Delivery: Plugging into the Benefits

https://www.aptiv.com/en/insights/article/usb-power-delivery-plugging-into-the-benefits
33•mooreds•3d ago•70 comments

How to earn a billion dollars

https://paulgraham.com/earn.html
438•kingstoned•13h ago•1342 comments

Not everyone is using AI for everything

https://gabrielweinberg.com/p/people-are-consuming-ai-like-they
418•yegg•10h ago•451 comments

Linux 7.1

https://lore.kernel.org/lkml/CAHk-=wi4BF4bMhZNZ1tqs+FFV4OuZRe3ZqdWB+LxRLmRweUzQw@mail.gmail.com/T/#u
227•berlianta•9h ago•83 comments

Stanford grads walk out on Google CEO Sundar Pichai speech

https://twitter.com/maattttbrown/status/2066215255987163246
92•sosomoxie•2h ago•43 comments

Abu Fanous

https://en.wikipedia.org/wiki/Abu_Fanous
60•joebig•4h ago•10 comments

The first game engine for robotics

https://luckyrobots.com/
30•arnejenssen•2d ago•19 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...)