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Show HN: 289x speedup over MLP using Spectral Graphs

https://zenodo.org/login/?next=%2Fme%2Fuploads%3Fq%3D%26f%3Dshared_with_me%25253Afalse%26l%3Dlist...
1•andrespi•30s ago•0 comments

Teaching Mathematics

https://www.karlin.mff.cuni.cz/~spurny/doc/articles/arnold.htm
1•samuel246•3m ago•0 comments

3D Printed Microfluidic Multiplexing [video]

https://www.youtube.com/watch?v=VZ2ZcOzLnGg
1•downboots•3m ago•0 comments

Abstractions Are in the Eye of the Beholder

https://software.rajivprab.com/2019/08/29/abstractions-are-in-the-eye-of-the-beholder/
1•whack•3m ago•0 comments

Show HN: Routed Attention – 75-99% savings by routing between O(N) and O(N²)

https://zenodo.org/records/18518956
1•MikeBee•3m ago•0 comments

We didn't ask for this internet – Ezra Klein show [video]

https://www.youtube.com/shorts/ve02F0gyfjY
1•softwaredoug•4m ago•0 comments

The AI Talent War Is for Plumbers and Electricians

https://www.wired.com/story/why-there-arent-enough-electricians-and-plumbers-to-build-ai-data-cen...
1•geox•7m ago•0 comments

Show HN: MimiClaw, OpenClaw(Clawdbot)on $5 Chips

https://github.com/memovai/mimiclaw
1•ssslvky1•7m ago•0 comments

I Maintain My Blog in the Age of Agents

https://www.jerpint.io/blog/2026-02-07-how-i-maintain-my-blog-in-the-age-of-agents/
2•jerpint•7m ago•0 comments

The Fall of the Nerds

https://www.noahpinion.blog/p/the-fall-of-the-nerds
1•otoolep•9m ago•0 comments

I'm 15 and built a free tool for reading Greek/Latin texts. Would love feedback

https://the-lexicon-project.netlify.app/
1•breadwithjam•12m ago•1 comments

How close is AI to taking my job?

https://epoch.ai/gradient-updates/how-close-is-ai-to-taking-my-job
1•cjbarber•12m ago•0 comments

You are the reason I am not reviewing this PR

https://github.com/NixOS/nixpkgs/pull/479442
2•midzer•14m ago•1 comments

Show HN: FamilyMemories.video – Turn static old photos into 5s AI videos

https://familymemories.video
1•tareq_•16m ago•0 comments

How Meta Made Linux a Planet-Scale Load Balancer

https://softwarefrontier.substack.com/p/how-meta-turned-the-linux-kernel
1•CortexFlow•16m ago•0 comments

A Turing Test for AI Coding

https://t-cadet.github.io/programming-wisdom/#2026-02-06-a-turing-test-for-ai-coding
2•phi-system•16m ago•0 comments

How to Identify and Eliminate Unused AWS Resources

https://medium.com/@vkelk/how-to-identify-and-eliminate-unused-aws-resources-b0e2040b4de8
2•vkelk•17m ago•0 comments

A2CDVI – HDMI output from from the Apple IIc's digital video output connector

https://github.com/MrTechGadget/A2C_DVI_SMD
2•mmoogle•17m ago•0 comments

CLI for Common Playwright Actions

https://github.com/microsoft/playwright-cli
3•saikatsg•18m ago•0 comments

Would you use an e-commerce platform that shares transaction fees with users?

https://moondala.one/
1•HamoodBahzar•20m ago•1 comments

Show HN: SafeClaw – a way to manage multiple Claude Code instances in containers

https://github.com/ykdojo/safeclaw
2•ykdojo•23m ago•0 comments

The Future of the Global Open-Source AI Ecosystem: From DeepSeek to AI+

https://huggingface.co/blog/huggingface/one-year-since-the-deepseek-moment-blog-3
3•gmays•24m ago•0 comments

The Evolution of the Interface

https://www.asktog.com/columns/038MacUITrends.html
2•dhruv3006•25m ago•1 comments

Azure: Virtual network routing appliance overview

https://learn.microsoft.com/en-us/azure/virtual-network/virtual-network-routing-appliance-overview
2•mariuz•25m ago•0 comments

Seedance2 – multi-shot AI video generation

https://www.genstory.app/story-template/seedance2-ai-story-generator
2•RyanMu•29m ago•1 comments

Πfs – The Data-Free Filesystem

https://github.com/philipl/pifs
2•ravenical•32m ago•0 comments

Go-busybox: A sandboxable port of busybox for AI agents

https://github.com/rcarmo/go-busybox
3•rcarmo•33m ago•0 comments

Quantization-Aware Distillation for NVFP4 Inference Accuracy Recovery [pdf]

https://research.nvidia.com/labs/nemotron/files/NVFP4-QAD-Report.pdf
2•gmays•34m ago•0 comments

xAI Merger Poses Bigger Threat to OpenAI, Anthropic

https://www.bloomberg.com/news/newsletters/2026-02-03/musk-s-xai-merger-poses-bigger-threat-to-op...
2•andsoitis•34m ago•0 comments

Atlas Airborne (Boston Dynamics and RAI Institute) [video]

https://www.youtube.com/watch?v=UNorxwlZlFk
2•lysace•35m ago•0 comments
Open in hackernews

An MVCC-like columnar table on S3 with constant-time deletes

https://www.shayon.dev/post/2025/277/an-mvcc-like-columnar-table-on-s3-with-constant-time-deletes/
45•shayonj•4mo ago

Comments

simlevesque•4mo ago
I just want to be able to append metadata to a Parquet file at the end without rewriting the whole file. Tombstones could be baked in the parquet file this way.

It does work with "one more file" but it's not good for performance.

shayonj•4mo ago
Yeah. Or just sub out the data with null bytes. Something like that could be nice too.
simlevesque•3mo ago
Are you familiar with Parquet ? you can't do that at all, you need to rewrite the whole file.
shayonj•3mo ago
Yeah , I poorly phrased it - I meant in an ideal situation with the benefits of parquet like columnar file structure. I very much understand that it’s not possible on parquet today for the reasons you mentioned and others.
cpard•3mo ago
That’s the whole reason of existence of Iceberg, Delta and Hudi right?

Not as easy as just appending metadata to a parquet file but in the other hand, parquet was never and probably shouldn’t be designed with that functionality in mind.

simonw•4mo ago
This is a really clever design.

The cost estimates are particularly notable: if they're right that's a cost of about $3/day for 6TB/day of written data, 2TB/day of deletes and 50K read queries.

Storing all those TBs of data in S3 is where the real cost lies. I think it costs $5520 to store 8TB*30 = 240TB in S3, and if you retain all data your monthly cost goes up by $5520 every month.

xyzzy_plugh•3mo ago
I think the idea is that the deletes would eventually be compacted, so it's ultimately half as much, but I digress.

The cost isn't that bad all things considered. Hot, durable and available data ain't that cheap, especially in the cloud. Self-hosting is within an order of magnitude.

shayonj•3mo ago
I think ideally you could map retention of cold data to file objects itself and using key space naming strategy and lifecycle rules, expire the data that is not needed, thus saving on the storage costs (as much as possible hopefully)
shayonj•3mo ago
Here is another take on deletes through by just updating the row groups in Parquet file through multi part upload and UploadPartCopy - https://www.shayon.dev/post/2025/285/mutable-atomic-deletes-...