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Show HN: Reaktiv – I built Excel-like reactive programming for Python

https://bui.app/when-frontend-reactivity-meets-backend-python-the-story-of-my-first-1-000-download-library/
2•buibuibui•1y ago
Hi HN! I created Reaktiv, a Python library bringing reactive programming to the backend world that recently hit 1,000+ monthly downloads.

I'm actively promoting it because I believe signal-based reactivity (a concept that spread rapidly in frontend development) has huge untapped potential in Python. My breakthrough came when I stopped describing it as "Angular signals for Python" and started calling it "Excel-like computation graphs" - suddenly Python developers understood the value.

The library automatically tracks dependencies between computations, only recalculating values when dependencies change. This eliminates manual dependency tracking, prevents synchronization bugs, and reduces cognitive load when managing complex state.

Interestingly, I've noticed some initial interest from data scientists, though I'm still exploring what specific problems it might solve for them. I also believe the Home Assistant/IoT communities could benefit greatly from this approach.

Would love your thoughts on bringing frontend patterns to backend development!

The Verse Programming Language

https://verselang.github.io/
1•elephantum•12s ago•0 comments

Upload Your RAM

https://uploadyourram.org
1•susanthenerd•1m ago•0 comments

OMLX: Use a second Mac to speed up local LLM prefill 2.9x

https://github.com/jundot/omlx/releases/tag/v0.7.4.dev1
1•joshcsimmons•1m ago•0 comments

London Beer Flood

https://en.wikipedia.org/wiki/London_Beer_Flood
1•RobotToaster•3m ago•0 comments

Activists breach Microsoft data centre construction site; protests spread in EU

https://www.reuters.com/world/europe/activists-breach-microsoft-data-centre-construction-site-pro...
2•vrganj•9m ago•0 comments

What is vibe coding? Definition, meaning and how it works

https://vibecoderjournal.com/what-is-vibe-coding/
1•ahgamerz215•9m ago•0 comments

Ex-Tesla Autopilot head calls vision-only a 'weird religious stance'

https://electrek.co/2026/10/29/ex-tesla-autopilot-head-vision-only-weird-religious-stance/
2•FabHK•16m ago•0 comments

The brain's language network is more extensive than previously thought

https://news.mit.edu/2026/brain-language-network-more-extensive-than-previously-thought-0701
1•bryanrasmussen•19m ago•0 comments

Every Mac comes with an (undocumented) family member classifier

https://8rank.ai/game/apple-intelligence-personal-knowledge-graph
2•infwhispers•30m ago•0 comments

Vale: Bring code-like linting to prose

https://vale.sh
1•Garbage•32m ago•0 comments

Running a law firm on Free software

https://decoded.legal/blog/2026/11/running-a-law-firm-on-free-software-2026-edition/
3•DeepLogin•37m ago•0 comments

Port 0: The Port That Does Not Exist

https://acid.vegas/blog/the-port-that-does-not-exist/
2•NewCzech•38m ago•0 comments

The Unix Philosophy – F/OSS Comics

https://fosscomics.com/posts/9.%20The%20Unix%20Philosophy/
1•vismit2000•38m ago•0 comments

Need for Speed Underground 2 online in the browser

https://nfsu2.xyz/
2•fluxusars•40m ago•0 comments

Project Reclaimer: One Engine for Every Bungie Halo

https://projectreclaimer.dev
1•herunan•44m ago•0 comments

Number of Tries Using Coding Agents May Say More About Standards Than Competence

https://codemanship.wordpress.com/2026/11/07/how-many-tries-we-need-using-coding-agents-may-say-m...
1•mpweiher•44m ago•0 comments

IP address portability between 2 ISPs (2025)

https://www.fdn.fr/portabilite-adresse-ip-aquilenet-fdn/
1•selfhoster1312•46m ago•1 comments

Data centers backlash fueled historic blue wave

https://www.cnn.com/2026/11/07/politics/democrats-midterms-data-centers-ken-paxton-james-talarico
3•flowerlad•47m ago•0 comments

DocuAPI

https://www.docuapi.dev/
1•asteriskeng•48m ago•1 comments

Show HN: I taught my Fujifilm X-T30 II to print on an instax Link 3 over BLE

https://ronangaillard.github.io/posts/fujifilm-x-t30-ii-instax-link-3/
3•j_leboulanger•49m ago•0 comments

Show HN: FastVM – MicroVMs that sleep on idle and wake when packets arrive

https://github.com/tuananh/fastvm
2•tuananh•50m ago•0 comments

How close are Ubuntu 26.04's Rust coreutils to GNU? I diffed 27 utilities

https://github.com/karolkulesza/port-anything/tree/main/showcases/ubuntu-uutils
2•karol-kulesza•1h ago•0 comments

Beyond Transformers: Can LLMs redesign themselves as they train?

https://www.doubleai.com/research/can-llms-redesign-themselves-as-they-train
2•laginimaineb•1h ago•0 comments

Nondeterminism in Futhark

https://futhark-lang.org/blog/2026-11-04-nondeterminism.html
3•birdculture•1h ago•0 comments

Doctor Yellow

https://en.wikipedia.org/wiki/Doctor_Yellow
3•tosh•1h ago•0 comments

Show HN: Mdt

https://github.com/VaibhavAcharya/mdt
2•vaibhavacharya•1h ago•0 comments

Show HN: I built a food recall tracker with ML classification and email alerts

https://brentbutkow.me/projects/recall-radar
3•brenttb•1h ago•0 comments

The hardware bet is wrong. It is running from a war

https://twitter.com/withYougori/status/2118840199400587576
2•Yougori•1h ago•0 comments

Vibrating Mattress Helps Clear Alzheimer's Protein from the Brain

https://www.nature.com/articles/s41467-026-78894-y
2•tapper•1h ago•2 comments

Show HN: Service for the parallel execution of AI agent tasks on remote devices

https://rungrid.space
2•deahesi•1h ago•0 comments