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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•7mo 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!

How to stream video from robots for monitoring and teleoperation

https://transitiverobotics.com/blog/streaming-video-from-robots/
1•chfritz•44s ago•0 comments

Amelie 0.8.0 released – introducing dedicated databases and more

https://github.com/amelielabs/amelie/releases/tag/0.8.0
1•pmwkaa•1m ago•0 comments

EU ban on combustion engine cars off table, EPP's Weber says

https://www.reuters.com/sustainability/boards-policy-regulation/plans-combustion-engine-car-ban-e...
1•kleiba•1m ago•0 comments

Async DNS

https://flak.tedunangst.com/post/async-dns
1•todsacerdoti•2m ago•0 comments

Data Center End of Life – Atlassian

https://www.atlassian.com/licensing/data-center-end-of-life
1•andrewSC•3m ago•0 comments

Show HN: Dbxlite – Query 100M+ rows in a browser tab, no install

https://sql.dbxlite.com/?share=gist:f0377982ccd68ac7f61a7faef8ff513e&run=true
1•hfmsio•4m ago•0 comments

Finding Alignment by Visualizing Music in Rust

https://positron.solutions/articles/finding-alignment-by-visualizing-music
1•positron26•5m ago•0 comments

Show HN: A week of progress making a game in Claude Code without any coding

https://play.wrestlejoy.com/static/game/
1•AndyNemmity•6m ago•1 comments

HarisLab: Free online tools for developers and students – fast, ad-free

https://harislab.tech/
1•Haris18•9m ago•0 comments

Show HN: SlimStorage – Self-hosted back end key/values, events store

https://github.com/kibotu/SlimStorage
1•Cloudgazer3d•10m ago•0 comments

Show HN: A zero-to-hero, spaced-repetition guide to WebGL2 and GLSL

https://github.com/GregStanton/webgl2-glsl-primer
1•HigherMathHelp•11m ago•1 comments

America's Betting Craze Has Spread to Its News Networks

https://www.newyorker.com/news/the-lede/americas-betting-craze-has-spread-to-its-news-networks
6•FinnLobsien•12m ago•1 comments

Photographing Professional Hockey with the Sigma 135mm f/1.4 Art

https://petapixel.com/2025/12/06/photographing-professional-hockey-with-the-sigma-135mm-f-1-4-art/
1•PaulHoule•12m ago•0 comments

Instacart reaches into your pocket and lops a third off your dollars

https://pluralistic.net/2025/12/11/nothing-personal/
3•hn_acker•13m ago•1 comments

Show HN: Caliper – iOS App Size Analyzer

https://github.com/kibotu/caliper
1•Cloudgazer3d•13m ago•0 comments

Make a free picture book service

https://c2story.com
1•jeyzolo•14m ago•1 comments

AI-Mediated Decisions and the Emerging Evidentiary Control Gap

https://zenodo.org/records/17914417
1•businessmate•16m ago•1 comments

Rescale your Hetzner VPS and save money

https://j11g.com/2025/12/12/rescale-your-hetzner-vps-and-save-money/
1•speckx•16m ago•0 comments

Senator endorses discredited book that claims chemical treats autism, cancer

https://www.propublica.org/article/ron-johnson-wisconsin-chlorine-dioxide-pierre-kory-endorsement
7•duxup•18m ago•0 comments

Robotaxis offer a path toward smarter and fairer urban mobility

https://bigthink.com/books/robotaxis-urban-mobility/
1•Brajeshwar•19m ago•1 comments

Researchers uncover clues to mysterious origin of famous Hjortspring boat

https://www.cnn.com/2025/12/11/science/hjortspring-plank-boat-origin
1•Brajeshwar•19m ago•0 comments

The Death of the Scientist

https://www.noemamag.com/the-death-of-the-scientist/
3•Brajeshwar•19m ago•0 comments

The FDA Rarely Forces Manufacturers to Recall Dangerous Medical Devices

https://www.propublica.org/article/fda-defective-device-recalls-gao-report
3•hn_acker•20m ago•1 comments

Secondary school maths showing that AI systems don't think

https://www.raspberrypi.org/blog/secondary-school-maths-showing-that-ai-systems-dont-think/
2•zdw•22m ago•0 comments

Our History – DigiPen

https://www.digipen.edu/about/our-history
1•debo_•23m ago•0 comments

China leads research in 90% of technologies

https://www.nature.com/articles/d41586-025-04048-7
5•SirHumphrey•24m ago•0 comments

One Hundred Thousand Billion Poems

https://www.bevrowe.info/Internet/Queneau/Queneau.html
1•nickwrb•24m ago•0 comments

Show HN: Bookmarker – Save links, organize your knowledge

https://www.bookmarker.cc/
1•kaizenb•25m ago•0 comments

Is Entertainment Discovery Fundamentally Broken?

2•nicola_alessi•27m ago•2 comments

Show HN: Help validate startup ideas with synthetic customer interviews

https://market-echo.vercel.app/
3•emarboeuf•30m ago•1 comments