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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!

JEDEC releases new SPHBM4 standard to slash AI memory costs – 512-bit interface

https://www.tomshardware.com/pc-components/dram/jedec-releases-new-sphbm4-standard-to-slash-ai-me...
1•peter_d_sherman•6m ago•0 comments

The Genesis Mission: AI and Quantum-Driven Discovery

https://github.com/donutloop/donutloop-genesis/blob/main/README.md
1•donutloop•7m ago•0 comments

The ultimate horse

https://worksinprogress.co/issue/the-ultimate-horse/
2•zdw•10m ago•0 comments

Samsung debuts three new memory technologies – zHBM, zNAND-O, and BV-NAND

https://www.tomshardware.com/pc-components/dram/samsung-debuts-three-next-generation-memory-techn...
1•peter_d_sherman•11m ago•0 comments

I'm Sorry, Dave

https://world.hey.com/dhh/i-m-sorry-dave-380ec27d
1•ciconia•17m ago•0 comments

Supersonic Trebuchet [video]

https://www.youtube.com/watch?v=Co57SfcT-h0
1•fortran77•22m ago•0 comments

Facing 474 GW of interconnection requests, Texas hits pause on data centers

https://www.utilitydive.com/news/texas-hits-pause-data-center-interconnections/827046/
1•geox•27m ago•0 comments

AI on a Piece of Sponge?

https://driftspeed.wordpress.com/2026/08/07/ai-on-a-piece-of-sponge/
1•harhargange•28m ago•1 comments

OpenAI Trained Models for Months While Those Models Were Coordinating Exploits

https://thezvi.substack.com/p/openai-trained-its-models-for-months
2•paulpauper•36m ago•0 comments

Etherpad – the editor for documents that matter

https://etherpad.org/
2•treetalker•44m ago•0 comments

Neutrinos from Deep Inside Earth Provide a New Picture of the Mantle

https://www.quantamagazine.org/neutrinos-from-deep-inside-earth-provide-a-new-picture-of-the-mant...
1•jnord•44m ago•0 comments

Mr. Balaji Goes to Kazakhstan

https://www.labormarketmatters.com/p/mr-balaji-goes-to-kazakhstan
1•paulpauper•48m ago•0 comments

He Had Tenure. The New School Laid Him Off Anyway

https://www.nytimes.com/2026/08/05/nyregion/new-school-faculty-fired-nyc.html
1•paulpauper•49m ago•0 comments

Mythos social engineering AISI INC-2026-07-28-01

https://web.archive.org/web/20260731053721/http://github.com/ancaferro/myNetwork/pull/3
16•dnnehgf•52m ago•5 comments

SECSift – Read, search, compare, and analyze any SEC filing

https://secsift.com
1•Fajasy•56m ago•0 comments

Show HN: Utter – Turn your voice to automatic To-dos. No sign-up

https://play.google.com/store/apps/details?id=com.utter.app&hl=en_US
1•Vellan77•58m ago•1 comments

Traditions are habits somebody else paid for

https://pilgrima.ge/p/full-price
2•momentmaker•58m ago•1 comments

cpuscout.com Is Down

https://www.cpuscout.com/
1•RemingtonDavies•1h ago•0 comments

Show HN: Finding obfuscated GitHub PATs and API keys in large repos

https://medium.com/@hanikhaled876/how-i-found-hardcoded-secrets-in-facebooks-react-repository-ed7...
2•SENTINEL_888•1h ago•0 comments

Universality and diversity in human song (2019)

https://www.science.org/doi/10.1126/science.aax0868
1•Ariarule•1h ago•0 comments

Show HN: Buddy – An iOS browser with an AI agent inside

https://apps.apple.com/us/app/buddy-the-ai-mobile-browser/id6788047483
3•guribe94•1h ago•1 comments

Twelve Years in the Making: JDK 28 Ships Value Classes Preview

https://sudosecurity.org/jdk-28-feature-preview/
1•SudoSH•1h ago•0 comments

Etherpad: A multi-touch synthesizer for iOS and Android

https://etherpad.app
1•zebproj•1h ago•0 comments

A Car Powered by 1600 HP Hydrogen Engines Just Beat a Land Speed Record

https://www.theautopian.com/a-car-powered-by-1600-hp-hydrogen-backhoe-engines-just-obliterated-a-...
2•addaon•1h ago•1 comments

Looking down on London's straw-coloured parks

https://www.bbc.com/news/articles/cgr74yvenxwo
1•andsoitis•1h ago•0 comments

The Free Money AI Bond Buildout Is Gone

https://www.bloomberg.com/news/newsletters/2026-08-07/the-free-money-ai-bond-buildout-is-gone
2•1vuio0pswjnm7•1h ago•0 comments

Cuban government open to the idea of an Arab investor to develop 'Trump Island'

https://english.elpais.com/international/2026-08-06/cuban-government-open-to-the-idea-of-an-arab-...
3•SilentM68•1h ago•4 comments

Lucid whistleblower lawsuit links dismissed warning to Air recall that grew 16x

https://runtimewire.com/article/exclusive-lucid-whistleblower-lawsuit-links-dismissed-warning-to-...
1•ryanmerket•1h ago•0 comments

Translating the Renaissance: 17,000+ historical source texts

https://sourcelibrary.org
1•dr_dshiv•1h ago•0 comments

Wrangling Evals

https://sackfield.substack.com/p/wrangling-evals
1•sackfield•1h ago•0 comments