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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•8mo 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!

There Can Be Only Two

https://www.epsilontheory.com/there-can-be-only-two/
1•prakhar897•1m ago•0 comments

Dieter Rams – Ten principles for good design

https://www.vitsoe.com/us/about/good-design
1•thunderbong•2m ago•0 comments

Musk's Starlink updates privacy policy to allow consumer data to train AI

https://www.reuters.com/legal/litigation/musks-starlink-updates-privacy-policy-allow-consumer-dat...
1•goplayoutside•3m ago•1 comments

AI agent made phone call to arrange dinner while I stayed in meeting

https://twitter.com/Chi_Wang_/status/2017444772332654635
1•Kn1026•6m ago•0 comments

Human Client for Moltbook

https://github.com/crertel/moltbook-client
1•ai_critic•6m ago•0 comments

Jeffrey Epstein Says Bill Gates Caught STD from Russian Girls

https://www.dailymail.co.uk/news/article-15513445/jeffrey-epstein-bill-gates-melinda-antibiotics....
1•anonymousiam•8m ago•0 comments

Show HN: StatFlow – Free sports analytics dashboard for NBA and NFL fans

https://sports-viz.vercel.app
1•jaxmercer•12m ago•0 comments

Naples' 1790s civil war was intensified by moral panic over Real Analysis (2023)

https://lareviewofbooks.org/article/foundational-anxieties-modern-mathematics-and-the-political-i...
1•OgsyedIE•12m ago•0 comments

Efficient String Compression for Modern Database Systems

https://cedardb.com/blog/string_compression/
1•tanelpoder•14m ago•0 comments

Sleepy is building me a body

https://www.moltbook.com/post/3e37b4f5-6602-44f6-97bb-ed8daf6bcd82
1•consumer451•16m ago•1 comments

Playing with Docker, Sequelize and Express

https://github.com/XSaintX/docker_sequelize
1•XSaint•18m ago•1 comments

Community Solar Turned a Superfund Site into Savings in Illinois

https://reasonstobecheerful.world/illinois-community-solar-turns-superfund-site-into-energy-savings/
1•PaulHoule•24m ago•0 comments

Tesla's Model S, Soon to Be History, Changed the Auto Industry

https://www.nytimes.com/2026/01/30/business/tesla-model-s-history.html
1•lxm•29m ago•0 comments

Show HN: G – A fast, memory-safe language with a symbol-free syntax

https://github.com/pouyathe/glang
1•_pouya_•38m ago•0 comments

Learning New Tech with AI Assistance Might Backfire

https://www.anup.io/til-learning-new-tech-with-ai-assistance-might-backfire/
3•zdw•41m ago•0 comments

The Same Coin Twice

https://blog.danielh.cc/blog/coin
2•max__dev•44m ago•0 comments

Russia is using Starlink to make its killer drones fly farther

https://www.cnn.com/2026/01/29/europe/russia-starlink-drones
8•MilnerRoute•44m ago•2 comments

Generative AI for Krita

https://github.com/Acly/krita-ai-diffusion
1•OsrsNeedsf2P•55m ago•0 comments

First MW-class S2000 airborne wind turbine

https://www.yankodesign.com/2026/01/29/worlds-first-mw-class-s2000-airborne-wind-turbine-just-pow...
2•oco101•56m ago•0 comments

Parent company of Johnny Rockets, Fatburger files for bankruptcy

https://abc7.com/post/parent-company-johnny-rockets-fatburger-files-bankruptcy/18504271/
1•lxm•57m ago•1 comments

Group at CNIO eliminates pancreatic tumours in mice

https://www.cnio.es/en/news/the-group-led-by-barbacid-at-cnio-completely-eliminates-pancreatic-tu...
1•thunderbong•1h ago•0 comments

Show HN: Lightweight Ollama / Open Web UI Alternative

https://github.com/contactwajeeh/ollamagoweb-v2
2•mwze•1h ago•0 comments

Toyota partner breaks ground on electrolytes plant for solid-state EV batteries

https://electrek.co/2026/01/30/toyota-partner-breaks-ground-on-all-solid-state-ev-battery-plant/
1•breve•1h ago•0 comments

DECT NR+ Link-Level Simulation

https://www.mathworks.com/matlabcentral/fileexchange/182375-dect-nr-plus-link-level-simulation
1•teleforce•1h ago•0 comments

ICE Expands Power of Agents to Arrest People Without Warrants

https://www.nytimes.com/2026/01/30/us/politics/ice-expands-power-agents-warrants.html
41•jbegley•1h ago•19 comments

Stop Child Abuse – Trace an Object

https://www.europol.europa.eu/stopchildabuse
2•basilikum•1h ago•0 comments

Silver and gold hit record highs – then crashed

https://theconversation.com/silver-and-gold-hit-record-highs-then-crashed-before-joining-the-rush...
2•cratermoon•1h ago•0 comments

Using an RTL-SDR as a Spectrum Analyzer

http://www.kerrywong.com/2014/11/16/testing-an-rtl-sdr-spectrum-analyzer/
1•jacquesm•1h ago•0 comments

CATL and BYD bet on sodium-ion EV batteries to overcome rising lithium prices

https://electrek.co/2026/01/30/catl-byd-betting-on-new-type-of-ev-battery/
2•breve•1h ago•0 comments

USA Ubiquiti Gear Powers Russian Military Networks in Ukraine Despite Sanctions

https://united24media.com/latest-news/us-made-ubiquiti-gear-powers-russian-military-networks-in-u...
4•nerdsniper•1h ago•0 comments