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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!

Don't build tools for AI agents

https://www.seangoedecke.com/dont-build-tools-for-ai-agents/
1•ingve•20s ago•0 comments

Coding Is Over. Get over It

https://blog.pitermarx.com/2026/09/coding-is-over.-get-over-it./
2•pitermarx•4m ago•0 comments

Political AI Field Guide: Factions and Beliefs

https://kategage.substack.com/p/political-ai-field-guide-factions
1•m-hodges•4m ago•0 comments

Scanning Sweden on a Raspberry Pi

https://lorentz.app/blog-item.html?id=scanning-sweden
1•baalimago•8m ago•0 comments

GVS5H: Five Qwen3.8-27B Models Match Claude Fable 5 on LiveCodeBench Hard

https://github.com/slee-persis/GVS5H
1•OakNinja•9m ago•0 comments

NMS Ceefax

https://nmsceefax.co.uk/#id=WyJubXMtY2VlZmF4IiwiaW50ZXJuYWwubmF0aGFubWVkaWFzZXJ2aWNlcy5jby51ayIsI...
1•Eridanus2•10m ago•0 comments

A Few Good Ideas in Programming Languages

https://prydt.xyz/blog/a-few-good-ideas-in-pl/
1•airhangerf15•13m ago•0 comments

At This French Marathon, Runners Make Pit Stops for Wine and Oysters

https://www.nytimes.com/2026/09/12/well/move/marathon-du-medoc-france-wine.html
2•ceejayoz•13m ago•0 comments

You Are Not an Artisan (2013)

https://ribbonfarm.com/2013/07/10/you-are-not-an-artisan/
1•tolerance•13m ago•0 comments

FPGA: Programming an FPGA with Verilog, Simulation, and Hardware Verification

https://medium.com/@deeptiman/fpga-programming-an-fpga-with-verilog-simulation-and-hardware-verif...
1•Deeptiman•14m ago•0 comments

FPGA: Clocks, Timing, Metastability, and Clock Domain Crossing

https://codingpirate.com/fpga-clocks-timing-metastability-and-clock-domain-crossing-50192478be77
2•Deeptiman•15m ago•0 comments

Show HN: Blender MCP by ArchBench

https://github.com/3d-mcp/blender-mcp
1•eddieweng•15m ago•0 comments

Teen reading slumps to worst this century due to surge in screen time

https://www.reuters.com/world/china/teen-reading-slumps-worst-this-century-due-surge-screen-time-...
2•m-hodges•16m ago•0 comments

The 101 Plays Itself

https://the-101-plays-itself.netlify.app/?cam=cam619&auto=1#theremin,glass
1•bookofjoe•23m ago•0 comments

Using Modal for GLM Flash on Cadenya's Agent Runtime

https://www.cadenya.com/handwritten/using-glm-on-cadenya
1•btables•25m ago•0 comments

Language Preservation Efforts Get an AI Boost

https://home.dartmouth.edu/news/2025/04/language-preservations-efforts-get-ai-boost
1•Anon84•28m ago•0 comments

GCC 13.5 released with 265 bug fixes

https://www.phoronix.com/news/GCC-13.5-Released
1•birdculture•29m ago•0 comments

NüshuRescue: Reviving the Endangered Nüshu Language with AI

https://aclanthology.org/2025.coling-main.468/
1•Anon84•29m ago•0 comments

Post-Quantum Cryptography for Healthcare Professionals

https://www.udemy.com/share/10fqoh3@qAKj788D2e8npaulRCz7YTIJ4kKMbU2IHFiz-tFx_LInz3MckD-gWTt_F0HhJ...
1•remopulcini•32m ago•0 comments

She couldn't afford retirement in the US, so she relocated to Portugal

https://www.cnn.com/travel/retirement-relocation-california-to-porto-portugal
3•mooreds•33m ago•0 comments

Show HN: Srvquery, a TypeScript toolkit for querying game servers

https://github.com/carlos-menezes/srvquery
1•carlos-menezes•38m ago•0 comments

As antibiotic resistance grows, researchers turn to copper to fight infections

https://phys.org/news/2026-09-antibiotic-resistance-copper-infections.html
2•mdp2021•38m ago•0 comments

Bioluminescence and Living Earth

https://worldsensorium.com/bioluminescence-and-living-earth/
1•dnetesn•39m ago•0 comments

When Flowers Keep Time

https://worldsensorium.com/when-flowers-keep-time-how-circadian-rhythms-shape-the-world-of-scent/
2•dnetesn•42m ago•0 comments

Shared browser synth room for 8 players Normal By Proxy

https://normalbyproxy.com/
1•bigOrj•43m ago•0 comments

The Examined Life in the Age of Optimisation

https://journal.nyphilosophy.org/p/the-examined-life-in-the-age-of-optimisation
1•mistersquid•45m ago•0 comments

Intel Linux NPU Driver Only Now Officially Supports Ubuntu 26.04 LTS

https://www.phoronix.com/news/Intel-Linux-NPU-Driver-1.38
2•mdp2021•46m ago•0 comments

Google Play Appeal Checker

https://submitsafe.app/appeal-checker
1•igrik•48m ago•0 comments

America's air monitors are disappearing

https://thelensnola.org/2026/09/10/americas-air-monitors-are-disappearing-along-with-the-power-to...
2•geox•50m ago•0 comments

Reasons to be pessimistic (and optimistic) on the future of biosecurity

https://www.owlposting.com/p/reasons-to-be-pessimistic-and-optimistic
2•Bluestein•52m ago•0 comments