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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!

Optogenetics wins the Nobel – breakthrough helping map and control the brain

https://theconversation.com/optogenetics-wins-the-nobel-one-neuroscience-breakthrough-in-a-line-o...
1•bryanrasmussen•2m ago•1 comments

Ex-Anthropic's Jacob Coxon says he's 90% certain PRC has spies in US AI giants

https://finance.yahoo.com/technology/ai/articles/ex-anthropic-researcher-jacob-coxon-220000427.html
1•nephihaha•2m ago•1 comments

We're still figuring out the side effects of GLP-1 weight-loss drugs

https://www.technologyreview.com/2026/10/09/1146094/were-still-figuring-out-the-side-effects-of-g...
2•joozio•9m ago•0 comments

Lots and Lots of Control Panels

https://kottke.org/26/10/lots-and-lots-and-lots-of-control-panels
1•msalsas•10m ago•0 comments

Megakernels on Mac: What Fusion Saves and What It Costs

https://abhishek.it/blog/how-megakernels-work-and-how-to-build-kernels-for-mac
1•frostbyte7•14m ago•0 comments

Show HN: Small web app to memorize Korean words

https://game.tolearnkorean.com/
1•bryanhogan•22m ago•0 comments

Movie Review: Levels (2024)

https://www.nerdly.co.uk/2024/11/15/levels-review/
1•walterbell•22m ago•0 comments

RF BrainScan getting out at UN now?

2•Dabbling_Dion•24m ago•1 comments

Makaton

https://en.wikipedia.org/wiki/Makaton
1•nomilk•24m ago•0 comments

MD5 Research Challenge

https://solveathome.org/projects/md5
1•jonbaer•29m ago•0 comments

Replaced

https://ghuntley.com/replaced/
2•kaeruct•32m ago•0 comments

Opus Core 1.2 is now available

1•pragidi•33m ago•0 comments

Lovable Style Builder via CF Inference GLM-5.3, Kimi K2.7 Code and GLM-5.3 Flash

https://mainbrella.com/blog/lovable-style-builder-cloudflare-inference/
2•cs1996•33m ago•1 comments

Show HN: Bob

https://bob.spif.fyi/
1•androsynth89•35m ago•1 comments

SQLite 3.54.0 Released

https://sqlite.org/releaselog/3_54_0.html
4•thunderbong•37m ago•0 comments

AI's leaders (probably) aren't faking their fear

https://www.vox.com/politics/505834/ai-doom-anthropic-openai-pr
3•simianwords•38m ago•0 comments

Orkut: You deserve better from social media

https://orkut.com/en/
1•yarapavan•46m ago•1 comments

From WordPress to Astro: Zero Maintenance, Maximum Control

https://www.mikeroberto.com/wordpress-astro-migration
1•larrysalibra•50m ago•0 comments

Neuroscience Can Make Decluttering Easier

https://www.nytimes.com/2026/10/11/opinion/clutter-spring-cleaning-psychology.html
2•gumby•50m ago•1 comments

TasteRoute: Personalized Routing for Video Generation

https://zrt.wtf/publication/2026-10-10-taste-route
1•blackcat201•52m ago•0 comments

Show HN: Infinite – open-source node-based DAW for visuals, music and code

https://github.com/n1m21n/Infinite
1•n1m21n•55m ago•0 comments

LiteReview: A self-hosted plane for configuring PR review agents

https://github.com/BerriAI/litereview
1•mfkhalil•58m ago•0 comments

Distanser – Measure Anything on Screen

https://apps.apple.com/us/app/distanser/id6805159232?mt=12
1•j-sanden•1h ago•1 comments

Luke Nichols' (Outdoor Boys YouTube channel) full commencement speech [video]

https://www.youtube.com/watch?v=ttQd5bEdfL0
1•nomilk•1h ago•0 comments

LineageOS 24.0

https://lineageos.org/Changelog-32/
4•timschumi•1h ago•0 comments

Ask Claude Code for a Svelte table and it writes 1k lines of its own

https://svgrid.com/blog/ai-assistant-writes-its-own-table/
1•boikom•1h ago•0 comments

DARPA Selects Companies for Final Stage C Verification Under QBI

https://quantumcomputingreport.com/darpa-selects-atom-computing-diraq-ibm-and-ionq-for-final-stag...
1•donutloop•1h ago•0 comments

Europol urges early action to protect crypto and data from quantum threats

https://www.europol.europa.eu/media-press/newsroom/news/europol-urges-early-action-to-protect-cry...
2•donutloop•1h ago•0 comments

Data Engineering Is the Cache Invalidation Problem FT. Josh Wills

https://motherduck.com/blog/cache-invalidation-problem-data-engineering-josh-wills/
2•zeristor•1h ago•0 comments

No Doodle

https://chromewebstore.google.com/detail/no-doodle/dkbobaklmnjfomfnchhbfcljaeccnmmk
1•sanepara•1h ago•0 comments