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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!

News-deframe: Structural comparison of how news outlets frame the same event

https://github.com/422August/news-deframe
1•August0422•2m ago•0 comments

Magic eye tube (The first RF "debugger")

https://en.wikipedia.org/wiki/Magic_eye_tube
1•peter_d_sherman•4m ago•1 comments

Understanding Event-Driven Systems

https://www.thetrueengineer.com/p/understanding-event-driven-systems
1•adletbalzhanov•6m ago•0 comments

Google translate is a better writer than me

https://theoo.dev/notes/google-translate-is-a-better-writer-than-me-29
1•speckx•7m ago•0 comments

I Found Two Shopify Plugin Zero-Days in a Bathtub

https://alec.is/posts/i-found-two-shopify-plugin-zero-days-in-a-bathtub/
1•arm32•7m ago•0 comments

OpenLake: Fast, Durable Storage for LLM Inference and Training

https://www.theopenlake.com/blog/introducing-openlake
2•kunalsin9h•7m ago•0 comments

Who Is Antigone? The 2500-Year-Old Rebel with a Cause

https://www.nytimes.com/2026/03/22/theater/antigone-theater-art-sophocles-adaptations.html
1•bryanrasmussen•7m ago•0 comments

SwarmWorld: Stigmergic technological evolution in societies of LLM agents

https://arxiv.org/abs/2608.26081
1•wintercarver•8m ago•1 comments

Why Everybody Hates Palantir

https://www.economist.com/britain/2026/08/20/why-everybody-hates-palantir
2•bookofjoe•8m ago•1 comments

Xiaomi Magnetic Bluetooth Speaker: iPhone MagSafe Stand and Speaker in One Tiny

https://www.gizmoweek.com/xiaomi-magnetic-bluetooth-speaker/
1•takumi123•9m ago•0 comments

ELPI – Embeddable Lambda Prolog Interpreter

https://github.com/LPCIC/elpi
2•TheWiggles•10m ago•0 comments

Experience Machine

https://www.smbc-comics.com/comic/experience-7
1•loughnane•12m ago•0 comments

RFC draft-meow-mrrp-00

https://www.ietf.org/archive/id/draft-meow-mrrp-00.txt
2•ruined•14m ago•0 comments

BoqCalc, an AI pipeline that prices a 500-line BOQ without hallucinating rates

https://boqcalc.com
1•boqcalc•14m ago•0 comments

Blue-Collar Jobs Are the New Flashpoint in Data-Center Fight

https://www.wsj.com/economy/jobs/blue-collar-jobs-are-the-new-flashpoint-in-data-center-fight-aac...
1•627467•15m ago•0 comments

AI Lattice Proofs with Chris Peikert

https://securitycryptographywhatever.com/2026/08/26/ai-lattice-proofs-with-chris-peikert/
1•henrikhorluck•16m ago•0 comments

When do Markov chains converge?

https://amitharlev.com/blog/mc_convergence/
1•vismit2000•17m ago•0 comments

Cloudflare Workers: Request Collapsing

https://developers.cloudflare.com/workers/cache/
1•tosh•19m ago•0 comments

Right to Repair State Laws Continue to Surge – Enforcement Remains Nonexistent

https://www.techdirt.com/2026/08/28/right-to-repair-state-laws-continue-to-surge-but-enforcement-...
1•speckx•20m ago•0 comments

The Inverse of Ensloppification?

https://getisland.app/blog/inverse-of-ensloppification/
2•ethanpronev•23m ago•0 comments

The Hugging Face attack surprised me

https://www.planned-obsolescence.org/p/the-hugging-face-attack-surprised
2•dnw•23m ago•0 comments

Would you share your weirdest agent logs with AI safety researchers?

https://www.reddit.com/r/AI_Agents/comments/1w1nuzb/whats_your_weirdest_ai_agent_log/
3•matildagh•24m ago•0 comments

Gemini Notebook for Grad School

https://www.augmentedswe.com/p/how-to-use-gemini-notebook
1•wordsaboutcode•25m ago•0 comments

Zero-cost 'tagless initial' in Rust with GADT-style enums

https://inferara.com/blog/rust-tagless-final-gadt/
1•fanf2•26m ago•0 comments

It appears Google cut ARM hardware memory tagging support on Pixel 11 series

https://grapheneos.social/@GrapheneOS/117179231167297908
2•ysnp•26m ago•0 comments

Three mistakes of new AI teams

https://softwaredoug.com/blog/2026/08/29/ai-team-mistakes
2•softwaredoug•27m ago•0 comments

Corca

https://corca.app
2•gone35•27m ago•1 comments

Ex-White House teleprompter operator fined $172,000 for Trump speech bets

https://www.theguardian.com/us-news/2026/aug/29/former-white-house-teleprompter-operator-fined-ka...
2•pseudolus•28m ago•1 comments

Moonlight

https://www.themoonlight.io/en
1•gone35•30m ago•0 comments

ReactOS 0.4.16

https://reactos.org/project-news/reactos-0416-released/
2•Torlan•33m ago•0 comments