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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!

Kadb: Kotlin library to connect Android devices directly without ADB binary file

https://github.com/flyfishxu/Kadb
1•sea-gold•28s ago•0 comments

9965 GNU – An asteroid named for the free-software GNU Project

https://en.wikipedia.org/wiki/9965_GNU
1•ColinWright•52s ago•0 comments

Annie Ernaux still feels like an outsider

https://www.vulture.com/article/annie-ernaux-interview-french-protests-nobel-prize.html
1•Caiero•1m ago•0 comments

Show HN: First Silicon, real chip bugs that AI models miss

https://umwelt.vision/first-silicon/
1•Arno_Bighub•2m ago•0 comments

Why does shuffling the schedule find so many bugs?

https://fzakaria.com/2026/11/03/why-does-shuffling-the-schedule-find-so-many-bugs
1•speckx•3m ago•0 comments

We Need More Than the Ballot to Defeat Authoritarianism

https://transform-network.net/blog/analysis/we-need-more-than-the-ballot-to-defeat-authoritarianism/
2•robtherobber•4m ago•0 comments

We are seeking feedback for our school project

1•dandinh•5m ago•0 comments

Cognitive Sovereignty and the Computable Enterprise

https://www.foldingspace.ai/p/cognitive-sovereignty-and-the-computable
2•hdevarajan•6m ago•1 comments

Show HN: A decent text-to-image model trained for ~$20K (Apache 2.0 Weights)

https://www.linum.ai/field-notes/pjit-21k
2•schopra909•7m ago•0 comments

Show HN: Continuum Verifier – offline checks for AI data-provenance records

https://github.com/Dr-PampersMuffin/continuum-verifier
1•PampersMuffin•7m ago•0 comments

Show HN: Hole Punch for iOS: Sling your spaceship around gravitational fields

https://apps.apple.com/gb/app/hole-punch/id6819102242
1•trwhite•8m ago•0 comments

Number Parsing at a Gigabyte per Second

https://arxiv.org/abs/2101.11408
1•ibobev•9m ago•0 comments

Revisiting Importance Sampling

https://lisyarus.github.io/blog/posts/revisiting-importance-sampling.html
1•ibobev•10m ago•0 comments

What is your biggest concern when building an MCP server?

4•guardiansamurai•10m ago•0 comments

macOS 27.3 Makes Markdown Files Easier to Read

https://www.macrumors.com/2026/11/04/macos-27-3-makes-markdown-files-easier-to-read/
2•tosh•11m ago•0 comments

Policy Analysis Market

https://en.wikipedia.org/wiki/Policy_Analysis_Market
1•enjoyyourlife•12m ago•0 comments

Jira vs. Linear for Agents

https://www.radial.build/blog/jira-vs-linear-for-agents
1•acossta•13m ago•0 comments

Postman Caught Installing AI Plugins Without Developer Consent

https://dev.ua/en/news/postman-1793785667
1•LopRabbit•14m ago•1 comments

LLMs replayed 50 years of EPA glyphosate decisions. None was more lenient

https://reckoningscience.org/regulation-by-ai-replaying-epas-glyphosate-decisions/
1•kaurov•16m ago•0 comments

The Agentic Software Factory Is the Wrong Metaphor

https://robwest.info/articles/the-agentic-software-factory-is-the-wrong-metaphor/
1•emersonmacro•16m ago•0 comments

Ask HN: Fable 5.1 or Opus 5.5?

1•apt-apt-apt-apt•17m ago•0 comments

Show HN: ScreenGuard – Open-source digital wellbeing and app limits for Linux

https://github.com/adityakrishnan005-a11y/ScreenGuard
1•AdityaK_9999•18m ago•0 comments

JSONBench – A Benchmark for Data Analytics on JSON

https://benchmark.clickhouse.com/json/
1•zX41ZdbW•19m ago•0 comments

Show HN: Audio Visuals for the Quiet Mind

https://harmonicautomata.bytejelly.com/
1•jasondigitized•20m ago•0 comments

Back to Basics (2001)

https://www.joelonsoftware.com/2001/12/11/back-to-basics/
1•theanonymousone•20m ago•0 comments

Scientists identify two overlooked skills that predict reading success

https://www.mdpi.com/2079-3200/13/8/104
1•sshah03•20m ago•1 comments

Whose Service Is It Anyway? Predicting Service Ownership at Cortex

https://builders.cortex.io/blog/whose-service-is-it-anyway/
5•keithfz•22m ago•0 comments

The G.I. and the Paperback: A World War II Love Story

https://warontherocks.com/the-g-i-and-the-paperback-a-world-war-ii-love-story/
1•baud147258•26m ago•0 comments

AI as a Multi-Vector Civilizational Failure [pdf]

https://osf.io/tvwum/
1•jaisupreme•28m ago•0 comments

A Month to go until release of A1200

https://www.reddit.com/r/amiga/comments/1xnot5s/a_month_to_go_until_release_of_a1200_whos_excited/
1•doener•28m ago•0 comments