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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!

The Green Side of the Lua

https://arxiv.org/abs/2601.16670
1•radiator•1m ago•0 comments

Star Citizen game has reached $1B in funding

https://robertsspaceindustries.com/en/funding-goals
1•speckx•3m ago•0 comments

Show HN: JavaScript Crossword – a crossword where the clue = eval(answer)

https://lyra.horse/fun/jscrossword/
1•rebane2001•4m ago•0 comments

No Asterisk Products Manifesto: hardware that works when the servers go down

https://noasteriskproducts.org/
1•brooklyntom•12m ago•0 comments

Built a small PR guardrail for token bloat, worth maintaining?

https://github.com/unloopedmido/contextlevy
1•nonlooped•15m ago•0 comments

Test

1•sillysaurusx•16m ago•0 comments

Cracked in under a minute: (nearly) every other password

https://www.kaspersky.com/blog/passwords-hacking-research-2026/55743/
1•gnabgib•21m ago•0 comments

The Enhanced Games: It's like the Olympics – except steroids are allowed

https://www.bbc.com/news/articles/cedpz1zqp8po
2•busymom0•22m ago•1 comments

Librarian: Tidy Up the Arcane Library

https://store.steampowered.com/app/4197610/Librarian_Tidy_Up_the_Arcane_Library/
1•doener•23m ago•0 comments

What Are Atoms Made Of?

https://johncarlosbaez.wordpress.com/2026/05/24/what-are-atoms-made-of/
1•mathgenius•23m ago•0 comments

Show HN: Tuie - A rich, performant TUI library for rust

https://github.com/jake-stewart/tuie
1•vim-god•25m ago•0 comments

TID: Linux kernelmodule–flushes CPU cache after wiping sensitive data CLFLUSHOPT

https://github.com/ahmaaaaadbntaaaaa-byte/TID-The-Instant-Destroyer
1•TID_Ahmad•26m ago•0 comments

Anthropic and OpenAI race to embed engineers inside Wall Street workflows

https://thenewstack.io/anthropic-openai-wall-street-ai-agents-developers/
1•dr_dshiv•29m ago•0 comments

What to know about the AI models that are jolting Washington

https://www.politico.com/news/2026/05/24/anthropic-openai-mythos-what-to-know-00934668
2•TMWNN•32m ago•1 comments

AI for Design Needs Solving

https://freedium-mirror.cfd/https://medium.com/@mini.1409/ai-for-design-needs-solving-db3f11af77d4
1•vinayak-shukla•37m ago•0 comments

AI in journalism: Live tracker of scandals and mistakes

https://pressgazette.co.uk/publishers/digital-journalism/ai-journalism-mistakes/
2•gnabgib•37m ago•0 comments

I Mistook Movement for Life

https://www.sashankaryal.com/posts/2026-05/24
1•sashankaryal•37m ago•0 comments

Why Trump Lost to Iran

https://www.theatlantic.com/politics/2026/05/why-trump-lost-iran/687291/
2•chmaynard•38m ago•1 comments

Snuffleupagus, a newly described species, is an adorable little predator

https://www.cbc.ca/radio/asithappens/snuffleupagus-fish-9.7207623
3•curmudgeon22•39m ago•0 comments

Seagulls in sharp decline because they can't cope with modern life

https://www.edp24.co.uk/news/26118875.new-bto-report-reveals-seagulls-sharp-decline/
2•austinallegro•40m ago•0 comments

Predicting AI Job Exposure

https://www.ben-evans.com/benedictevans/2026/5/24/ai-job-exposure
1•chmaynard•40m ago•0 comments

ROCm 7.13: Expanding Hardware, Tools, and Reach

https://rocm.blogs.amd.com/ecosystems-and-partners/rocm-7.13-blog/README.html
2•mindcrime•46m ago•0 comments

Arcana: Shape the Language. Control the Machine

https://github.com/Zick9510/Arcana
1•Zick9510•47m ago•0 comments

How to build your own software factory

https://web.navan.dev/posts/2026-05-06-how-to-build-your-own-software-factory.html
2•_doctor_love•49m ago•0 comments

AI is becoming increasingly unpopular

https://www.marketscreener.com/news/ai-is-becoming-increasingly-unpopular-ce7f5ad9d88af026
4•olalonde•51m ago•0 comments

Portability Is a Myth: Why the Best AI Stacks Will Never Be Hardware-Agnostic

https://twitter.com/PatrickToulme/status/2055709800986780028
1•gmays•1h ago•0 comments

AI-Driven Design Automation

https://en.wikipedia.org/wiki/AI-driven_design_automation
1•_doctor_love•1h ago•0 comments

There's Never Been a Better Time to Study Computer Science

https://www.theatlantic.com/technology/2026/05/computer-science-major-coding-ai/687279/
4•zekrioca•1h ago•1 comments

"Work hard, travel harder, laugh loudest."

https://www.effectivecpmnetwork.com/gkryg1snc?key=14cf5aa74691cae937b1f8b3ab8464ff
2•Charlottefgth•1h ago•0 comments

"Let's skip the small talk and discuss our favorite childhood cartoons."

https://www.meet2live.online/
2•Ameliadrtr•1h ago•0 comments