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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!

Brazil Banned Addictive Design. The Crucial Regulatory Choices Are Still Ahead

https://www.techpolicy.press/brazil-banned-addictive-design-the-crucial-regulatory-choices-are-st...
2•rbanffy•3m ago•0 comments

Version 2.0 of AI laser mosquito defense system is here

https://twitter.com/stevencheng/status/2059950811954692451
1•throwaway2037•3m ago•0 comments

I built a shirt brand for developers who are tired of bad conference swag

https://codeculture.store/
1•emcycruz•4m ago•0 comments

Cloudflare CDN Pricing 2026: Real Cost per GB, Hidden Fees and Best Alternatives

https://blog.blazingcdn.com/en-us/what-is-the-price-per-gb-of-cloudflare-cdn
1•blazingcdn•4m ago•0 comments

Reducing Instagram's basic video compute time by 94 percent (2022)

https://engineering.fb.com/2022/11/04/video-engineering/instagram-video-processing-encoding-reduc...
1•tzury•5m ago•0 comments

Fast Food's Digital Revolution: Why Fast Food Got So Expensive [video]

https://www.youtube.com/watch?v=hIOW2HKgzPk
1•nomilk•5m ago•0 comments

A University System Went All in on A.I. Now It's Tearing Itself Apart

https://www.nytimes.com/2026/06/01/magazine/ai-university-college-california.html
1•jeffwass•8m ago•0 comments

Tracing Rays with Jank

https://jank-lang.org/blog/2026-06-01-optimization/
1•pjmlp•10m ago•0 comments

Show HN: SnapToCode – Screenshot any UI and get clean Tailwind code

https://chromewebstore.google.com/detail/snaptocode/jpchamlmjfoccmkdoiaibbpgkidapcnk
1•adithagrawaal•13m ago•1 comments

MoveCue – Hands-free movement timer for iOS

https://movecue.app
1•Bhavdiy•13m ago•0 comments

Extreme Solar Blasts and Weak Magnetic Field Are a Deadly Combination for Earth

https://www.sciencealert.com/extreme-solar-blasts-and-a-weak-magnetic-field-are-a-deadly-combinat...
1•benkan•17m ago•0 comments

Remote work – not AI – has sidelined recent college graduates, research finds

https://www.npr.org/2026/06/01/nx-s1-5843076/remote-work-college-graduates-unemployment-ai
1•benkan•21m ago•0 comments

All of these tiles are the same

https://henkreuling.nl/applets/tegels.html
1•wise_blood•22m ago•1 comments

AI marketing promotions are similar to female leak-protection products

https://imgur.com/a/rRXpppK
1•fatbrowndog•24m ago•3 comments

Show HN: ContextBridge – Local-first AI reading sidebar using Ollama

https://chromewebstore.google.com/detail/contextbridge-–-local-rag/jokgmcedjecppdfnbicfonbmgjpb...
2•sujalmeena•26m ago•0 comments

Google Maps Ditches Mercator Projection Mapping

https://glassalmanac.com/google-maps-finally-ditches-mercator-projection-mapping/
1•866-RON-0-FEZ•26m ago•0 comments

CIFSwitch: A non-universal Linux local root vulnerability

https://heyitsas.im/posts/cifswitch/
2•cosuhi•27m ago•0 comments

Show HN: Tkcore AI – A multi-model workspace with custom knowledge grounding

https://www.tkcoreai.com/
2•Sharanxxxx•28m ago•1 comments

From Headless to Agent-Native: The New Way for Content Sites

https://www.agntcms.com/manifesto
2•hramovich•32m ago•0 comments

Tantrix

https://en.wikipedia.org/wiki/Tantrix
1•thunderbong•34m ago•0 comments

Warpgate 0.24 (a client-less bastion) adds a web SSH terminal

https://github.com/warp-tech/warpgate/releases/tag/v0.24.0
1•hardex•34m ago•0 comments

Utiq: The new telecom 'Super-Cookie' threatening your privacy

https://arpokrat.com/blog/utiq-supercookie-telecom-privacy/
1•miohtama•34m ago•0 comments

Comment your AI agent below

2•Daniel-Pan•37m ago•2 comments

The Sum-Product conjecture is false for real numbers

https://arxiv.org/abs/2605.28781
1•My_Name•39m ago•0 comments

How I'm using Copilot to not use Copilot

https://kamilgwozdz.substack.com/p/how-im-using-copilot-to-not-use-copilot
1•kamil3141•40m ago•0 comments

Not Every Byte Gets a Vote

https://mitander.xyz/posts/not-every-byte-gets-a-vote/
1•mitander•41m ago•0 comments

Pacific Ocean warming signals the possible return of a strong El Niño

https://www.metoffice.gov.uk/blog/2026/met-office-what-is-el-nino-and-will-we-see-one-this-year
2•tosh•47m ago•1 comments

Taking the Training Wheels Off: Aligning LLMs Without Personas

https://www.lesswrong.com/posts/3wqZwXMzEAkd3mLLM/taking-the-training-wheels-off-aligning-llms-wi...
2•joozio•54m ago•0 comments

Tiiny AI Pocket Lab: The Offline Pocket‑Sized Supercomputer Revolution

https://www.wangdoo.com/tiiny-ai-pocket-lab-offline-supercomputer/
3•timesofireland•56m ago•0 comments

Sovereign Cloud Framework Explained

https://commission.europa.eu/news-and-media/news/sovereign-cloud-framework-explained-2026-06-01_en
3•rbanffy•57m ago•0 comments