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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!

Waterloo Intern = Head of Infra

https://twitter.com/waterloo_intern/status/2057977885840036104
1•tuhins•2m ago•0 comments

Nvidia Removes Gaming Revenue Category from Financial Reports

https://www.guru3d.com/story/nvidia-removes-gaming-revenue-category-from-financial-reports/
1•theanonymousone•2m ago•0 comments

Show HN: Pilates – pure TypeScript flex layout for terminal UIs

https://github.com/pilatesjs/pilates
1•wangzhijie•4m ago•0 comments

Nuclear Power in China

https://world-nuclear.org/information-library/country-profiles/countries-a-f/china-nuclear-power
1•leonidasrup•6m ago•0 comments

Destino: Doom in Your Terminal with Node.js

https://blog.platformatic.dev/destino-doom-terminal-nodejs-ffi
1•piraccini•9m ago•0 comments

Show HN: Source screen for congressional stock disclosure claims

https://tinyopsstudio.com/congress-disclosure-now-csco-source-screen
1•tinyopsstudio•12m ago•0 comments

Telegram's MTProto: Assessing Deanonymization Potential for a Network Attacker [pdf]

https://symbolic.software/pdf/gnmx-01.pdf
1•sysoleg•13m ago•0 comments

Arsenal's title win should be studied by politicians everywhere

https://www.theguardian.com/commentisfree/2026/may/22/keir-starmer-arsenal-politics-premier-league
1•teleforce•23m ago•0 comments

Strengthening Singapore's AI Future

https://deepmind.google/blog/strengthening-singapores-ai-future-a-new-national-partnership/
1•pretext•24m ago•0 comments

Microsoft Agrees to $250M Settlement with Activision Blizzard Shareholders

https://www.law.com/delbizcourt/2026/05/22/microsoft-agrees-to-250m-settlement-with-activision-bl...
2•1vuio0pswjnm7•24m ago•0 comments

White House ordering agencies to place its new app on all employees' govt phones

https://www.govexec.com/management/2026/05/white-house-ordering-agencies-place-its-new-app-all-em...
1•mikhael•25m ago•0 comments

US tells foreigners seeking green cards: Return to your countries to apply

https://www.reuters.com/legal/government/uscis-tells-foreigners-seeking-green-cards-return-your-c...
1•tartoran•25m ago•0 comments

Publishing's Latest Piracy Problem: Audiobooks on YouTube

https://www.nytimes.com/2026/05/21/books/audiobook-piracy-youtube.html
1•thm•28m ago•0 comments

Judge considers ordering Meta to revamp its apps

https://www.politico.com/news/2026/05/22/meta-judge-trial-public-nuisance-facebook-00934485
1•1vuio0pswjnm7•29m ago•0 comments

Crypto industry braces for quantum computing threat

https://www.ft.com/content/99c1c1e7-1a1c-479c-9fc8-e21aea5c3f0e
4•thm•31m ago•1 comments

Waymo suspends all freeway rides over safety

https://www.latimes.com/business/story/2026-05-22/waymo-suspends-all-freeway-rides-over-safety
2•1vuio0pswjnm7•31m ago•0 comments

Starbucks scraps AI inventory tool after nine months

https://qz.com/starbucks-scraps-ai-inventory-tool-nomadgo-052226
2•thunderbong•31m ago•0 comments

In India, You Can Get Milk Delivered Faster Than It Takes to Make Coffee

https://www.wsj.com/business/logistics/in-india-you-can-get-milk-delivered-faster-than-it-takes-t...
2•JumpCrisscross•33m ago•0 comments

Google appeals search monopoly ruling, says it won business 'fair and square'

https://www.theverge.com/policy/936175/google-search-monopoly-ruling-appeal
2•thm•33m ago•0 comments

Cannes Film Cost $500k to Make. $400k Was AI Compute Costs

https://www.wsj.com/cio-journal/this-cannes-film-cost-500-000-to-make-400-000-was-ai-compute-cost...
5•JumpCrisscross•34m ago•0 comments

How to Be a Real Elite Programmer

https://skorks.com/2010/05/how-to-be-a-real-elite-programmer-and-make-sure-everybody-knows-it/
2•mahirsaid•37m ago•0 comments

The Fonts of the U.S. Federal Courts

https://daringfireball.net/2026/05/the_fonts_of_the_us_federal_courts
1•Tomte•40m ago•0 comments

Microsoft's new multi-model agentic security system tops leading benchmark

https://www.microsoft.com/en-us/security/blog/2026/05/12/defense-at-ai-speed-microsofts-new-multi...
3•uniclaude•46m ago•0 comments

Lisa's Copy (and Cut, and Paste)

https://unsung.aresluna.org/lisas-copy-and-cut-and-paste/
1•zdw•50m ago•0 comments

Is U.S. AI Adoption Plateauing? A Comprehensive Analysis

https://medium.com/@markchen69/is-u-s-ai-adoption-plateauing-a-comprehensive-analysis-cf5c1beef8cf
2•mgh2•54m ago•0 comments

Introducing BDD (2006)

https://dannorth.net/blog/introducing-bdd/
1•locknitpicker•55m ago•0 comments

Computing the billionth prime in 1s with LLVM IR

https://github.com/SheafificationOfG/QueenJewels
1•Murfalo•57m ago•1 comments

Is AI Becoming Too Smart for Its Own Good? [audio]

https://rss.com/podcasts/nuclecast-podcast/2811653/
1•apolloartemis•58m ago•1 comments

Gelatine Sculpt: Can This "Gelatin Trick" Transform Your Fat?

https://finance.yahoo.com/sectors/healthcare/articles/gelatine-sculpt-exploding-2026-viral-142500...
2•sarkpauz•1h ago•1 comments

Huawei's new stacking tech for high-capacity SSDs

https://www.blocksandfiles.com/flash/2026/05/21/huaweis-new-stacking-tech-for-high-capacity-ssds/...
1•yogthos•1h ago•0 comments