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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 GA4 conversion in Google Ads fired on a page that returned 200 to curl

https://mojodojo.io/blog/ga4-thank-you-page-conversion-inflation
1•zenincognito•4m ago•0 comments

6.2ns TCP/UDP IP Processing

https://orthogone.com/ultra-low-latency-ethernet-mac/10g-tcp-udp-ip-core/
1•mlhpdx•8m ago•0 comments

Professional authority gave way to fragmentation and chronic failure

https://alethios.substack.com/p/unprofessionalism
1•barry-cotter•11m ago•0 comments

Google, Apple and Amazon each meet EU officials more than any EU company

https://www.ft.com/content/817f40f7-d4ac-43ee-beaf-12cfac08c621
2•snikolaev•11m ago•2 comments

Roofline analysis of Jacobi and Gauss-Seidel stencil kernels in Fortran

https://loiseaujc.github.io/posts/blog-title/roofline_analysis.html
1•loiseaujc•16m ago•0 comments

Suits Are Better Tech Than Modern Clothes

https://devz.cl/posts/the-lost-tech-in-contemporary-clothing/
2•orphereus•16m ago•0 comments

Show HN: Simple Gantt – Online Gantt chart that flags deadline risk

https://www.simplegantt.net
1•maciekdebiec•17m ago•0 comments

Scalable decision-making for games of imperfect information – Nature

https://www.nature.com/articles/s41586-026-11036-y
1•porridgeraisin•19m ago•1 comments

AI borrowers face tough sell in risky corners of US credit market

https://www.reuters.com/legal/transactional/ai-borrowers-face-tough-sell-risky-corners-us-credit-...
2•1vuio0pswjnm7•20m ago•1 comments

Free Equipment Handover Form

https://www.equiploop.co.za/tools/equipment-handover-form-generator
1•ExceedIT•20m ago•0 comments

Clausewitz, Foucault and Ukraine: When War Becomes Politics and Politics War

https://www.lvivherald.com/post/clausewitz-foucault-and-ukraine-when-war-becomes-politics-and-pol...
2•bryanrasmussen•21m ago•0 comments

FTC opens probe of Anthropic, OpenAI

https://nypost.com/2026/09/30/us-news/ftc-opens-sweeping-probe-of-anthropic-openai-and-other-supe...
2•nsagent•23m ago•1 comments

Language models will hide 'bad news' in reports by default

https://www.unite.ai/language-models-will-hide-bad-news-in-reports-by-default/
2•50kIters•25m ago•1 comments

The Life of Antony

https://penelope.uchicago.edu/Thayer/E/Roman/Texts/Plutarch/Lives/Antony%2A.html?
1•thunderbong•30m ago•0 comments

Show HN: MeetTwins, an AI that attends Google Meet and won't improvise

https://www.theregister.com/ai-and-ml/2026/09/30/show-colleagues-how-much-you-care-by-sending-an-...
1•Adityasays•37m ago•0 comments

Connection allowlists: Secure your web application's network access

https://developer.chrome.com/blog/connection-allowlist-announcement
1•nnx•40m ago•0 comments

Per Aspera Ad Profundum

https://profane-tmesis.info/ad-profundum
2•riskone•56m ago•0 comments

PKLM Sandbox – Lightweight open-source repository for PKLM Core

https://github.com/TheImmortalPython/pklm-sandbox
1•TheImmortalPyth•1h ago•0 comments

Differences Between `Foldl` and `Foldr`

https://blog.haskell.org/foldl-and-foldr/
4•signa11•1h ago•0 comments

Global bond sell-off deepens as Asian yields jump

https://www.ft.com/content/e485a228-1efe-426b-addc-26069ba48bf3
2•JumpCrisscross•1h ago•0 comments

Bill Gates's Blunt Warning on A.I

https://www.nytimes.com/2026/09/29/opinion/ezra-klein-podcast-bill-gates.html
1•andsoitis•1h ago•0 comments

Show HN: Vietnam Tender Intelligence – gov procurement data, AI-agent ready

https://apify.com/donerightlabs/tender-intelligence
1•tvttrace•1h ago•0 comments

Researcher Discovers Experimental Evidence of New Type of Magnetism

https://www.ucf.edu/news/ucf-researcher-discovers-experimental-evidence-of-new-type-of-magnetism/
2•geox•1h ago•0 comments

Continual Outreach – A self refining customer discovery process

https://github.com/giga-james/continual-outreach
1•kunggaochicken•1h ago•1 comments

Blind constraints, not blind spots

https://gmays.com/blind-constraints-not-blind-spots/
2•gmays•1h ago•0 comments

Beating the Compiler

https://www.mattkeeter.com/blog/2024-07-12-interpreter/
2•andsoitis•1h ago•0 comments

RIP Facebook

https://senecaeffect.substack.com/p/rip-facebook
2•Beijinger•1h ago•3 comments

Ao: Homoiconic Solid Modeling [pdf]

https://www.mattkeeter.com/research/ao_poster.pdf
1•andsoitis•1h ago•0 comments

Fuck Android Developer Verification Program

https://twitter.com/0xcrypto/status/2105515822643114182
17•0xcrypto•1h ago•2 comments

Chinese batteries potentially 'booby-trapped' to 'plode

https://www.youtube.com/watch?v=boI_WUtForo
2•vaxman•1h ago•1 comments