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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!

Browser agent that reads a page in ~2k tokens, not ~180k

https://www.npmjs.com/package/pixelpi
1•josharsh•1m ago•0 comments

Badge of Infamy, by Lester del Rey (1957) [pdf]

https://ebook-mecca.com/online/Badge%20of%20Infamy%20-%20Lester%20Del%20Rey.pdf
1•joebig•4m ago•0 comments

DeepSeek open-sources inference optimizations with 60–85% faster generation [pdf]

https://github.com/deepseek-ai/DeepSpec/blob/main/DSpark_paper.pdf
4•aurenvale•7m ago•0 comments

The White House's post-quantum executive order is an important milestone

https://blog.cloudflare.com/post-quantum-eo-2026/
1•taubek•8m ago•0 comments

Beer CSS – Build material design in record time

https://www.beercss.com
1•Seb-C•20m ago•0 comments

Show HN: Fognitix – an autonomous desktop browser that drives itself

https://www.fognitix.com/
1•fognitix•21m ago•0 comments

Show HN: Waitlio – The waitlist software for your next launch

https://waitlio.com
1•543310•21m ago•0 comments

An extension of the traditional PDF standard

https://github.com/AlexandrosGounis/pdfx
1•SVI•21m ago•0 comments

JEP Draft: Deprecate the macOS/X64 Port for Removal

https://openjdk.org/jeps/8386091
1•Tomte•24m ago•0 comments

NYC's last horse track, Aqueduct, ending live races

https://apnews.com/article/nyc-horse-racing-track-closing-aqueduct-c52bac4978ba99d2c921408ffdf05f13
1•geox•34m ago•0 comments

What Everyone Gets Wrong About AI and Learning [video]

https://www.youtube.com/watch?v=0xS68sl2D70
1•thunderbong•37m ago•0 comments

How much does a token cost?

https://www.erikjs.com/experiences/llm-token-counter
1•csgod•41m ago•0 comments

A New Fossil Discovery Just Rewrote 150 Years of Evolutionary Theory

https://www.404media.co/a-new-fossil-discovery-just-rewrote-150-years-of-evolutionary-theory/
1•susiecambria•46m ago•0 comments

The "Digital Cash Envelope": Making Crypto Gifting as Easy as Cash

https://www.indiehackers.com/post/the-digital-cash-envelope-making-crypto-gifting-as-easy-as-cash...
1•mybucks_online•51m ago•0 comments

Eyes Do More Than See (1965) – Isaac Asimov

http://www-graphics.stanford.edu/~tolis/toli/other/eyes.html
1•kegenaar•52m ago•0 comments

Fine-tuned a model on Advaita Vedanta text

https://huggingface.co/aaravshirpurkar/turiya-model
2•aaravshirpurkar•55m ago•1 comments

Plane slams into Beijing's tallest building, sends debris raining down [video]

https://www.youtube.com/watch?v=YNJYR_HE8uo
2•Imustaskforhelp•58m ago•0 comments

Search SDK – Integrate web search into agents

https://search-sdk.dev/
1•haxzie•1h ago•0 comments

Sequence Modeling with CTC

https://distill.pub/2017/ctc/
1•diginova•1h ago•0 comments

WebSite Grader and Analytics for Small Businesses

https://stackra.app/
1•LBeck84•1h ago•0 comments

Show HN: PhoneCode: Local-First ADE Running Natively on Android

https://github.com/dttdrv/phonecode
1•dttdrv•1h ago•0 comments

A model-free runtime that holds photonic/quantum hardware steady under drift

https://compute.neophotonics.ca/
1•quantumbum•1h ago•0 comments

Higher rate limits on the Claude API

https://platform.claude.com/docs/en/api/rate-limits
1•thedebuglife•1h ago•0 comments

Show HN: Cyclearchive.com – search vintage cycling magazines

https://cyclearchive.com/search/
1•alastairr•1h ago•0 comments

How to evaluate multimodal VLMs for your video use case

https://labs.videodb.io/research/how-to-evaluate-multimodal-vlms-for-your-video-use-case
1•notTechy•1h ago•0 comments

Show HN: Brytlog – AI logger

https://github.com/Guy-Sela/brytlog
1•guy-sela•1h ago•0 comments

The US lock of the Web – ache

https://ache.one/notes/the-us-lock-of-the-web
3•abdelhousni•1h ago•0 comments

World Cup fans frustrated by 'confusing and expensive' tipping culture in US

https://www.bbc.com/news/articles/clyxgjykx7lo
8•theanonymousone•1h ago•2 comments

I owe my life to a 1913 road rage incident

https://blog.plover.com/2026/06/27/#andor
2•Tomte•1h ago•0 comments

Early Computer Viruses Spread Before the Internet

https://comuniq.xyz/post?t=1328
1•01-_-•1h ago•0 comments