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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!

New Patches for Linux's Zswap Show Major Improvements

https://www.phoronix.com/news/Linux-Better-Zswap-Performance
2•Bender•1m ago•0 comments

XMFS: Experimental File-System Being Worked on by Huawei Modern Linux Servers

https://www.phoronix.com/news/XMFS-Linux-File-System
3•Bender•1m ago•0 comments

Microsoft's Surface Laptop Ultra Wants to Bring the Only Laptop You'll Ever Need

https://gizmodo.com/microsoft-surface-laptop-ultra-specs-pricing-2000822871
2•flowerlad•1m ago•0 comments

70 years of rebranding intelligence [video]

https://www.youtube.com/watch?v=jh9LF6Lc3Vs
2•spudlyo•1m ago•0 comments

I'm not paying $20 for ChatGPT or Claude because a free local LLM does

https://www.xda-developers.com/im-not-paying-20-for-chatgpt-claude-or-gemini-because-a-free-local...
2•hsnewman•2m ago•0 comments

Half a Century: From Dial-Up Modems to AI, and Everything in Between

https://medium.com/@akumpera/half-a-century-from-dial-up-modems-to-ai-and-everything-in-between-b...
2•gfalcao•4m ago•0 comments

Will Zuckerberg, Musk and Altman movies make a dent on tech giant evangelism?

https://www.theguardian.com/film/2026/oct/07/the-social-reckoning-musk-and-artificial-zuckerberg-...
5•devonnull•5m ago•0 comments

You have to be able to reason about the verification

https://www.brandons.me/blog/you-have-to-be-able-to-reason-about-the-verification
3•brundolf•5m ago•0 comments

A 5.3M-year-old deep-sea whale necropolis in the Diamantina Zone

https://www.nature.com/articles/s41586-026-10546-z
2•bryanrasmussen•6m ago•0 comments

Surface RTX Spark Dev Box is available for preorder for $5,999

https://www.theverge.com/tech/1006915/microsoft-surface-rtx-spark-dev-box-preorder
3•flowerlad•7m ago•0 comments

The Terminal Dev Stack I Wanted 10 Years Ago

https://sarah-robin.com/blog/ultimate-terminal-dev-stack-neovim
2•sarah-robiin•8m ago•0 comments

GTA V in a browser tab: Rockstar's own engine, recompiled to wasm64 and WebGPU

https://ai.thesatyajit.com/articles/gta5-in-the-browser
2•part_of_light•9m ago•0 comments

Ask HN: Which frontier model can do code security reviews

2•Bender•10m ago•0 comments

Neanderthals Were Adept Woodworkers Too

https://nautil.us/neanderthals-were-adept-woodworkers-too-1285608
2•Tomte•10m ago•0 comments

The Superexponential Research Publication Boom

https://paradigm.xyz/research/publication-boom/
1•ckraeuter•11m ago•0 comments

When the machine boots but the reply disappears

https://mainbrella.com/blog/inside-our-brella/
2•cs1996•11m ago•0 comments

Mistral Large 4: Is It a Failure? [video]

https://www.youtube.com/watch?v=QkUwqqGK5pw
1•rene_d•11m ago•1 comments

Back to BASICs with a Pro Micro Microcontroller

https://kevinboone.me/pmbasic.html
2•andrewstuart•12m ago•0 comments

AI Model Groupthink

https://magicnumbers.io/2026/10/06/ai-model-groupthink/
2•io84•12m ago•0 comments

Decode Decoded

https://zhebrak.io/posts/decode-decoded/
1•speckx•14m ago•0 comments

Show HN: POSIX-UEFI

https://gitlab.com/bztsrc/posix-uefi
1•skrellm•15m ago•0 comments

The Future of Knowledge Inside the Enterprise

https://philippdubach.com/posts/future-of-knowledge-inside-the-enterprise/
1•7777777phil•15m ago•0 comments

The Canada-US border runs through a 1904 library's reading room

https://pub-a941bfd863a24f91a60e6c4979c18a84.r2.dev/pi-sandbox-uploads/364168757079183360/2026-10...
2•offthemapalex•15m ago•0 comments

Show HN: Karotte, a framework for building robust RL envs

https://github.com/preferencemodel/karotte
5•256•15m ago•0 comments

The Surface Laptop Ultra coming on Oct 16 – and a starting price of $2,599

https://www.theverge.com/news/1006378/microsoft-surface-laptop-ultra-pricing-release-date
3•utiiiD•16m ago•0 comments

Using real shadows to make a video game

https://www.instagram.com/reel/DeB5R7DhJjC/
2•stared•17m ago•1 comments

A tool to extract the text from Bill Gates' The Road Ahead companion CD-ROM

https://github.com/kevinmmccormick/road-behind
1•kevinmmccormick•17m ago•1 comments

Funding the AI revolution: evidence from euro area sectors

https://www.ecb.europa.eu/press/blog/date/2026/html/ecb.blog20261006~35bf3c24cb.en.html
2•giuliomagnifico•17m ago•0 comments

Wiley agrees to 50-50 split with Dummies authors in Anthropic settlement

https://bsky.app/profile/victoriastrauss.com/post/3mwwcap7os22x
1•ilamont•19m ago•0 comments

Claude Haiku 5.5

https://twitter.com/claudeai/status/2107894039626277339
3•denysvitali•19m ago•0 comments