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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!

Manual Work Is a Bug

https://queue.acm.org/detail.cfm?id=3197520
1•Anon84•42s ago•0 comments

Rethinking the Evaluation of Harness Evolution for Agents

https://arxiv.org/abs/2607.12227
1•Anon84•59s ago•0 comments

Generative AI is an Engineering Disaster

https://www.theatlantic.com/technology/2026/07/generative-ai-engineering-disaster/687901/
1•mizzao•1m ago•0 comments

What the I2Coalition Article Misses About DNS Abuse

https://circleid.com/posts/what-the-i2coalition-article-misses-about-dns-abuse
1•jruohonen•3m ago•0 comments

DoorDash CLI

https://twitter.com/andyfang/status/2077516962515599799
1•whalesalad•7m ago•0 comments

Skills Asset Protocol

https://neverhandedover.com
1•aznatkoiny•9m ago•0 comments

Fusing a 27B ternary LLM's whole decode step into one CUDA kernel

https://twitter.com/Akashi203/status/2077552491567157733
1•Jr23_xd•11m ago•0 comments

IBM stock closes down more than 25% after preannounced earnings results

https://finance.yahoo.com/markets/stocks/article/ibm-stock-closes-down-more-than-25-after-preanno...
1•kaycebasques•11m ago•1 comments

AI Data Center Companies for Sale – Owners Liquidating Assets Before Crash [video]

https://www.youtube.com/watch?v=iVkgD4phOHQ
1•xbmcuser•19m ago•0 comments

What makes soccer so enjoyable to watch?

https://thomasdhughes.com/the-beautiful-game/
1•thomasdhughes2•21m ago•0 comments

Shapeshifting

https://www.guidavid.com/writing/shapeshifting
2•gdss•22m ago•0 comments

Arbitration Information

https://arbitrationinformation.org
1•mtlynch•23m ago•0 comments

Free Remote Desktop Without Servers

https://github.com/Teylersf/freeremotedesk
2•pruufsocial•25m ago•1 comments

Tahr Security Skills

https://www.skills.sh/tahr-security/tahr-security-skills
2•zilbon•26m ago•0 comments

SQLite: The Advantages of Flexible Typing

https://sqlite.org/flextypegood.html
1•notRobot•26m ago•1 comments

Photo of Lionel Messi with Lamine Yamal as a Baby (2024)

https://apnews.com/article/messi-yamal-euro-photo-59f929c17bc0994134e7b63facd0ea0e
1•nither•26m ago•1 comments

Hamilton council votes down bylaw – No ban against data centre development

https://www.cbc.ca/news/canada/hamilton/data-centre-ban-voted-down-9.7271641
1•ChrisArchitect•31m ago•0 comments

The New Private Asset

https://chamath.substack.com/p/privacy-tokens
1•gmays•31m ago•0 comments

Show HN: Resultant Engineering Student Tools Site

https://resultant.tools/
2•will2092347•34m ago•0 comments

Show HN: MasterVault: Stop your LLM's context file from growing stale

https://github.com/JustMichael-80/MasterVault
1•ChronoDyneSys•36m ago•0 comments

AIcss: UI Components for AI Agents

https://www.aicss.dev
1•handfuloflight•37m ago•0 comments

Show HN: Throttle – Local Claude Cockpit for macOS, now with remote control

https://lorislab.fr/throttle/
1•lorislab•38m ago•0 comments

Asymmetric Apologies

https://sajarin.com/blog/asymmetric-apologies/
1•Sajarin•38m ago•0 comments

OpenAI is everything it promised not to be: closed-Source and for-profit (2023)

https://www.vice.com/en/article/openai-is-now-everything-it-promised-not-to-be-corporate-closed-s...
5•maxloh•38m ago•1 comments

Test-time training 3D reconstruction

https://github.com/Inception3D/TTT3R
1•soupspaces•39m ago•0 comments

Launching cdbx.ai with 50% off Pro Plans

https://cdbx.ai/
1•chbutler•39m ago•1 comments

I created S8sskills.com, an open source repo for serverless agent skills

https://s8sskills.com
1•jasonsmithio•41m ago•1 comments

End-to-end encrypted secret sharing with the Web Crypto API

https://notnotp.com/notes/end-to-end-encrypted-secret-sharing-with-the-web-crypto-api/
2•birdculture•41m ago•0 comments

Bridging the Gap Between Latent and Explicit Reasoning with Looped Transformers

https://arxiv.org/abs/2606.31779
1•simonpure•44m ago•0 comments

B.Y.O.A. – Bring Your Own Agent [video]

https://www.youtube.com/watch?v=4ISj9sxKDAQ
1•JohnBerryman•50m ago•0 comments