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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!

Semantic caching has a structural gap that no threshold fixes

https://github.com/KushagraKanaujia/throttle/blob/main/scripts/negation_check.py
1•JohnScheuer•4m ago•0 comments

Show HN: A proxy that makes Forgejo speak the GitHub API

https://github.com/ThatXliner/anvil
1•thatxliner•10m ago•0 comments

The AI founders who walked away from Bezos-backed Prometheus to model universe

https://www.reuters.com/business/ai-founders-who-walked-away-bezos-backed-prometheus-model-univer...
1•petethomas•15m ago•0 comments

Extension 'ms-VSCode-remote.remote-SSH' CANNOT use API proposal

https://github.com/microsoft/vscode/issues/329735
2•themostunique•18m ago•0 comments

Students prefer Gemini over ChatGPT and Claude for AI essays in blind tests

https://studyarena.com/blog/chatgpt-vs-claude-vs-gemini-college-essays-2026
1•pasharayan•19m ago•0 comments

BetterReads: Read/Import/Track/Understand

https://www.betterreads.online
1•zlu•20m ago•1 comments

Data Centers Are Driving an Alarming Gas Power Expansion in the US

https://www.wired.com/story/us-data-centers-drive-gas-power-expansion/
2•newsomix9xl•23m ago•0 comments

Neuromancer Official Teaser

https://www.youtube.com/watch?v=g79GPZSQHBk
2•wslh•24m ago•0 comments

Ask HN: What is one simple thing LLMs are insanely bad at?

7•davidest•25m ago•10 comments

Plans for nuclear-powered merchant ships must confront risks

https://www.nature.com/articles/d41586-026-02388-6
1•mmooss•25m ago•0 comments

What platform has the best AI CMO?

1•probablygrillin•29m ago•0 comments

ILSpy in the Browser

https://osenkov.com/ilspy/
1•l33t_d0nut•31m ago•0 comments

Visual Analysis of Binary Files

https://binvis.io/#/
2•vismit2000•31m ago•0 comments

Show HN: Implementation of Kimi K3 in PyTorch

https://www.youtube.com/watch?v=U6sobPCsdaY
1•prasoon21•34m ago•0 comments

Darkbloom (AI inference on idle Macs) – security audit with PRs submitted

https://gist.github.com/mudiam/1ffc898333ac3d5bdc5d7fac96d33360
2•mudiam•39m ago•0 comments

RL Environments are all you need

https://twitter.com/madiator/status/2084657077637746957
2•gmays•41m ago•0 comments

Libracy – An ad-free, minimalist book tracker without social feeds

https://play.google.com/store/apps/details?id=com.libracy.app&hl=en_US
2•cehnzzdev•46m ago•0 comments

AWS Activate Credits

https://aws.amazon.com/
4•m4sk1994•47m ago•0 comments

Scottish photographer shot portraits of Alabama gingers to find American unity

https://www.al.com/news/2026/08/scottish-photographer-shot-stunning-portraits-of-alabama-gingers-...
2•thunderbong•53m ago•1 comments

Show HN: Browser automation with no chromedriver and no Node driver

https://github.com/angeldevmobile/Orion
3•usxr1515•56m ago•0 comments

Bitcoin's $80k Test: A Renewed Rally Puts Prediction Markets on Alert

https://predx-article.fika.bar/bitcoin-s-80-000-test-a-renewed-rally-puts-prediction-mark-01M0VF5...
3•joeymabia1•57m ago•0 comments

RL Contributes to Illegible Reasoning Traces in Hard Problems

https://arxiv.org/abs/2510.27338
2•make3•1h ago•0 comments

Flipping Pages / Audrey Gu

https://audreygu.io/entry/flipping_pages
4•cwervo•1h ago•1 comments

Cursor drops mandatory arbitration and class-action waiver, sends disputes to TX

https://tostracker.app/briefing/anysphere-cursor-arbitration-removed-2026-08
2•tldrthelaw•1h ago•1 comments

Agentic Context Management: Memory and Cost as Architecture Problems

https://arxiv.org/abs/2607.21503
5•gdad•1h ago•1 comments

Curves of Constant Width

https://www.ztlawton.com/socw/curves-of-constant-width.html
4•vismit2000•1h ago•0 comments

Wikinews

https://en.wikipedia.org/wiki/Wikinews
4•wseqyrku•1h ago•3 comments

Dog Can Tell When You're Happy

https://time.com/article/2026/08/10/your-dog-can-tell-when-youre-happy/
3•gmays•1h ago•0 comments

Managed Deep Agents is now in public beta

https://www.langchain.com/blog/managed-deep-agents-is-now-in-public-beta
3•gmays•1h ago•0 comments

Think, Don't Speak

https://sspai.net/think-dont-speak/
4•firexcy•1h ago•1 comments