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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!

Show HN: Repolog, website audit for SEO, performance, security, and AI readiness

https://repolog.io/
1•petersas•39s ago•0 comments

Constant Q Transform – A Visual Guide

https://brendanjameslynskey.github.io/ConstantQ-Transform/
1•hyperific•45s ago•0 comments

A graph-theoretic approach to building reliable LLM judges for retrieval

https://georgianailab.substack.com/p/evaluating-retrieval-without-ground
1•_peregrine_•2m ago•0 comments

Ask HK: How are you building AI apps today?

1•Mnexium•3m ago•0 comments

3000 tokens/sec LLM playground

https://playground.kog.ai/
1•rashkov•3m ago•1 comments

Earthly Hors D'oeuvres for Hungry Red Dwarfs

https://www.universetoday.com/articles/earthly-hors-doeuvres-for-hungry-red-dwarfs
1•rbanffy•6m ago•0 comments

Food for Agile Thought #546: Customer Research by LLM, AI Product-Market Fit

https://age-of-product.com/food-agile-thought-546-staying-human/
1•swolpers•7m ago•0 comments

A full stack platform for Edge AI from Google

https://developers.google.com/coral
1•LyalinDotCom•8m ago•0 comments

Give 'em the bones, and they'll play with it

https://blog.ninethsense.com/personal/thoughts-give-em-the-bones-and-theyll-play-with-it/
1•ankitg12•8m ago•0 comments

Project Handoff Best Practices

https://docs.gitscrum.com/en/best-practices/project-handoff-best-practices
1•ankitg12•9m ago•0 comments

Blue Origin rocket explodes on launchpad in a setback

https://www.reuters.com/science/blue-origin-says-it-faced-anomaly-during-hot-fire-test-2026-05-29/
5•onemoresoop•9m ago•1 comments

Voicepit – a feed of problems people want someone to build

https://www.voicepit.app/
1•Bernardo_Crvlh•10m ago•0 comments

The "Stars" of Titanic (2012)

https://blogs.loc.gov/inside_adams/2012/04/the-stars-of-titanic/
1•tosh•12m ago•0 comments

Show HN: TypistStories, new Gothic novel released

https://typiststories.com/
1•afonsosoares•12m ago•0 comments

Traction is all you need

https://v2.deepmyst.com/v/rM9GBT-9nLogtGvURGwtxg
1•bahaAbunojaim•14m ago•0 comments

Agents aren't the problem – Existing systems and API's were not built for AI

https://www.appfactor.io/blog/how-we-made-getprocinfo3-agent-readable-semantic-discovery-ai-enric...
1•keithneilson•14m ago•1 comments

When Houses Outrun Paychecks: The Lost Decades of Housing Affordability

https://www.stlouisfed.org/on-the-economy/2026/feb/when-houses-outrun-paychecks-lost-decades-hous...
2•littlexsparkee•14m ago•0 comments

AI Data Center Map – Visualize Water and Power Impact

https://aidatacentermap.org/
1•paulnpace•15m ago•0 comments

Show HN: Integuru – Integrate with platforms via the source code

https://www.integuru.com
3•alanloo•16m ago•0 comments

Rolled Silicon 3D Chips Could Shrink Circuits

https://spectrum.ieee.org/3d-chips
1•rbanffy•16m ago•0 comments

Organic Thinking: The Philosopher's Salon

https://mrmarket.bearblog.dev/organic-thinking-the-philosophers-salon/
1•mrmarket•16m ago•0 comments

AI Propaganda factories with language models

https://arxiv.org/abs/2508.20186
5•rramadass•17m ago•1 comments

Headway Therapy Patients Forced to Scan Their Faces to Keep Getting Care

https://www.404media.co/headway-therapy-facial-scan-biometric-data-identity-verification/
6•pavel_lishin•17m ago•0 comments

Satellite images show China preparing expansion nuclear capabilities to hit US

https://www.dailymail.com/news/article-15857901/Satellite-images-China-expansion-nuclear-missile-...
2•Bender•17m ago•0 comments

Lakebase engineering team talks database resiliency and cloud failures

https://www.databricks.com/blog/how-lakebase-architecture-stays-resilient-cloud-failures
1•sp_from_db•19m ago•0 comments

The hardest fork

https://www.chainguard.dev/unchained/the-hardest-fork
1•jerrygarcia•19m ago•0 comments

Erofs – Enhanced Read-Only File System – The Linux Kernel Documentation

https://docs.kernel.org/filesystems/erofs.html
1•speckx•21m ago•0 comments

The Lobster Did Not Consent (Because We Never Asked)

https://tjcrowley.substack.com/p/the-lobster-did-not-consent-because
2•tjcrowley•21m ago•1 comments

Show HN: JobTrue – end-to-end job search management with honest AI fit scoring

https://jobtrue.ai
2•MrJStickel•21m ago•0 comments

The Apple Neural Engine Inference Book

https://alvaro-videla.com/ane-book/
3•old_sound•22m ago•1 comments