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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•8mo 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!

Hardware‑Attested Ad Insertion for Encrypted Video

https://www.gojiberries.io/hardware-attested-ad-insertion-for-encrypted-video/
1•neehao•2m ago•0 comments

Histomat of F/OSS: We should reclaim LLMs, not reject them

https://writings.hongminhee.org/2026/01/histomat-foss-llm/
1•todsacerdoti•5m ago•0 comments

Training large language models on narrow tasks can lead to broad misalignment

https://www.nature.com/articles/s41586-025-09937-5
1•thebeardisred•13m ago•0 comments

Hierarchy view now available in GitHub Projects

https://github.blog/changelog/2026-01-15-hierarchy-view-now-available-in-github-projects/
1•fphilipe•17m ago•0 comments

Why Go Is Going Nowhere

https://www.economist.com/asia/2026/01/15/why-go-is-going-nowhere
1•emptybits•17m ago•1 comments

Building a Unified Knowledge Graph Across Multiple Data Sources

https://www.rox.com/articles/building-a-unified-knowledge-graph-across-multiple-data-sources
1•damonlin•20m ago•0 comments

Ferrofluid Technology Becomes a Magnet for Pioneering Artists

https://spinoff.nasa.gov/Spinoff2018/cg_3.html
1•andsoitis•22m ago•0 comments

Excelsure Bookkeeping Services Corporation

https://www.facebook.com/ExcelSureBookeepingServices
1•salcatiera•25m ago•1 comments

Ask HN: Fundraising compensation

2•ebitda_ai•28m ago•0 comments

Show HN: Sigil – Track data trust at the type level

2•croolily•36m ago•0 comments

Merge Labs – Altman-Backed BCI Lab Using Biomolecular Ultrasound

https://merge.io/blog
1•vagabund•42m ago•1 comments

The Mind as a City: A Systems View of Consciousness, by Ian Reppel

https://berggruen.org/news/the-mind-as-a-city-a-systems-view-of-consciousness-by-ian-reppel
1•adityaathalye•42m ago•1 comments

Running Factorio from over 1k floppy disks

https://www.pcgamer.com/hardware/running-factorio-from-over-1-000-floppy-disks-is-a-masochistical...
1•Tomte•58m ago•0 comments

The One Simple Thing That Makes the U.S. Economy Unmanageable

https://www.thebignewsletter.com/p/the-one-simple-thing-that-makes-the
1•connor11528•1h ago•0 comments

Podpdf – Ultra-fast, zero-dependency PDF generation for Node.js and Bun

https://github.com/herolabid/podpdf
3•javatuts•1h ago•0 comments

Title: A simple dinner meeting led to a sophisticated iOS eKYC bypass

https://medium.com/@ryu360i/potential-for-iphone-ekyc-face-id-hacking-how-passcode-shouldering-se...
2•ryuzaburo•1h ago•1 comments

India Issues Final Warning to Apple in Ongoing Antitrust Case

https://www.macobserver.com/news/india-issues-final-warning-to-apple-in-ongoing-antitrust-case/
3•Brajeshwar•1h ago•0 comments

The Executive Assistant Paradox: Why AI Makes This Role Critical, Not Obsolete

https://vleech.substack.com/p/the-executive-assistant-paradox-why
3•connor11528•1h ago•0 comments

100's of hours of GTM research in seconds

https://dev.dashboard.chainfuse.ai/team/01981bfb-b6fa-78a8-937e-822018bddac0/dataspace/019a6f6c-1...
2•sushidata•1h ago•1 comments

Show HN: The viral speed read at 900wpm app

https://wordblip.com
4•Gillinghammer•1h ago•0 comments

Learning Latent Action World Models in the Wild

https://arxiv.org/abs/2601.05230
1•saswatms•1h ago•0 comments

Antigravity down for Ultra plan accounts

https://discuss.ai.google.dev/t/antigravity-broken-getting-only-agent-execution-terminated-due-to...
2•fmnxl•1h ago•1 comments

European Sovereign Cloud

https://www.chrisfarris.com/
2•weinzierl•1h ago•0 comments

OpenAI Codex with Ollama

https://ollama.com/blog/codex
1•meetpateltech•1h ago•0 comments

OpenAI Used Kenyan Workers on Less Than $2 per Hour to Make ChatGPT Less Toxic

https://time.com/6247678/openai-chatgpt-kenya-workers/
3•pabs3•1h ago•0 comments

I tricked my partner into caring about finances

https://www.indiehackers.com/post/how-i-tricked-my-partner-into-caring-about-finances-dff051a4cb
2•abbster52•1h ago•1 comments

Simulation: Jupiter holds 1.5 times more oxygen than the sun

https://phys.org/news/2026-01-jupiter-hidden-depths-simulation-planet.html
1•wglb•1h ago•1 comments

Behind Trump vs. Powell Is a Battle over US Empire's Future

https://jacobin.com/2026/01/trump-powell-fed-europe-dollars
6•kaycebasques•1h ago•0 comments

It Can Apply and Positive in Favor the Newton III Law on an Engine System Device

1•monterrey•1h ago•0 comments

State Ofthe Art Novel InFlow 1Gearturbine/Reaction 2Imploturbocompressor/Impulse

1•monterrey•1h ago•0 comments