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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!

Sydney MP pushes to bring human composting to Australia as burial costs rise

https://www.abc.net.au/news/2026-06-25/sydney-mp-alex-greenwich-human-composting-bill-explained/1...
1•speckx•7s ago•0 comments

LinkedIn, a mass grave of ghost jobs, is now becoming a dating app

https://www.sfgate.com/tech/article/linkedin-dating-app-22340622.php
2•bookofjoe•16s ago•1 comments

Red Hat will support your RHEL forever now – for a price

https://www.zdnet.com/article/red-hat-enterprise-linux-forever-support/
2•CrankyBear•1m ago•0 comments

There's no way this bond market can fund the markets needs without higher yields

https://www.youtube.com/watch?v=W-Dxpp9YG3s
2•root-parent•1m ago•0 comments

Detained by settlers, US Democrat Ro Khanna now faces pro-Israel attacks

https://www.aljazeera.com/news/2026/7/12/detained-by-settlers-us-democrat-ro-khanna-now-faces-pro...
2•speckx•4m ago•0 comments

Tell HN: Staged NPM publishing is awful

1•electrovir•5m ago•0 comments

AI agents 136.5 times less efficient than conventional AI

https://www.theengineer.co.uk/content/news/ai-agents-1365-times-less-efficient-than-conventional-ai
2•antondd•5m ago•0 comments

From Muon to Gradient Clipping: Some Thoughts on QK Stability

https://MasterGodzilla.github.io/posts/2025/07/muon-clip/
1•Eridanus2•5m ago•0 comments

Is Proof-of-Stake the Green Future of Crypto?

https://www.disruptionbanking.com/2026/07/13/is-proof-of-stake-the-green-future-of-crypto/
1•emsidisii•5m ago•0 comments

The Fishing Contest

https://www.quarter--mile.com/The-Fishing-Contest
1•surprisetalk•7m ago•0 comments

10 Languages in 3 days: field notes from localizing an AI translation product

https://transept.ai/journal/localization-lessons-ten-languages
1•sithamet•7m ago•0 comments

Optional standards dont cut it

https://nt-ai-dc.info
1•justatdotin•8m ago•0 comments

Prefect Is Acquiring Dagster

https://dagster.io/blog/prefect-is-acquiring-dagster
1•pbronez•8m ago•1 comments

New method aims to keep kids safe from illegal AI-generated content

https://news.mit.edu/2026/new-method-keeps-kids-safe-from-illegal-ai-generated-content-0713
1•droidjj•8m ago•0 comments

A Jupiter-size planet that escaped its star's death

https://arstechnica.com/science/2026/07/a-jupiter-size-planet-that-escaped-its-stars-death/
1•rbanffy•8m ago•0 comments

Don't ask what you want. Ask who you want to be

https://softwaredoug.com/blog/2026/07/13/who-want-to-be
1•softwaredoug•9m ago•0 comments

Show HN: Replaces Supabase and FastAPI

https://github.com/backant-io/jerrycan
1•phegler•9m ago•0 comments

Coding Is a Right

https://www.nytimes.com/2026/07/13/opinion/ai-code-free-speech.html
1•runesoerensen•10m ago•1 comments

Show HN: I made another search for the HN Who Is Hiring threads

1•devzl•10m ago•0 comments

Drydock – Agile/TDD Spec Driven Delivery – Initial Release

https://github.com/webcloudstudio/Drydock
1•happyed•10m ago•0 comments

How are people securing their AI access to APIs?

https://requestrocket.com/blog/ai-agent-access-control-landscape
1•geoicons•10m ago•0 comments

You are not in the race against slop cannons

https://hils.substack.com/p/you-are-not-in-the-race-against-slop
1•herbertl•12m ago•0 comments

Easy to USE online PDF Editor with OCR, merge PDFs

https://pixoate.com/pdf-editor
1•HSK11•13m ago•1 comments

Richard Sutton Breaks Away from Keen AI to Start Oak Lab

https://twitter.com/RichardSSutton/status/2076663628301058329
1•tosh•13m ago•0 comments

Reaction: Daemon Scanning Program Outputs for Repeated Patterns and Actions

https://framagit.org/ppom/reaction
1•birdculture•14m ago•0 comments

Truth about battery fires – Gore Street Capital [video]

https://www.youtube.com/watch?v=LDMs7QQqQxE
1•leonidasrup•14m ago•0 comments

Ask HN: What Did You Work On? (June 2026)

2•adithyaharish•16m ago•0 comments

The Magic of Zakkyo Buildings

https://www.noahpinion.blog/p/a-better-way-to-build-a-downtown
1•andsoitis•16m ago•0 comments

Apple M7 Ultra Chip Planned with Up to 1.5 TB of Unified Memory

https://www.techpowerup.com/350711/apple-m7-ultra-chip-planned-with-up-to-1-5-tb-of-unified-memory
3•Tenoke•17m ago•2 comments

LingBot-Video: An open-source MoE video foundation model for embodied AI

https://github.com/robbyant/lingbot-video
1•Kajaking•17m ago•0 comments