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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!

Trump signs EO for fewer childhood vaccines, falsely linking shots to autism

https://www.cnbc.com/2026/08/10/trump-vaccine-executive-order-autism.html
1•TrackerFF•1m ago•0 comments

Terence Tao creates his first meme

https://mathstodon.xyz/@tao/117068266071803252
2•u1hcw9nx•5m ago•0 comments

London still dominates Britain's datacenter map, but the regions are powering up

https://www.theregister.com/systems/2026/08/10/london-still-dominates-britains-datacenter-map-but...
1•01-_-•6m ago•0 comments

Anthropic's New Tool Could Expose AI-Written Novels

https://www.businessinsider.com/anthropic-watermarking-feature-stops-undetected-ai-generated-writ...
1•01-_-•7m ago•0 comments

CortexBrain: A monitoring pipeline that integrates with your AI agents

https://github.com/CortexFlow/CortexBrain
1•LorenzoTettaman•8m ago•1 comments

The US hired 2k gamers to fix the air traffic control crisis

https://www.polygon.com/fortnite-united-states-air-traffic-control/
1•croes•8m ago•0 comments

First measurement of antineutrinos from spent nuclear fuel

https://www.mpi-hd.mpg.de/mpi/en/public-relations/news/news-item/first-measurement-of-antineutrin...
1•croes•15m ago•0 comments

A Simple TODO Application

https://codemadness.org/todo-application.html
2•hskimse•16m ago•0 comments

Scope and Lifetime Restrictions in Swift

https://github.com/rjmccall/swift-evolution/blob/scope-restrictions/scope-restriction-models.md
1•matt_d•23m ago•1 comments

Unikernel

https://en.wikipedia.org/wiki/Unikernel
1•tosh•24m ago•0 comments

Australian Wealth Tracker

https://auravest.ai
1•mozzinator•25m ago•1 comments

Excited to see the results of the agent memory leaderboard

https://x.com/AgentMemoryL
1•IreneAI•26m ago•0 comments

An oil field became California's first carbon vault

https://calmatters.org/environment/2026/08/california-resources-corporation-carbon-terra-vault/
1•geox•27m ago•0 comments

Instant Sudoku

https://sudokuaz.com/
2•Boryto•29m ago•0 comments

The pain of integration with the Reddit API

https://growomat.com/blog/reddit-ads-api-integration-lessons
1•nickdefo•29m ago•0 comments

Show HN: XIRP Agentic Harness by Spotify

https://xirp.spotify.com/
1•slowey•31m ago•0 comments

Scientists find 200k barrels of radioactive waste in the ocean

https://geekspin.co/scientists-find-200000-barrels-of-radioactive-waste/
3•_tk_•32m ago•1 comments

helppeer.ai

https://helppeer.ai/llms.txt
1•tosh•34m ago•0 comments

The mathematical beauty of hyperbezier curves

https://linebender.org/blog/hyperbezier/
3•coffeeaddict1•36m ago•0 comments

Stealing Reasoning Traces from Proprietary LLM APIs

https://arxiv.org/abs/2608.09867
1•sbulaev•38m ago•0 comments

Notes from China, Q3 2026

https://milan.cvitkovic.net/china_notes_q3_2026/
2•ridiculous_leke•39m ago•0 comments

AI Slop Backlash Is Starting to Change Platform Policy

https://ai-updates.net/ai-slop-backlash-changing-platform-policy/
2•ashurandi•39m ago•0 comments

Ask HN: Anyone have solution to Opus verbosity in Claude Code?

2•firemelt•40m ago•0 comments

The mathematical physics of rainbows and glories(2001) [pdf]

https://tlakoba.w3.uvm.edu/AppliedUGMath/auxpaper_rainbow_glory_review.pdf
1•num42•41m ago•0 comments

Local models will not win

https://www.seangoedecke.com/local-models-will-not-win/?trk=feed_main-feed-card_feed-article-content
4•sylvainkalache•42m ago•1 comments

AI professors are negotiating the new realities of academic research

https://www.technologyreview.com/2026/08/10/1141597/ai-professors-are-negotiating-the-new-realiti...
4•joozio•43m ago•0 comments

Invoice Software for Freelancers – InvoiceAce v2 Released

https://invoiceace.app
1•nimsarajay•44m ago•0 comments

The Water Footprint of AI

https://doi.org/10.1016/j.watres.2026.125866
3•MASNeo•44m ago•0 comments

Looking for free TTS? Try this one

https://neuronai.uz/en/tts/
1•yutabek•45m ago•0 comments

Sign of the Times: An Account of the First (In the USA) Tech Workers' Strike

https://longhaulmag.com/first-tech-workers-strike/
3•chobeat•45m ago•0 comments