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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•6mo 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!

Why Startups Die

https://www.techfounderstack.com/p/why-startups-die
1•makle•8m ago•0 comments

Show HN: Weather mini – Trip forecasts powered by Apple Intelligence

https://weathermini.app
1•kailuo•10m ago•0 comments

From Azure Functions to FreeBSD

https://jmmv.dev/2025/12/from-azure-functions-to-freebsd.html
1•todsacerdoti•11m ago•0 comments

Guidance: A cheat code for diffusion models

https://sander.ai/2022/05/26/guidance.html
1•tesserato•11m ago•0 comments

App that turns sermon notes to daily devotionals

https://apps.apple.com/us/app/serma/id6745926259
1•roosells•14m ago•1 comments

Closer Look at the Birthday Paradox [video]

https://www.youtube.com/watch?v=OUQVhnuTMVU
1•duck•15m ago•0 comments

European commission X ad account has been terminated

https://twitter.com/nikitabier/status/1997450541275005041
1•teekert•15m ago•0 comments

Show HN: Bugmail – the easiest way to catch and fix production bugs

https://www.bugmail.site/
2•bumpymark•17m ago•0 comments

Show HN: Pocket PMO – Quick free PMO oversight

https://pocketpmo.com/
1•iamasuperuser•18m ago•0 comments

Starmer's Electoral Posturing

https://rodgercuddington.substack.com/p/starmers-electoral-posturing
2•freespirt•18m ago•1 comments

Show HN: GffutilsAI, an agent to analyze genomic files

https://www.biorxiv.org/content/10.64898/2025.12.02.690645v1
1•sbassi•18m ago•0 comments

Drunk Driving – Grand Rapids Dip

https://en.wikipedia.org/wiki/Drunk_driving
1•thunderbong•19m ago•0 comments

The Collapse of Trust in AI Assistants

https://zenodo.org/records/17837188
4•businessmate•21m ago•1 comments

When software becomes fast food

https://world.hey.com/joaoqalves/when-software-becomes-fast-food-23147c9b
2•kiyanwang•25m ago•0 comments

Putin Wanted AI Supremacy. Now Russia Is Struggling to Stay in the Race

https://www.wsj.com/tech/ai/putin-wanted-ai-supremacy-now-russia-is-struggling-to-stay-in-the-rac...
1•JumpCrisscross•27m ago•0 comments

Nighttime exposure to light may raise cardiovascular risk by up to 50%

https://news.harvard.edu/gazette/story/2025/12/nighttime-exposure-to-light-may-raise-cardiovascul...
1•the-mitr•27m ago•0 comments

The power crunch threatening America's AI ambitions

https://subs.ft.com/products
1•JumpCrisscross•30m ago•0 comments

Agent Definition Language (ADL): An Open Standard for Defining AI Agents

https://github.com/nextmoca/adl
1•swanandrao•31m ago•0 comments

Show HN: Lockenv – Simple encrypted secrets storage for Git

https://github.com/illarion/lockenv
2•shoemann•36m ago•0 comments

Foyer 0.21.0 is out: Hybrid in-memory and disk cache in Rust

https://github.com/foyer-rs/foyer/discussions/1210
1•tison•40m ago•0 comments

Why Is the Internet Becoming TV?

https://calnewport.com/why-is-the-internet-becoming-tv/
3•ingve•41m ago•0 comments

An EU startup just beat Nvidia in AI hardware

https://www.techradar.com/pro/obscure-eu-ai-startup-outs-massive-chip-that-has-16-384-simd-proces...
1•mnewme•42m ago•0 comments

Icons in Menus Everywhere: Send Help

https://blog.jim-nielsen.com/2025/icons-in-menus/
3•ingve•44m ago•0 comments

Agent Definition Language (ADL): An Open Standard for Defining AI Agents

https://www.nextmoca.com/blogs/agent-definition-language-adl-the-open-source-standard-for-definin...
1•swanandrao•45m ago•0 comments

Remaking Globalization for an Era of Trade Wars / Interview with Michael Pettis

https://jacobin.com/2025/12/globalization-free-trade-tariffs-debt-keynes
1•valeg•45m ago•0 comments

Show HN: Goodreads Wrapped - Spotify Wrapped for Goodreads

https://www.goodreadswrapped.com/
1•angelinawwu•46m ago•0 comments

Millions of Locations for Thousands of Brands

https://tech.marksblogg.com/alltheplaces.html
1•marklit•47m ago•0 comments

Microservices Should Form a Polytree

https://bytesauna.com/post/microservices
2•mapehe•48m ago•1 comments

Married millennials, here comes the crypto divorce cliff

https://www.cnbc.com/2025/12/07/millennials-bitcoin-crypto-divorce-law.html
2•em3rgent0rdr•50m ago•0 comments

IBM nears $11B confluent deal

https://www.reuters.com/technology/ibm-nears-roughly-11-billion-deal-confluent-wsj-reports-2025-1...
1•hulahoof•51m ago•1 comments