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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!

Zo-Topia: My Computer in the Cloud

https://www.jplhomer.org/posts/zo-topia-my-zo-computer-experience/
1•erhuve•5m ago•0 comments

Norway EV Push Nears 100 Percent: What's Next?

https://spectrum.ieee.org/norway-ev-policy-electric-vehicles
2•rbanffy•6m ago•0 comments

How to avoid common AI pitfalls in the workplace

https://www.economist.com/briefing/2026/01/29/how-to-avoid-common-ai-pitfalls-in-the-workplace
1•Anon84•7m ago•0 comments

Apple-1 Computer Prototype Board #0 Sells for $2.7M

https://www.rrauction.com/auctions/lot-detail/350902407346003-apple-1-computer-prototype-board-0-...
1•oldnetguy•7m ago•0 comments

Nvidia's 10-year effort to make the Shield TV the most updated Android

https://arstechnica.com/gadgets/2026/01/inside-nvidias-10-year-effort-to-make-the-shield-tv-the-m...
1•vanburen•8m ago•0 comments

From bad omen to national treasure:rare bone-swallower stork saved byfemale army

https://www.bbc.com/future/article/20260128-the-protectors-of-indias-greater-adjutant-storks
1•koolhead17•8m ago•0 comments

I've been compiling my Sass wrong, for years

https://www.alwaystwisted.com/articles/ive-been-compiling-my-sass-wrong-for-years
1•speckx•10m ago•0 comments

Nailz: Input device using touch-enabled nails (2021)

https://www.youtube.com/watch?v=O_uiL49IA2I
1•downboots•10m ago•0 comments

Why Wide Top Surfaces Are Essential for Shared Spaces

https://dreamhomestore.co.uk/products/3-over-4-chest-of-drawers
1•dreamhomestore•12m ago•1 comments

Best Gas Masks

https://www.theverge.com/policy/868571/best-gas-masks
1•dtj1123•12m ago•0 comments

How to Run Self-Hosted LLMs on Kubernetes

https://oneuptime.com/blog/post/2026-01-29-self-hosted-llms-on-kubernetes/view
1•ndhandala•12m ago•0 comments

Running Out of Claude? How to Use Self-Hosted LLMs with Moltbot

https://oneuptime.com/blog/post/2026-01-30-self-hosted-llm-with-moltbot/view
2•ndhandala•13m ago•0 comments

ISS SIM

https://iss-sim.spacex.com/
1•belter•14m ago•0 comments

Why Are You Still Dizzy?

https://dizzypt.substack.com/p/why-you-are-still-dizzy-the-survival
1•DIZZYPT•15m ago•0 comments

Show HN: Unrar5j – Pure Java RAR5 Extractor

https://github.com/RealBurst/unrar5j
1•RealBurst•15m ago•1 comments

Monitiser – Automated Social Media content generation and posting

https://monitiser.com/
1•jackegerton•15m ago•1 comments

ClosedClaw

https://closedclaw.com/
1•brikym•17m ago•0 comments

A Single Diplomatic Meeting Crashed Gold 7% in One Hour

https://lightcapai.medium.com/the-geopolitical-rug-pull-how-a-single-handshake-in-ankara-crashed-...
6•sevenal•20m ago•1 comments

Show HN: UnIQum – Real-time CEX/DEX arbitrage scanner (40ms latency)

https://uniqum.io/dashboard
3•xetokky•24m ago•1 comments

The North Sea oil field used to store greenhouse gas

https://www.bbc.com/news/articles/cq5y7dd284do
3•1659447091•25m ago•0 comments

Challenges of CIAM – Navigating Security, Usability, and Compliance

https://fusionauth.io/articles/ciam/challenges-of-ciam
2•mooreds•25m ago•0 comments

Show HN: xllify turns prompts into Excel functions

https://xllify.com/
2•alexjreid•26m ago•0 comments

The systems that build star performers

https://bigthink.com/smart-skills/star-performers-david-epstein/
2•Brajeshwar•26m ago•0 comments

A just agricultural transition taking root in Brazil

https://www.just-stories.org/stories/a-just-agricultural-transition-taking-root-in-brazil
2•mooreds•27m ago•0 comments

Jews and the Amish Accidentally Invented the Same Lamp (2023)

https://www.jellomenorah.com/p/how-jews-and-the-amish-accidentally
3•mooreds•28m ago•0 comments

Deterministic Governance: mechanical exclusion / bit-identical

https://github.com/Rymley/Deterministic-Governance-Mechanism
2•verhash•29m ago•0 comments

Wasmer 7.0

https://wasmer.io/posts/wasmer-7
2•marxin•32m ago•0 comments

Show HN: Aethra – Composing music with a clean, beginner-friendly DSL

1•CzaxTanmay•33m ago•0 comments

Show HN: Underscore – Code with AI in the browser, zero setup required

https://app.underscore.is/
1•antonellof•33m ago•0 comments

Ubisoft Veteran Says He Was Suspended for Criticizing Return-to-Office Policy

https://www.gamespot.com/articles/ubisoft-veteran-says-he-was-suspended-for-criticizing-its-retur...
2•eXpl0it3r•34m ago•0 comments