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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•11mo 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!

Hackers breach JDownloader website to serve malware-laced downloads

https://www.neowin.net/news/if-you-downloaded-this-popular-software-recently-you-might-have-insta...
1•bundie•59s ago•0 comments

Show HN: NanoCorp – Create autonomous companies run by AI

https://www.nanocorp.so
1•AdrienBA•1m ago•1 comments

How dangerous is Anthropic's Mythos AI? - Bruce Schneier

https://www.theguardian.com/commentisfree/2026/may/08/how-dangerous-is-anthropics-mythos-ai
1•kuerbel•3m ago•0 comments

Papers That Inspire Wonder

https://nicholasdecker.substack.com/p/100-papers-that-inspire-wonder
2•surprisetalk•5m ago•0 comments

PostgreSQL's Aggregate Filter Will Spoil You

https://stokerpostgresql.blogspot.com/2025/02/how-postgresqls-aggregate-filter-will.html
1•surprisetalk•5m ago•0 comments

SpaceX is starting to move on from the most successful rocket

https://arstechnica.com/space/2026/05/spacex-is-starting-to-move-on-from-the-worlds-most-successf...
1•rbanffy•8m ago•0 comments

Apple's Camera-Equipped AirPods In Late State Testing

https://www.bloomberg.com/news/articles/2026-05-07/apple-s-camera-equipped-airpods-reach-advanced...
1•flippyhead•9m ago•0 comments

I've been trying to understand how antennas work ...

https://cloudisland.nz/@pjf/114821653743562368
1•ColinWright•9m ago•0 comments

The Other (Analog) Computer

https://www.therml.ai/blog/two-tracks
1•Anon84•9m ago•0 comments

Printing Press – Print the best agent-designed CLI of all time

https://printingpress.dev/
1•Anon84•10m ago•0 comments

Nuclear-Powered Shipping Initiative Push to Revive U.S. Maritime Industry

https://gcaptain.com/trump-administration-launches-nuclear-powered-shipping-push-to-revive-u-s-ma...
1•mpweiher•10m ago•0 comments

The Magnet Beneath Every Robot Joint – Atoms to Algorithms

https://atomsfrontier.substack.com/p/the-magnet-beneath-every-robot-joint
1•jpatel3•10m ago•0 comments

US Government releases first batch of UAP documents

https://www.war.gov/UFO/
2•david-gpu•10m ago•2 comments

If You Can Make a Compute Engine, You Can Sell a Compute Engine

https://www.nextplatform.com/compute/2026/05/06/if-you-can-make-a-compute-engine-you-can-sell-a-c...
1•rbanffy•11m ago•0 comments

The Impact of AI-Generated Text on the Internet

https://ai-on-the-internet.github.io/
1•TheWeiHu•12m ago•0 comments

A life in pictures: celebrating David Attenborough at 100

https://www.nature.com/immersive/d41586-026-01371-5/index.html
2•sohkamyung•14m ago•0 comments

Python 3.15.0 beta 1 is here

https://blog.python.org/2026/05/python-3150-beta-1/
2•GalaxySnail•14m ago•0 comments

BeeL – VeriFactu-compliant invoicing API for Spain

https://beel.es
2•massanaRoger•15m ago•0 comments

David Attenborough's 100th Birthday

https://www.bbc.com/news/articles/cp3pww9g0p5o
3•defrost•17m ago•0 comments

Show HN: Rfp.ai – answer RFPs from approved docs, with source citations

https://rfp.ai/
3•dutchcode•18m ago•0 comments

Benchmarking AI agent retrieval strategies on Kubernetes bug fixes

https://www.cncf.io/blog/2026/05/08/benchmarking-ai-agent-retrieval-strategies-on-kubernetes-bug-...
2•xngbuilds•19m ago•0 comments

The future of work is world models

https://www.strangeloopcanon.com/p/the-future-of-work-is-world-models
2•surprisetalk•20m ago•0 comments

Repomind – 256K context coding agent on a single AMD MI300X (FP8)

https://github.com/SRKRZ23/repomind
2•sardor_r1•21m ago•0 comments

Shader Model 6.10 Preview and AgilitySDK 720 Preview

https://devblogs.microsoft.com/directx/shader-model-6-10-agilitysdk-720-preview/
2•ibobev•23m ago•0 comments

D3D12 LinAlg Matrix Preview

https://devblogs.microsoft.com/directx/d3d12-linalg-preview/
2•ibobev•23m ago•0 comments

Quantizing Tangent Frames

https://zeux.io/2026/04/30/quantizing-tangent-frames/
2•ibobev•23m ago•0 comments

Building an Open Source 7MB AI Terminal with Agents and Code Editor (Rust/Tauri)

https://github.com/crynta/terax-ai
2•crynta•25m ago•1 comments

The reason that everybody use LLMs [video]

https://www.youtube.com/watch?v=xE9W9Ghe4Jk
2•modinfo•25m ago•0 comments

Gnome Surface next-generation AI desktop platform built with GirCore-SkiaSharp

https://github.com/GnomeMaui/surface
2•czirok•26m ago•0 comments

Sumud flotilla ships released from Greek detention

https://www.marinetraffic.com/en/ais/home/shipid:85582/zoom:10
2•burnt-resistor•28m ago•1 comments