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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!

BitTorrent's disastrous, legendary, and controversial story

https://www.theverge.com/tech/959848/bittorrent-story-25-years-piracy
1•Logans_Run•2m ago•0 comments

Show HN: Kube-insight – retained Kubernetes evidence for incident investigations

https://github.com/nowakeai/kube-insight
1•simalapo•3m ago•0 comments

Fedora Council Seeks to Shutdown Current Discussions over AI Developer Desktop

https://www.phoronix.com/news/Fedora-Council-AI-Desktop
1•rbanffy•4m ago•0 comments

LittleFedi: Light, yet Complete

https://rpi0w.stefanomarinelli.it/@stefano/687a61e9-dae7-4ed2-8c2e-94dfe0bd550c
1•doener•7m ago•0 comments

The security of modern password expiration (2010)

https://dl.acm.org/doi/10.1145/1866307.1866328
1•Tomte•7m ago•0 comments

Video game play linked to small boost in memory and cognitive abilities

https://www.sciencedirect.com/science/article/pii/S000169182600911X
1•giuliomagnifico•9m ago•0 comments

An AI that finds B2B leads while you work

https://www.relay-brief.com
1•mathias8dev•9m ago•0 comments

Great Songs Are Still Being Made: This Is the Killer Speaking

https://medium.com/the-hitmagist/great-songs-are-still-being-made-this-is-the-killer-speaking-ce3...
1•bryanrasmussen•9m ago•0 comments

Show HN: Hide an encrypted message inside a photo, in the browser

https://vajba.com/hide-message-in-image/
1•trivsamt•11m ago•0 comments

Show HN: Wikicube: instant wiki for any GitHub repo

https://wikicube.vercel.app/wiki/emmett-framework/granian
1•cpnwaugha•12m ago•0 comments

Wine 11.12 Released with Wayland Fractional Scaling, Other Wayland Enhancements

https://www.phoronix.com/news/Wine-11.12-Released
2•rbanffy•13m ago•0 comments

Rosenhan Experiment

https://en.wikipedia.org/wiki/Rosenhan_experiment
1•thunderbong•13m ago•0 comments

Bowlers Have Snapped over Wall Street's Takeover of the Sport

https://www.wsj.com/lifestyle/bowling-lucky-strike-lanes-private-equity-lawsuit-6763761f
1•impish9208•16m ago•1 comments

Quake Turns 30: John Romero Plays [video]

https://www.youtube.com/watch?v=y3Wekr-wnic
2•skibz•17m ago•0 comments

Many people misunderstand the purpose of code review

https://mathstodon.xyz/@mjd/115096720350507897
4•ColinWright•17m ago•0 comments

US PC shipments fell 7.0% in 1Q26, forecasted to fall 14% in 2026

https://omdia.tech.informa.com/pr/2026/june/us-pc-shipments-fell-7percent-in-1q26-marking-steepes...
1•giuliomagnifico•18m ago•0 comments

What Emily Bender Meant by "Stochastic Parrots"

https://spectrum.ieee.org/stochastic-parrot
1•rbanffy•19m ago•0 comments

Show HN: I measured the half-life of 41,301 Show HN launches. It's 7 hours

https://jonno.nz/posts/your-show-hn-dies-in-7-hours/
4•jonnonz•20m ago•0 comments

Why OOP Is Inherently Harmful: A Solution

https://notes.shixiangxi.com/en/docs/dual-world-theory/theory/
3•sxx0•21m ago•1 comments

The Perfect Match by Ken Liu (2012)

https://www.lightspeedmagazine.com/fiction/the-perfect-match/
1•laybak•22m ago•1 comments

To be trustworthy, LLMs need to show their work

https://cen.acs.org/pharmaceuticals/drug-discovery/AI-Chemist-trustworthy-LLMs-need/104/web/2026/06
2•ColinWright•23m ago•0 comments

PromptQL Tag – The company-wide AI agent for Slack

https://promptql.io/promptql-tag-slack-agent
1•gavinray•24m ago•0 comments

Deepest hand dug well in the world

https://www.mybrightonandhove.org.uk/places/utilities/woodingdean-well/woodingdean-well
1•zeristor•25m ago•1 comments

Liberty and Absurdity in 2026

2•dranimalz•25m ago•0 comments

Show HN: Domternal – headless rich-text editor for Angular/React/Vue/Vanilla

https://domternal.dev/
1•thomasnowhere•27m ago•0 comments

Vite+ Beta

https://voidzero.dev/posts/announcing-vite-plus-beta
3•Erenay09•28m ago•0 comments

Anthropic embedded spyware in Claude Code – and attempted to hide it from you

https://old.reddit.com/r/ClaudeAI/comments/1ujila1/anthropic_embedded_spyware_in_claude_code_and/
2•rvnx•29m ago•0 comments

Discovering My Talk

https://shkspr.mobi/blog/2026/01/discovering-my-talk/
2•ColinWright•29m ago•0 comments

Krafton Agrees to Pay 'Subnautica 2' Bonuses as Developer's CEO Resigns

https://www.bloomberg.com/news/articles/2026-07-01/krafton-agrees-to-pay-subnautica-2-bonuses-as-...
1•croes•30m ago•0 comments

Integrating Netty with Java Virtual Threads

https://kronotop.com/blog/the-join-that-should-be-a-bug/
1•mastabadtomm•31m ago•0 comments