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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!

Analysis and Visualization of the Linux Kernel's Software Evolution

https://arxiv.org/abs/2610.09910
1•jruohonen•3m ago•1 comments

Xicago Mono: Classic macOS font for your terminal

https://ideasman42.codeberg.page/font-xicago-mono/
1•ideasman42•4m ago•1 comments

Show HN: Minimal documentation tool that expands code blocks in Markdown files

https://github.com/aartur/docexp
1•aartur•4m ago•0 comments

Monowitz Concentration Camp

https://en.wikipedia.org/wiki/Monowitz_concentration_camp
1•joebig•4m ago•0 comments

Kubernetes on cgroup v1 is dead. Here's what comes next

https://thenewstack.io/kubernetes-node-swap-ai/
1•pacoxu2025•8m ago•0 comments

Self-Hosted PostHog: Installation, Costs and Pitfalls

https://3hcloud.com/blog/posthog-self-hosting
1•Liriel•8m ago•0 comments

Using AI for just 10 minutes erodes your ability to persist at hard things

https://news.berkeley.edu/2026/10/09/using-ai-for-just-10-minutes-erodes-your-ability-to-persist-...
1•msalsas•9m ago•0 comments

When Ldaxr Doesn't Work: Exclusive Accesses and Cacheability on AArch64

https://joelsiks.com/posts/aarch64-exclusive-access-cacheability/
1•joelsiks•10m ago•0 comments

T. Campbell's Theory of Everything

https://loc.closertotruth.com/theory/campbell-s-theory-of-everything
1•jruohonen•11m ago•0 comments

Gemini Flash and Pro move to paid plans, leaving free users with only Flash-Lite

https://support.google.com/gemini/answer/17004136?hl=en
2•maxloh•13m ago•0 comments

`123456' password used in Danish CPR data breach

https://cphpost.dk/2026-10-10/news/round-up/123456-password-used-in-massive-danish-cpr-data-breach/
6•baal80spam•14m ago•0 comments

GTA V Running on iOS

https://github.com/c22dev/muguet
2•Alifatisk•18m ago•1 comments

JetBrains Advertising Kotlin in London Tube/Subway

https://www.reddit.com/r/Kotlin/comments/1x28h3u/spotted_in_london_tube_northern_line_yesterday/
1•theanonymousone•19m ago•0 comments

DOJ, FBI Seize Chinese State-Sponsored Hackers' Scanning and Phishing Tools

https://www.justice.gov/opa/pr/justice-department-and-fbi-seize-vulnerability-scanning-and-spear-...
2•mgaldys4•22m ago•0 comments

What's It Like to Be a Dolphin?

https://www.skeptic.com/disabled_js/
1•jruohonen•24m ago•1 comments

Show HN: Offline voice assistant, NO dedicated GPU, less 15Gb RAM

https://grigio.org/offline-voice-assistant-no-dedicated-gpu-less-15gb-ram/
1•grigio•25m ago•0 comments

AI Data Centers Not Paying Their Costs, Will Keep Using NDAs and Seek Tax Breaks

https://www.warren.senate.gov/newsroom/press-releases/ai-data-center-companies-reveal-to-warren-b...
2•DeepLogin•36m ago•0 comments

Code Security Review Tool

https://reviewcode.org/
3•cphr•38m ago•0 comments

JetBrains Air

https://www.jetbrains.com/air/
2•ivanjermakov•43m ago•0 comments

Anthropic bans users from needless abusive or cruel behavior towards Claude

https://www.anthropic.com/news/2026-usage-policy-update
2•lopatin•46m ago•0 comments

Lumentum sold out of AI server parts till 2029

https://www.japantimes.co.jp/business/2026/10/09/companies/lumentum-ai-server-sold-out/
3•giuliomagnifico•48m ago•0 comments

WARC (File Format)

https://en.wikipedia.org/wiki/WARC_(file_format)
2•tosh•48m ago•0 comments

Jeyzma is TypeSafeAI minus $850M plus Go/TinyGo/llama.cpp in the browser

https://jeyzma.com/
2•deadprogram•49m ago•0 comments

Haydn-01 – music recognition and text model

https://twitter.com/generativexp/status/2108400091954286910
1•quicheshore2003•52m ago•0 comments

Anonymous Surveys with Authentication Using RSA Blind Signatures

https://blogs.lupyd.com/blog/introducing-noon-anonymous-form-submissions/
2•tenesripranav•54m ago•0 comments

Apple Watch Connector for Android, Linux, Windows

https://github.com/LordixDemon/apple_watch_connector
1•avipars•58m ago•0 comments

Interactive Museum of Windows Media Player Skins

https://wmp-skin-museum.mitpit.com/
1•MitPitt•59m ago•0 comments

WebSocket Servers in JavaScript: Node.js, Bun and Deno in 2026

https://lemire.me/blog/2026/10/10/websocket-servers-in-javascript-node-js-bun-and-deno-in-2026/
3•smilelamp•1h ago•1 comments

Show HN: Save photo, video, and audio from websites in one step

https://menura.download
7•haneboxx•1h ago•0 comments

Ctrl + Shift + A to search tabs on Firefox

https://gist.github.com/radiantly/f18ea1fd06d8dd328b6ae64b6fa7cb36
4•calmingsolitude•1h ago•0 comments