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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!

The Patch Paradox

https://whiletruelearn.dev/essays/patch-paradox/
1•krishnasangeeth•1m ago•0 comments

Bash Aliases

https://github.com/ctrlaltvikas/Awesome-Bash-Aliases
1•vikaskyadav•1m ago•0 comments

Twenty-Four Years of Wiki Engines

https://taoofmac.com/space/blog/2026/08/02/1130
1•rcarmo•2m ago•0 comments

Everything about my smart home and homelab setup

https://swiftrocks.com/everything-about-my-smart-home-and-homelab-setup
1•rockbruno•2m ago•0 comments

The Invariant Is Hiding

https://yusufaytas.com/the-invariant-is-hiding
2•yusufaytas•2m ago•0 comments

Auto Publishing with Lerobit: A Comprehensive Guide for Small Businesses

https://www.lerobit.com/blog/unlock-auto-publishing-lerobit-guide
1•akliluart•6m ago•0 comments

Impro is a handbook for running a cult

https://www.seangoedecke.com/impro/
1•swah•7m ago•0 comments

Post-P=NP: The World Reimagined

https://chatgpt.com/s/m_6a6f252612a08191b4081f60a92bceba
2•stagas•8m ago•0 comments

Clipping vs. Substepping in Physics Engines

https://easel.games/blog/2026-clipping-vs-substepping
2•BSTRhino•9m ago•1 comments

Returning to The Sims: 128 errors in a fresh lot

https://blog.backslasher.net/tsaas-saves.html
2•Backslasher•10m ago•0 comments

I made a Promise-aware debounce and throttle library for TypeScript

https://github.com/nyvexis1/temporize
2•slimy74•10m ago•0 comments

Generative AI floods and dilutes the market for books

https://arxiv.org/abs/2607.20349
2•theanonymousone•12m ago•0 comments

Europeans Are About to Find Out How Entrenched AI Is in Their Daily Lives

https://www.wired.com/story/europeans-are-about-to-find-out-how-entrenched-ai-is-in-their-daily-l...
2•joozio•15m ago•0 comments

For sale: early access to Trump's Truth Social posts

https://www.npr.org/2026/08/01/nx-s1-5912219/trump-truth-social-access-insider-trading
3•thm•18m ago•0 comments

What is the downside of coaching that I may not be seeing yet?

2•ikut3hva•19m ago•0 comments

LLM Counter-Defaults

https://counterdefaults.aixdesign.co/
2•bookofjoe•28m ago•0 comments

Damned if you do and damned if you don't: Can NOT using AI amount to negligence?

https://www.judiciary.uk/speech-by-the-master-of-the-rolls-to-the-professional-negligence-bar-ass...
2•MasterScrat•29m ago•0 comments

The Holy Grail of Engine Tech: Aerospike Engines Explained (Martian Chronicles) [video]

https://www.youtube.com/watch?v=C0DDxNcI2BA
2•zeristor•31m ago•0 comments

US Treasury undertakes historic intervention in yen market

https://www.ft.com/content/0f9b2fe7-bde4-4f5f-b49e-93ccb5da9ea8
5•23pointsNorth•31m ago•1 comments

Show HN: Katharos Functional programming and CSP-style concurrency for Python

https://github.com/kamalfarahani/katharos
2•kamalf•33m ago•1 comments

Show HN: CaLLMar – play a text-based adventure game in an LLM chat

https://github.com/lascauje/callmar
2•lascauje•33m ago•0 comments

I scraped the r/unixporn and made it filterable by distro, WM, and colorscheme

https://dotfiles.lol/
6•kewonit•36m ago•2 comments

Build a Dependency Injection Container in Vanilla JavaScript

https://jsdev.space/di-container-javascript/
2•javatuts•38m ago•0 comments

The Actor Was the Expensive Part

https://www.minid.net/2026/8/2/the-actor-was-the-expensive-part
2•meerita•38m ago•0 comments

Show HN: Documan – AI Powered Requirement Management Workspace

https://github.com/bbayer/DocuMan
2•bbayer•39m ago•0 comments

What Naur got wrong from The concept of mind

https://tssm.neocities.org/what-naur-got-wrong-from-the-concept-of-mind
2•mpweiher•41m ago•0 comments

Rexpaint – a powerful ASCII art editor

https://www.gridsagegames.com/rexpaint/
2•sph•41m ago•0 comments

Sam Altman is still making the case for parenting via ChatGPT

https://techcrunch.com/2026/08/01/sam-altman-is-still-making-the-case-for-parenting-via-chatgpt/
3•BlueBerry2001•41m ago•0 comments

(Rust) All-Hands 2026 Retrospective

https://blog.rust-lang.org/inside-rust/2026/07/31/all-hands-2026-retrospective/
3•dcminter•44m ago•0 comments

The American E.V. Has Been Crushed. Will It Take the U.S. Auto Industry with It?

https://www.nytimes.com/2026/07/15/magazine/electric-cars-american-evs.html
2•thelastgallon•48m ago•0 comments