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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!

Croc v11.3 goes peer-to-peer

https://getcroc.com/blog/croc-v11-3-release-update
1•haunter•7m ago•0 comments

Advice on Upskilling [pdf]

https://www.justinmath.com/files/advice-on-upskilling.pdf
1•miletus•9m ago•0 comments

How to Pretty-Print Your Kubernetes YAML as Kyaml and Why You'd Want To

https://kubernetes.io/blog/2026/08/11/how-to-pretty-print-kubernetes-yaml-as-kyaml/
1•jamietanna•9m ago•0 comments

Habit tracker bullet journal ideas

https://trackthehabit.com/bullet-journal-habit-tracker-layouts/
1•ahmadhussain89•9m ago•0 comments

Conversations Can Shape Reality

https://nautil.us/how-conversations-can-shape-reality-1284420
1•XzetaU8•11m ago•0 comments

SK Hynix Weighs Japan Memory Plant Deal to Supply AI Boom

https://www.bloomberg.com/news/articles/2026-08-31/sk-hynix-weighs-japan-memory-fab-partnership-t...
1•aufklarer•12m ago•0 comments

US and Iran Exchange Attacks for First Time in About a Month

https://www.bloomberg.com/news/articles/2026-08-30/us-strikes-iranian-rocket-launchers-in-first-a...
1•ipotapov•17m ago•0 comments

Trump demands Canadian companies doing business with USA move there immediately

https://www.independent.co.uk/news/world/americas/us-politics/trump-canada-businesses-truth-socia...
4•emptybits•19m ago•1 comments

Setting Up a Kernel Debugging Environment (2021)

https://pwning.systems/posts/setting-up-a-kernel-debugging-environment/
1•vismit2000•20m ago•0 comments

Starting AI Safety Study Group to Do Arena Curriculum

https://www.lesswrong.com/posts/eysGHNdvgAYwZjC3r/starting-ai-safety-study-group-to-do-arena-curr...
1•joozio•20m ago•0 comments

Claude Code reduces it's weekly limit by 17% – compared to today

https://twitter.com/ClaudeDevs/status/2093742322525810912
3•partsch•21m ago•0 comments

Nvidia DLSS 5: Modders enable AI faces in all sorts of games

https://www.heise.de/en/news/Nvidia-DLSS-5-Modders-enable-AI-faces-in-all-sorts-of-games-11434015...
1•doener•25m ago•0 comments

Zenresume

https://www.zenresume.online/
1•jagadees21•28m ago•0 comments

Infinite Slop (24/7 AI video generation)

https://infiniteslop.ai/
1•mdrzn•29m ago•0 comments

Show HN: Albums Vault, my take on how to manage Spotify album library

https://codefloe.com/rabc/albums-vault
1•rabc•30m ago•0 comments

Free Image Upscale

https://imagepeel.com/
1•FrostDream•31m ago•1 comments

Open Source tool to detect software supply chain attacks

https://github.com/ossillate-inc/packj
1•daveP17•36m ago•0 comments

I Didn't Set a Cookie

https://belibre.be/cookies/
5•JeanKage•41m ago•0 comments

Reckless Ben confronted Ideal Living's CEO over trafficking claims

https://thecreatorwire.com/article/reckless-ben-posed-as-doordash-delivery-to-confront-peter-spie...
2•thevinter•45m ago•1 comments

Fifty Shades of Klinker: The Bricks That Shaped Hamburg

https://alsterrunde.com/fifty-shades-of-klinker-the-bricks-that-shaped-hamburg/
1•mertbio•48m ago•0 comments

Show HN: FlarePeek – a chrome extension for Cloudflare Worker developers

https://chromewebstore.google.com/detail/flarepeek-a-browser-exten/ffdbljcgdjkbbbbodnjbbgpahhnkfbnl
1•ioslh•51m ago•0 comments

The Aphantasia Lie [video]

https://www.youtube.com/watch?v=UyBikVRPh6c
2•IdealeZahlen•55m ago•0 comments

In less than a year, Google made scraping 10× harder

https://growtika.com/blog/google-goto-links-study
4•Growtika•1h ago•2 comments

Droptick – one ad slot per week, the price only falls

https://www.droptick.io
1•CarstenSachse•1h ago•1 comments

A 12TB Steam "teraleak" spills more than a decade of lost PC gaming history

https://arstechnica.com/gaming/2026/08/a-12tb-steam-teraleak-spills-more-than-a-decade-of-lost-pc...
26•WithinReason•1h ago•1 comments

How AI Agents Make Discord Support Faster with SeaTicket

3•Daniel-Pan•1h ago•1 comments

One Plugin, One Config, One Starter = All-in-One Kit for 11ty / Build Awesome

https://buildawesome.one/
1•anydigital•1h ago•0 comments

Drug test policy search site

https://dotheydrugtest.com/
1•nullscape•1h ago•0 comments

Infragrid: Turn screen recordings into agent workflows

https://infragrid.ai
1•handfuloflight•1h ago•0 comments

Forbidden planet: was Pluto's 2006 demotion a big mistake?

https://www.theguardian.com/science/2026/aug/31/forbidden-planet-was-plutos-2006-demotion-a-big-m...
1•ziofill•1h ago•0 comments