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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•10mo 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!

What Does a Hologram Trademark Signify When the Hologram Isn't There?

https://blog.ericgoldman.org/archives/2026/03/what-does-a-hologram-trademark-signify-when-the-hol...
1•hn_acker•2m ago•1 comments

Microsoft's "Fix" for Windows 11: Flowers After the Beating

https://www.sambent.com/microsofts-plan-to-fix-windows-11-is-gaslighting/
1•speckx•3m ago•0 comments

Migrating Snapchat's AB Pipelines to GPU-Accelerated Spark

https://eng.snap.com/snap-nvidia-gcp
1•Kaedon•3m ago•0 comments

We Built an AI Memory System That Learns

https://getcoherence.io/blog/how-we-built-an-ai-memory-system-that-actually-learns-55bcdf82
1•keithfawcett•4m ago•0 comments

Gen 13: how we built our most powerful server yet

https://blog.cloudflare.com/gen13-config/
1•NicoJuicy•4m ago•0 comments

ChatGPT and the Meaning of Life: Guest Post by Harvey Lederman

https://scottaaronson.blog/?p=9030
1•gwintrob•7m ago•0 comments

Free Multilingual Dictionaries

https://yap.town/d/
1•ChadNauseam•8m ago•1 comments

Ancient machine gun was used by Romans to attack Pompeii

https://www.telegraph.co.uk/world-news/2026/03/22/ancient-machine-gun-was-used-by-romans-to-attac...
1•Stratoscope•8m ago•0 comments

A Ramsey-Style Problem on Hypergraphs

https://epoch.ai/frontiermath/open-problems/ramsey-hypergraphs
1•yusufozkan•9m ago•0 comments

Canvas Unrolls AI Teaching Agent

https://www.insidehighered.com/news/tech-innovation/artificial-intelligence/2026/03/23/canvas-unr...
1•speckx•9m ago•0 comments

The Magnet Suspension Skateboard

https://www.youtube.com/watch?v=yzXZ7cZXifo
1•mhb•10m ago•0 comments

macOS app to copy LaTeX renders/text/QR codes from screenshot automatically

https://github.com/Blobosle/screen-copy/
1•blobosle•11m ago•0 comments

Show HN: Zoom Auto-Joiner

https://github.com/PiotrMackowski/auto-joiner
1•ptrmc•13m ago•1 comments

Neo Store: The modern and feature-rich F-Droid client for everyone

https://github.com/NeoApplications/Neo-Store
1•pretext•15m ago•0 comments

Simply looking up inspires scientific exploration

https://bigthink.com/starts-with-a-bang/why-we-look-up/
1•Brajeshwar•17m ago•0 comments

XMind MCP Server – Incremental mind map editing for LLMs

https://github.com/sc0tfree/xmind-mcp
1•sc0tfree•19m ago•1 comments

Intel Core Ultra 200S Plus Content Creation Review

https://www.pugetsystems.com/labs/articles/intel-core-ultra-200s-plus-content-creation-review/
1•zdw•19m ago•0 comments

Philips to drop Google TV for European-based Titan OS

https://9to5google.com/2026/03/23/google-tv-just-lost-a-big-tv-brand-to-web-app-based-titan-os/
4•pentagrama•20m ago•3 comments

Unix philosophy is dead Long live something else?

https://sdomi.pl/weblog/27-manifesto-of-a-burnt-out-hacker/
1•caminanteblanco•21m ago•0 comments

A single Keycloak commit broke our p99 latency

https://old.reddit.com/r/KeyCloak/comments/1rto63s/how_a_single_keycloak_commit_broke_our_p99/
1•mooreds•23m ago•0 comments

10MB Go Alternative to OpenClaw (Full Clawhub Skills)

https://github.com/General-Specialist/capabot
2•gen_specialist•24m ago•1 comments

Ten Months with Copilot Coding Agent in Dotnet/Runtime

https://devblogs.microsoft.com/dotnet/ten-months-with-cca-in-dotnet-runtime/
2•pestkranker•25m ago•0 comments

Startup left production AWS keys public for 5 months; their VDP was silent

https://benzimmermann.dev/blog/pump-vdp-silence
2•Terretta•25m ago•2 comments

The Picture They Paint of You – AI SREs

https://ferd.ca/the-picture-they-paint-of-you.html
1•sylvainkalache•25m ago•0 comments

"Will AI force code to evolve or make it extinct?"

https://thenewstack.io/ai-programming-languages-future/
1•MilnerRoute•27m ago•1 comments

Value creation in the metaverse (2022) [pdf]

https://www.mckinsey.com/~/media/mckinsey/business%20functions/marketing%20and%20sales/our%20insi...
1•toomuchtodo•27m ago•1 comments

Pancakes, Hot Takes, and Social Media's Flatness

https://tedium.co/2026/03/23/social-media-flat-discussion/
2•freediver•28m ago•0 comments

The OpenBSD init system and boot process

https://overeducated-redneck.net/blurgh/openbsd-init-system.html#content
1•speckx•29m ago•0 comments

Fastest general-purpose sorting library for JavaScript – 95.2% win rate vs. NPM

https://github.com/AyoobAI/ayoob-sort
1•Husain-Ayoob-I•29m ago•4 comments

Biosynthesis of Cinchona Alkaloids

https://www.nature.com/articles/s41586-026-10227-x
1•bookofjoe•30m ago•0 comments