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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•7mo 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!

Show HN: Brightened Engine – deterministic incremental computation benchmarks

https://thebrokenway.github.io/brightened-benchmarks/
1•thebrokenway•2m ago•0 comments

Linux Sandboxes and Fil-C

https://fil-c.org/seccomp
1•pizlonator•3m ago•0 comments

Crises disrupt long-term increase in stress, negativity, and simplicity in songs

https://www.nature.com/articles/s41598-025-28327-5
1•PaulHoule•3m ago•0 comments

AI Boom Threatens to Suck Resources Away from Road, Bridge Work

https://www.bloomberg.com/news/newsletters/2025-12-12/ai-data-center-boom-may-suck-resources-away...
1•spenvo•4m ago•0 comments

The AI Economics of the Netflix and Warner Bros. Deal

https://medium.com/@gp2030/the-ai-economics-of-the-netflix-warner-bros-deal-bb593a5da26a
2•light_triad•9m ago•0 comments

Why code search at scale is essential when you grow beyond one repository

https://sourcegraph.com/blog/why-code-search-at-scale-is-essential-when-you-grow-beyond-one-repos...
1•handfuloflight•10m ago•0 comments

Spirit of Walt but no Mickey Mouse in Disney's planned desert community

https://www.theguardian.com/us-news/2025/nov/28/disney-community-palm-springs-california
1•PaulHoule•14m ago•0 comments

MCP Writing Code to Call MCP: MCPs All the Way Down

https://rouxbot.com/p/mcp-code-mode
2•rouxbot•16m ago•0 comments

First all-optical XPU processing system

https://www.akhetonics.com/
1•bohnohboh•17m ago•0 comments

UN: World must tackle climate change, pollution, biodiversity and land loss

https://www.pbs.org/newshour/science/un-says-world-must-jointly-tackle-issues-of-climate-change-p...
2•Anon84•17m ago•0 comments

Flat-pack washing machine spins a fairer future

https://www.positive.news/society/flat-pack-washing-machine-spins-a-fairer-future/
3•ohjeez•24m ago•0 comments

My AI Knows Me Better Than Anyone

https://www.asad.pw/my-ai-knows-me-better-than-anyone/
1•ingve•25m ago•0 comments

$1,500 robot cooks dinner while I work

https://www.theverge.com/tech/840599/posha-robot-chef-review
3•sohkamyung•28m ago•0 comments

Get Better at Programming?

2•vaasfps•28m ago•3 comments

Keep a Changelog

https://keepachangelog.com/en/1.1.0/
1•colonCapitalDee•29m ago•0 comments

Venezuela explained in 10 maps and charts

https://www.aljazeera.com/news/2025/11/28/venezuela-explained-in-10-maps-and-charts
1•Anon84•31m ago•0 comments

Circular Dependencies Kill Your Microservices

https://systemdr.substack.com/p/how-circular-dependencies-kill-your
2•birdculture•33m ago•0 comments

Show HN: I made a HumanLayer-clone Claude Code plugin

https://billlyzhaoyh.github.io/hacks/human-layer-clone/
1•yz494•33m ago•0 comments

Show HN: Troql – Auto-generate architecture maps from GitHub repos

https://www.troql.com/
1•Yashkr123•34m ago•0 comments

Samsung to halt SATA SSD production, leaker warns

https://www.notebookcheck.net/Samsung-to-halt-SATA-SSD-production-leaker-warns-of-up-to-18-months...
4•doublepg23•36m ago•0 comments

How to Turn Off AI Tools Like Gemini, Apple Intelligence, Copilot

https://www.consumerreports.org/electronics/artificial-intelligence/turn-off-ai-tools-gemini-appl...
2•ohjeez•37m ago•0 comments

Canada Mobilizes a People's Army

https://charlieangus.substack.com/p/canada-mobilizes-a-peoples-army
2•debo_•37m ago•0 comments

Variability of Technology Learning Rates

https://www.sciencedirect.com/science/article/pii/S2666792425000460
1•JumpCrisscross•39m ago•0 comments

Phytomining

https://en.wikipedia.org/wiki/Phytomining
2•cainxinth•43m ago•0 comments

Circuit Sparsity

https://huggingface.co/openai/circuit-sparsity
1•ray__•46m ago•0 comments

Linux System Calls

https://www.matheusmoreira.com/articles/linux-system-calls
2•enz•46m ago•0 comments

Arizona city rejects data center after AI lobbying push

https://www.politico.com/news/2025/12/12/arizona-city-rejects-data-center-after-ai-lobbying-push-...
6•ohjeez•57m ago•3 comments

From profiling to kernel patch: the journey to an eBPF performance fix

https://rovarma.com/articles/from-profiling-to-kernel-patch-the-journey-to-an-ebpf-performance-fix/
2•todsacerdoti•58m ago•0 comments

Ask HN: Are You Considering Leaving Tech All Together?

3•karakoram•1h ago•6 comments

Compare compensation and rating for different companies when looking for a job

https://compchart.fyi/
1•jacks4jokers•1h ago•0 comments