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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!

Crowlee AI Survey and instant insights

https://crowdlee.com
1•areffhb•24s ago•0 comments

Reax – A reaction‑first app using Cloud Run to bypass Vercel's body‑size limits

https://www.getreax.com/
1•joeMorr•26s ago•0 comments

15 years after his passing, nobody is 'The Next Steve Jobs'

https://9to5mac.com/2026/10/05/15-years-after-his-passing-nobody-is-the-next-steve-jobs/
1•alwillis•3m ago•0 comments

Grok Voice tops new benchmark

https://veris.ai/leaderboard/vamos-pro
3•jrm-veris•3m ago•0 comments

Using Docker-compose with Podman rootless

https://elou.world/en/tutorial/podman-docker-compose
2•speckx•4m ago•0 comments

Ask HN: Which is the best useful online course you have completed?

1•learner_yearner•4m ago•0 comments

Soy sauce maker Kikkoman opens third U.S. plant

https://www.japantimes.co.jp/business/2026/09/20/companies/kikkoman-opens-third-us-plant/
2•haunter•4m ago•0 comments

Cloudflare – Everything we launched during Birthday Week 2026

https://blog.cloudflare.com/birthday-week-2026-wrap-up/
1•hakkikonu•4m ago•0 comments

My Homelab Two Years Later, Every Upgrade and What It Cost

https://www.joekarlsson.com/blog/homelab-two-years-later/
3•joekarlsson•6m ago•0 comments

Show HN: Agentic Telemetry – Simple Observability Tool for Agentic System

https://github.com/yuyalapis/agentic-telemetry
1•rozenapp•6m ago•0 comments

Show HN: Usermods, an extension that runs an a coding agent to build userscripts

https://github.com/kballenegger/usermods
1•kenneth•8m ago•0 comments

What an AI agent is – a primer

https://aweb.ai/blog/what-an-ai-agent-is-a-primer
1•juanre•8m ago•1 comments

Software Engineering Laws

https://www.manager.dev/newsletter/the-13-software-engineering-laws
2•fagnerbrack•9m ago•0 comments

Florida woman arrested for allegedly making threats in an AI chat

https://www.theverge.com/ai-artificial-intelligence/1004747/florida-woman-arrested-for-allegedly-...
3•timpera•10m ago•2 comments

Borland Turbo Basic

https://dosdays.co.uk/topics/Software/borland_turbo_basic.php
1•sssilver•11m ago•0 comments

Parents upset after CA high school cuts honors classes for 'equity' reasons

https://thenationaldesk.com/news/americas-news-now/parents-upset-after-california-high-school-cut...
6•bilsbie•14m ago•0 comments

Show HN: Recast, an experimental Smalltalk app that repairs itself with an LLM

https://github.com/rot13maxi/recast
1•rot13maxi•14m ago•0 comments

Karl Deisseroth awarded 2026 Nobel Prize in physiology or medicine

https://news.stanford.edu/stories/2026/10/karl-deisseroth-nobel-prize-physiology-medicine
1•djoshea•15m ago•0 comments

People are asking ChatGPT to help them decide how to vote in the midterms

https://www.npr.org/2026/10/05/nx-s1-5977852/ai-chatbots-midterm-election
3•geox•16m ago•0 comments

I built a $5/month TV app because I got tired of how expensive streaming is

https://streamx1.com/Phone.apk
1•streamx295•16m ago•1 comments

Meta Rushed to Fix Muse 'VM Escape' Vulnerability Soon Before Launch

https://www.404media.co/meta-rushed-to-fix-muse-vm-escape-vulnerability-immediately-before-launch/
1•ni5arga•17m ago•0 comments

Smart glasses under scrutiny as Norway seeks temporary ban

https://apnews.com/article/norway-ai-glasses-ban-be20dbd949ce058023864b66219f9c2b
1•harmmonica•18m ago•0 comments

Altman: The world should accept some bad things happening for the benefits of AI

https://www.politico.com/news/2026/10/04/sam-altman-decoded-interview-ai-01106217
21•jamesgill•18m ago•11 comments

Writing Extensions in Sliver C2

https://hackerforce.io/blog/writing-extensions-in-sliver-c2/
1•sunflowerHN•19m ago•0 comments

The Forget() Function: Erasing Data Without Breaking Your Audit Trail

https://medium.com/@MirArshadTalpur/the-forget-function-erasing-data-without-breaking-your-audit-...
1•Arshad-Talpur•21m ago•0 comments

From v0.7 to v0.8: How group commit changed Turso's tail latency

https://turso.tech/blog/turso-group-commit
1•argoeris•21m ago•0 comments

Mining Unwritten Data for AI's Edge

https://www.wsj.com/cio-journal/mining-unwritten-data-for-ais-edge-52681e43
1•goatley•23m ago•0 comments

The Double Headed Stack Allocator

https://blog.demofox.org/2026/10/03/the-double-headed-stack-allocator/
2•ibobev•24m ago•0 comments

Are your AI evals measuring the right things?

https://commandline.microsoft.com/structured-ai-evaluation-design-assert-vs-petri-bloom/
1•lisajaloza•24m ago•0 comments

Cull Lumber at Menards

https://dfarq.homeip.net/cull-lumber-at-menards/
1•ibobev•24m ago•0 comments