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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!

Show HN

https://github.com/alamops/agetor
1•drakochack•30s ago•0 comments

Do LLMs hold the opinions they give you?

https://twitter.com/pandya_marut/status/2056151597642838487
1•mwiki•8m ago•0 comments

Does Wellington have the most beautiful commute in the world?

https://www.rnz.co.nz/news/regions_wellington/595529/cyclists-commute-at-sunrise-on-the-beautiful...
1•colinprince•10m ago•0 comments

Do less so you can do better (2020)

https://www.indiehackers.com/post/do-less-so-you-can-do-it-better-3ea77e92b4
1•chr15m•13m ago•0 comments

WriteUp: 16 Bytes of x86 that turn Matrix rain into sound

https://hellmood.111mb.de//wake_up_16b_writeup.html
1•HellMood•15m ago•0 comments

Scientists have invented a way to erase bad memories. But should we?

https://www.sciencefocus.com/future-technology/erase-painful-memories
2•amichail•23m ago•1 comments

Rust Async and the Arm Generic Timer

https://thejpster.org.uk/blog/blog-2026-05-17/
1•hasheddan•23m ago•0 comments

Dealing with a Fake a World

1•morpheos137•24m ago•0 comments

Design posters showcasing your country's electrical grid

https://github.com/open-energy-transition/grid2poster
2•lyoncy•38m ago•0 comments

100% Vibe Code

https://humansvsai.io
1•creatorcuffee•39m ago•0 comments

Why ML is a metaphor for life

https://adeshpande3.github.io/Why-Machine-Learning-is-a-Metaphor-For-Life
2•_josh_meyer_•42m ago•0 comments

Finding the Time on AArch32

https://thejpster.org.uk/blog/blog-2026-05-16/
1•hasheddan•42m ago•0 comments

Meta AI Incognito Mode Chats

https://about.fb.com/news/2026/05/incognito-chat-whatsapp-meta-ai/
1•hdjY28•42m ago•0 comments

Financial Services Hackathon for Autism

https://fsi-hack4autism.github.io
1•hbcondo714•45m ago•0 comments

I reduced my OpenClaw token usage by 10x

https://brtkwr.com/posts/2026-05-17-reducing-openclaw-token-usage/
1•brtkwr•48m ago•0 comments

I want to talk population panic and understanding demography

https://bsky.app/profile/karenguzzo.bsky.social/post/3lor4lsga4c2c
2•doener•57m ago•0 comments

EPI – forensic evidence containers for AI agentSCITT-compatible, EU AI Act-ready

https://github.com/mohdibrahimaiml/epi-recorder
1•afridi_epilabs•57m ago•0 comments

Dealing with Incomplete Copyleft Source That Doesn't Correspond

https://sfconservancy.org/blog/2026/may/17/incomplete-corresponding-source-code-copyleft-agpl/
2•jacquesm•58m ago•0 comments

ElliQ is a surprisingly helpful companion robot for older adults

https://www.theverge.com/gadgets/928806/elliq-intuition-robotics-hands-on
1•sohkamyung•1h ago•0 comments

Just make your own usage brake for Cloudflare

https://github.com/eap5662/serverless-sentinel
1•es0teric5662•1h ago•1 comments

Court grants Musk's bid to add Craig Federighi to Apple/OpenAI lawsuit

https://9to5mac.com/2026/05/15/court-grants-musks-bid-to-add-craig-federighi-to-apple-openai-laws...
4•hdjY28•1h ago•1 comments

Fabricked: Misconfiguring Infinity Fabric to Break AMD SEV-SNP

https://xca-attacks.github.io/fabricked/
8•negura•1h ago•1 comments

So you want to deploy FN-DSA

https://keymaterial.net/2026/05/13/so-you-want-to-deploy-fn-dsa/
1•contact9879•1h ago•0 comments

Grounding AI shopping agents using personas learned from raw clickstream data

https://arxiv.org/abs/2605.14205
1•memoriesdotzip•1h ago•0 comments

The Law of Leaky Abstractions (2002)

https://www.joelonsoftware.com/2002/11/11/the-law-of-leaky-abstractions/
1•oldmanrahul•1h ago•0 comments

Anthropic's $1.5B Settlement with Publishers

https://abhishek-shankar.com/posts/the-pirated-corpus-was-always-a-balance-sheet-item
1•catstyler•1h ago•0 comments

Prowl: Native macOS codings agent orchestrator

https://tangled.org/onev.cat/Prowl
1•nerdypepper•1h ago•0 comments

LeakyLM: AI Assistants Are Leaking Your Conversations

https://leakylm.github.io/
1•lucasluitjes•1h ago•0 comments

Review: Cultivated Salmon

https://justismills.substack.com/p/review-cultivated-salmon
1•networked•1h ago•0 comments

Shipping my first mobile app with AI

https://blog.foundingengineer.com/p/what-i-learned-building-my-first
2•rpatni•1h ago•0 comments