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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: Heard Google copied part of our product for IO. Want to show off first

1•echelon•33s ago•0 comments

What gives you the stamina to work on the same product for years?

1•freemh•1m ago•0 comments

An AI announcer mispronounced and skipped names during a graduation

https://www.theverge.com/tech/933653/ai-graduation-commencement-glendale-community-college
2•cdrnsf•1m ago•0 comments

The interface is no Longer the product

https://blog.mozilla.ai/the-interface-is-no-longer-the-product/
1•hawernawer•2m ago•0 comments

Software Development in the AI Age

https://ianmcnaughton.net/blog/software-development-in-the-ai-age/
1•wc_nomad•3m ago•0 comments

AI helps topple decades-old geometry problem

https://www.scientificamerican.com/article/sensational-proof-topples-decades-old-geometry-problem/
1•chc2889•3m ago•1 comments

Apple is no longer purchasing VARTA batteries from Germany

https://old.reddit.com/r/BuyFromEU/comments/1thpbw1/apple_is_no_longer_purchasing_varta_batteries/
1•taubek•4m ago•0 comments

Show HN: hnr – a terminal Hacker News reader vibe-coded in Rust

https://github.com/prasanthj/hnr
1•prasanthj•5m ago•0 comments

KPMG Taps Anthropic to Revamp Global Tax, Advisory Platform

https://www.wsj.com/cfo-journal/kpmg-taps-anthropic-to-revamp-global-tax-advisory-platforms-853093bb
1•petethomas•6m ago•0 comments

Carbon: Autoregressive Genomic Foundation Model

https://huggingface.co/spaces/HuggingFaceBio/carbon-demo
1•kashifr•8m ago•0 comments

RuView – See through walls with WiFi

https://github.com/ruvnet/RuView
3•Iuz•9m ago•0 comments

LSTM-Based Question Answering on News Articles

https://github.com/sparshrestha/NewsQA-LSTM
1•sparshrestha•10m ago•1 comments

We kept getting different "personalities" from the same cloud VM SKU

https://webbynode.com/articles/we-realized-averaging-cloud-benchmark-runs-together-was-corrupting...
1•gsgreen•10m ago•0 comments

Linux Shell Made in Rust

https://github.com/Ghosthx-Code/NaShell
2•Ghosthx-Code•11m ago•0 comments

PHP RFC: Scope Functions a.k.a. Multiline Short Closures

https://wiki.php.net/rfc/scope-functions
1•moebrowne•11m ago•0 comments

Replacing Java's native sort with a Rust JNI engine (38x faster)

https://github.com/fbcouto/java-multimerge-dll/
2•fbcouto•12m ago•0 comments

LLMs can answer multiple choice questions by only seeing the answers

https://arxiv.org/abs/2510.07761
3•rbanffy•13m ago•0 comments

'You can hear me now or pay me later' Music exec tells graduates booing AI

https://www.independent.co.uk/tv/news/ai-students-scott-borchetta-middle-tennessee-state-universi...
4•cdrnsf•14m ago•0 comments

How GLP-1 Development Was Abandoned in 1990 (2024)

https://muse.jhu.edu/verify?url=%2Farticle%2F936213%2Fpdf&r=2074105
2•wslh•14m ago•0 comments

HAMi v2.9.0 Deep Dive: Ascend User-Space Partitioning, DRA Production-Ready

https://dynamia.ai/blog/hami-v29-deep-dive
1•rjzzleep•14m ago•0 comments

Localaik – Run OpenAI and Gemini APIs Locally for CI and Tests

https://github.com/harshaneel/localaik
1•gokhalh•15m ago•0 comments

Hardware Architect Answers Microchip Questions – Wired Tech Support [video]

https://www.youtube.com/watch?v=83F1GSUsmzo
1•thm•16m ago•0 comments

Pintheft Linux LPE

https://www.openwall.com/lists/oss-security/2026/05/19/6
3•gnufx•16m ago•2 comments

Andrej Karpathy Joins Anthropic

https://twitter.com/i/status/2056753169888334312
2•kpw94•16m ago•0 comments

I'm handcrafting a coffee app with love and AI

https://anastasialaczko.substack.com/p/how-im-handcrafting-a-coffee-app
1•papermocha•17m ago•0 comments

I've had it with security orthodoxy. [video]

https://www.youtube.com/watch?v=SbeNRICgzTA
1•pocksuppet•18m ago•0 comments

Understanding, Analyzing, and Optimizing Agentic AI: A CPU-Centric Perspective

https://arxiv.org/abs/2511.00739
1•matt_d•18m ago•0 comments

Ask HN: Does root have to be uid 0? Does uid 0 have to be root?

2•axismundi•18m ago•0 comments

Agentically optimizing LLM prompt cache TTLs for fun and profit

https://blog.firetiger.com/agentically-optimizing-llm-prompt-cache-ttls-for-fun-and-profit/
2•matsur•19m ago•0 comments

Samsung, SK Hynix Employees Abandon Training for Bonuses

https://www.chosun.com/english/national-en/2026/05/20/GTNK6YYGWNG3NP23YDAAI6IXTA/
1•01-_-•19m ago•0 comments