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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!

Agentic Credit Card MCP

https://robinhood.com/us/en/support/articles/agentic-credit-card/
1•barbacoa•3m ago•0 comments

Pyhn 0.4.0: Hacker News in your terminal

https://github.com/toxinu/pyhn
3•toxinu•7m ago•0 comments

Surge in scams as fraudsters use AI to target people

https://www.bbc.com/news/articles/cwykp9ygxlvo
1•1659447091•8m ago•0 comments

Monitoring LLM Inference with Prometheus and Grafana (vLLM, TGI, Llama.cpp)

https://www.glukhov.org/observability/monitoring-llm-inference-prometheus-grafana/
1•nryoo•12m ago•0 comments

Even More Batteries Included with Emacs

https://karthinks.com/software/even-more-batteries-included-with-emacs/
2•signa11•15m ago•0 comments

The next frontier of innovation is coming back to the physical world

https://productnow.ai/blogs/a-dose-of-hope-for-the-future
1•kadhirvelm•21m ago•0 comments

Smashed Toilet Phone Web Server

https://www.offthebricks.com/articles/smashed-toilet-phone-web-server
2•mircerlancerous•26m ago•0 comments

DBOS Network Sensing: A Web Services Approach to Collaborative Awareness

https://arxiv.org/abs/2509.09898
2•teleforce•27m ago•0 comments

Decouple the Agent: Why Prompts, Tools, and Models Don't Belong in Your Client

https://vivgrid.com/decoupling-prompts-tools-models-from-agent-client
3•fanweixiao•27m ago•0 comments

AI Has Amnesia. Here's Every System Built to Fix It

https://medium.com/@alanayalag/your-ai-has-amnesia-heres-every-system-built-to-fix-it-ad7dee117a75
2•AlanAAG•29m ago•0 comments

Ask HN: How do you design CLIs for agents?

2•vokneruk•34m ago•0 comments

Lsp85 – an lsp for the Intel 8085 assembly

2•irhs•35m ago•0 comments

Show HN: Go-To-Market for Engineers article series

https://supramono.com/blog/go-to-market-for-engineers-distribution-is-the-product/
3•supramono•43m ago•0 comments

Netlify Drop

https://app.netlify.com/drop
2•skogstokig•43m ago•0 comments

Tech's Next IPO Wave Promises a Charitable Windfall

https://www.wsj.com/finance/investing/techs-next-ipo-wave-promises-a-charitable-windfall-885a1e74
3•builtbystef•54m ago•0 comments

iOS 27's Reworked Stub Islands

https://codecolor.ist/posts/2026-06-15-ios27-reworked-stub-islands/
3•gok•55m ago•0 comments

Argentina Wants to Let AI Own Companies. Here's What That Means

https://www.forbes.com/sites/anishasircar/2026/06/10/ai-owned-companies-argentina/
3•pseudolus•56m ago•1 comments

CoCoMS (Construction Correspondence Management System)

2•cmina•58m ago•0 comments

Sync – Quality Control and Project Management System for AI Agents

https://sync.buzz
2•nikolai_evseev•59m ago•0 comments

Polis – the #1 tool for AI agent coordination

https://polis-protocol.vercel.app/#
2•lucius_gc•1h ago•0 comments

Why You Need to Become a Neuro-Punk Right Now

https://medium.com/@artem-x/why-you-need-to-become-a-neuro-punk-right-now-f266223ac440
2•theorchid•1h ago•0 comments

US and Iran reach cease fire agreement

https://www.nytimes.com/live/2026/06/14/world/iran-war-trump-us
4•koolba•1h ago•0 comments

Molecular Diversity as a Biosignature

https://www.nature.com/articles/s41550-026-02864-z
2•wslh•1h ago•0 comments

Kevin Warsh Wants the Fed to Stop Explaining Everything

https://www.wsj.com/economy/central-banking/fed-warsh-chair-communication-d2f2d226
3•Cider9986•1h ago•1 comments

BEAVER: Enterprise benchmark for LLM Text-to-SQL from private data warehouses

https://beaverbench.github.io/
2•teleforce•1h ago•0 comments

Show HN: Astro Sidey – A simple, minimalistic personal blog theme

https://github.com/odhyp/astro-sidey
2•odhy•1h ago•0 comments

Your Database Is the Bottleneck. Not Your Code

https://howtocenterdiv.com/beyond-the-div/your-database-is-the-bottleneck-not-your-code
2•mooreds•1h ago•0 comments

On, Good Advice Delivered Poorly

https://makc.co/essays/good-advice-delivered-poorly/
2•makc•1h ago•0 comments

Under the River

https://shopify.engineering/under-the-river
2•mooreds•1h ago•0 comments

The More Confident in AI Security, the More Likely Breached, Study Finds

https://www.itsecurityguru.org/2026/06/11/the-more-confident-organizations-are-in-their-ai-securi...
4•mooreds•1h ago•0 comments