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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!

VictoriaTraces: Tracing, Observability, and OpenTelemetry0

https://rtfm.co.ua/en/victoriatraces-tracing-observability-and-opentelemetry/
1•valyala•34s ago•0 comments

Show HN: Pay-as-you-play game servers from Discord (£2/mo, four games)

https://github.com/jdmcgrath/steam-server-on-demand
1•joebi•1m ago•0 comments

Google Antigravity Built an OS and agent teams

https://antigravity.google/blog/google-antigravity-built-an-os
1•oscarfr•3m ago•0 comments

Shipped Ask AI in Aura++ in all project's page

https://auraplusplus.com
1•praneetbrar•4m ago•1 comments

Not All Software Systems Are Agent Friendly

https://yassi.dev/posts/not_all_software_systems_are_agent_friendly/
2•yassi_dev•5m ago•1 comments

College students drown out AI-praising commencement speeches with boos

https://www.tomshardware.com/tech-industry/artificial-intelligence/college-students-drown-out-ai-...
2•iancmceachern•5m ago•0 comments

I built a tool that shows which parts might break your supply chain

https://partfinder.dev/
2•jeffreyporterpf•5m ago•1 comments

Microsoft is quietly shopping for an OpenAI replacement

https://thenextweb.com/news/microsoft-startup-deals-life-after-openai
1•gmays•7m ago•0 comments

Fail-closed AI audit for a plugin registry (Workers AI and D1)

https://emdashcms.org/
1•chrisjohnleah•8m ago•0 comments

Let Copilot handle your local Azure setup via MCP

https://topaz.thecloudtheory.com/blog/topaz-mcp-github-copilot/
1•kamilmrzyglod•10m ago•0 comments

The impossible maths of the AI boom

https://www.ft.com/content/32bf8935-8d21-4689-ae34-8b4d3d5f6d93
2•disgruntledphd2•12m ago•1 comments

Google Search Is Becoming an AI Agent

https://surfacedby.com/blog/google-search-is-becoming-an-ai-agent
1•startages•15m ago•0 comments

EU Cloud Provider News Roundup (Feb–May 2026)

https://www.eucloudcost.com/blog/eu-cloud-news-feb-may-2026/
1•mixxor•15m ago•1 comments

We replaced Redis with MySQL for inventory reservations – and it scaled

https://shopify.engineering/scaling-inventory-reservations
1•mlenol•19m ago•0 comments

Pythagorean Addition in the Head

https://entropicthoughts.com/pythagorean-addition
1•crescit_eundo•21m ago•0 comments

Rust Database from Scratch

https://github.com/ayoubnabil/aiondb
1•ayoubnabil•24m ago•0 comments

Show HN: Proposalkit.io – you write the content, we control the design

https://proposalkit.io/
1•silvertaza•26m ago•0 comments

Scented Entanglements (2023)

https://boasblogs.org/undoingraceandracism/scented-entanglements/
1•robtherobber•30m ago•0 comments

The slow creep of epistemic apocalypse

https://haversine.substack.com/p/the-slow-creep-of-epistemic-apocalypse
2•gpvos•30m ago•0 comments

Google's Next AI Push Is About Agents, Not Chatbots

https://firethering.com/gemini-3-5-flash-ai-agents-google-io/
1•steveharing1•31m ago•0 comments

Australia installs 400k home batteries in 10 months for 11.2 GWh

https://www.pv-magazine.com/2026/05/19/australia-installs-400000-home-batteries-in-10-months-for-...
1•xbmcuser•31m ago•0 comments

Git Tools – Rerere

https://git-scm.com/book/en/v2/Git-Tools-Rerere
2•trymas•32m ago•0 comments

Helsing and OHB form KIRK joint venture for European space reconnaissance system

https://defence-industry.eu/helsing-and-ohb-form-kirk-joint-venture-for-european-tactical-space-b...
1•vrganj•32m ago•0 comments

Ask HN: Why am I not able to add a comment on the "Who is Hiring" thread?

1•arnavpraneet•33m ago•2 comments

SAP Invests in AI Automation Startup N8n at $5.2B Value

https://www.bloomberg.com/news/articles/2026-05-12/sap-invests-in-ai-automation-startup-n8n-at-5-...
1•doppp•34m ago•0 comments

Why multi-agent AI breaks in prod and how Yugabyte's Meko is trying to fix it

https://tessl.io/blog/why-multi-agent-ai-breaks-in-production-and-how-yugabytes-meko-is-trying-to...
1•3littlefish•36m ago•0 comments

AI Assistance Reduces Persistence and Hurts Independent Performance

https://www.researchgate.net/publication/403562106_AI_Assistance_Reduces_Persistence_and_Hurts_In...
1•ColinWright•36m ago•0 comments

AI companies' DNS: 17 Anthropic-verified, 23% have spoofable email

https://domainintel.vercel.app/research
1•johnleslie_pm•37m ago•0 comments

C++26: More Function Wrappers

https://www.sandordargo.com/blog/2026/05/20/cpp26-copyable-function
1•ibobev•39m ago•0 comments

Navigation Systems in Video Games

https://pikuma.com/blog/navigation-systems-in-video-games
1•ibobev•40m ago•0 comments