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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•12mo 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!

Aurora: A Leverage-Aware Optimizer for Rectangular Matrices

https://blog.tilderesearch.com/blog/aurora
1•matt_d•2m ago•0 comments

What is Elon Musk's formula

https://www.economist.com/culture/2026/05/07/what-is-elon-musks-formula
1•andsoitis•7m ago•0 comments

Hantavirus tracker with Pandemic 2's UI

https://hantavirus.xetera.dev/
1•xetera•7m ago•0 comments

Atlas Mehs

https://darthcoder.github.io/2026/05/10/atlas-mehs/
1•basyt•21m ago•1 comments

The Title on Your Badge Is Becoming a Guess

https://priorcontext.substack.com/p/the-title-on-your-badge-is-becoming
2•contextwindow•24m ago•1 comments

Arrow Flight vs. JSON in Next.js: Benchmarking Python and Go

https://kayhan.dev/posts/012-arrow-flight-vs-json-nextjs-snowflake-benchmark/
1•keynha•29m ago•0 comments

The Hidden Reason Screwdriver Handles Look Like This [video]

https://www.youtube.com/watch?v=sGiRSA_GWK8
2•CharlesW•30m ago•0 comments

Global AI Diffusion Q1 2026 Trends and Insights

https://www.microsoft.com/en-us/corporate-responsibility/dmc/topics/ai-economy-institute/reports/...
2•igor_mart•36m ago•1 comments

Grinder12: 0.96-Bit Lossless Streaming KV-Cache (16.55x VRAM Savings

https://github.com/ggml-org/llama.cpp/discussions/22891
3•AMICLLC•43m ago•0 comments

Xs of Y – roguelike that names itself every run. Written in 4kLoC

https://github.com/nooga/xsofy
4•andsoitis•53m ago•0 comments

Gemini API File Search is now multimodal

https://blog.google/innovation-and-ai/technology/developers-tools/expanded-gemini-api-file-search...
17•gmays•1h ago•2 comments

Snyk and Claude Code: real-time security scanning of AI-generated code

https://codebrainery.com/articles/snyk-claude-code-real-time-security-scanning-for-ai-code
4•yogeshbansal•1h ago•0 comments

Dissolving atherosclerotic plaque without surgery

https://www.cureus.com/articles/488870-closed-loop-extracorporeal-vascular-cleaning-by-staged-che...
3•iliatoli•1h ago•0 comments

Show HN: Modafinil - Let agents continue running while MacBook lid is closed

https://github.com/narcotic-sh/modafinil
3•hamza_q_•1h ago•2 comments

"genesis mission (US Government)" (Angela Collier on AI and research) [video]

https://www.youtube.com/watch?v=p6Ejmhwb8Sc
2•eqvinox•1h ago•0 comments

MCP for sandboxed, reproducible envs for agentic-first coding workflows

https://github.com/aniongithub/devcontainer-mcp
3•anionyt•1h ago•0 comments

Flipping the bozo bit on flips the learning off

https://surfingcomplexity.blog/2026/05/09/flipping-the-bozo-bit-on-flips-the-learning-off/
4•eatonphil•1h ago•0 comments

Powering the Inference Era: Inside the DigitalOcean AI-Native Cloud

https://www.digitalocean.com/blog/powering-the-inference-era
2•gmays•1h ago•0 comments

The Laboratory and the Artist

https://clereviewofbooks.com/the-laboratory-and-the-artist/
4•skogstokig•1h ago•0 comments

Memory device breaks high-temperature performance record

https://physicsworld.com/a/memory-device-breaks-high-temperature-performance-record/
4•EA-3167•1h ago•1 comments

How Israel's creation mirrors Greek independence – and why it's overlooked

https://www.jpost.com/opinion/article-895285
6•dima1830•1h ago•2 comments

DOS, Floppies, NetBSD and Nostalgia

https://exquisite.tube/w/dkV6kWiT9sp2y6xVwkH1iF
3•jaypatelani•1h ago•0 comments

Show HN: A Satellite Visualizer

https://github.com/aabiji/kepler
2•aabiji•1h ago•0 comments

Pocket Raspberry Pi Computer for Hackers [Pre-Sale]

https://shop.m5stack.com/pages/m5-cardputerzero
3•daniel_iversen•1h ago•0 comments

Show HN: Fixing AI memory blind spot on connected facts with benchmark

https://yourmemoryai.xyz/
4•SachitRafa•1h ago•0 comments

Plant Seeds Do Something When the Sound of Rain Strikes

https://www.sciencealert.com/plants-can-sense-the-sound-of-rain
2•m463•1h ago•0 comments

Show HN: Building a web server in assembly to give my life (a lack of) meaning

https://github.com/imtomt/ymawky
74•imtomt•1h ago•22 comments

Anthropic weighs deal for near $1T valuation as revenue surges

https://www.ft.com/content/a40cafcc-0fa4-4e70-9e24-90d826aea56d
4•mfiguiere•1h ago•0 comments

Show HN: A Codex/Claude Code plugin for persistent product context thru sessions

https://github.com/idodekerobo/draft-cli-plugin
3•idodekerobo•1h ago•0 comments

Godot Usage and Engine Growth

https://godotengine.org/article/godot-growth-stats-2026/
3•JSLegendDev•1h ago•0 comments