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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!

Bill Gates AI on AI (one month later)

1•vbutsomesayw•41s ago•0 comments

Lambyland.net

https://lambyland.net/
1•Trung0246•3m ago•0 comments

The just-say-no engineer was a ZIRP phenomenon

https://www.seangoedecke.com/the-just-say-no-engineer-was-a-zirp-phenomenon/
1•jxmorris12•5m ago•0 comments

Wpm with open source stenography keyboard

https://github.com/pizzalover125/sten0/
1•pizzalover12512•5m ago•0 comments

DeepSWE blows up the AI coding leaderboard, crowns GPT-5.5

https://venturebeat.com/technology/deepswe-blows-up-the-ai-coding-leaderboard-crowns-gpt-5-5-and-...
2•ripvanwinkle•10m ago•0 comments

Run Llama.cpp on a Mac Pro 6,1 with Dual FirePro D700 GPUs on Ubuntu

https://matthewgribben.com/blog/mac-pro-6-1-llama-cpp-firepro-d700-vulkan-ubuntu
1•coloneltcb•16m ago•0 comments

The AI Decoupling

https://vintagedata.org/blog/posts/the-ai-decoupling
2•jxmorris12•17m ago•0 comments

'Catnomics': how Japan's feline fixation has become an industry worth billions

https://www.theguardian.com/world/2026/may/27/japan-obsessed-wth-cats-popular-pet-industry-worth-...
2•n1b0m•17m ago•0 comments

Why Does Your AI Agent Work Better for You Than for Me?

https://vexjoy.com/posts/why-your-ai-agent-works-better-for-you/
1•AndyNemmity•17m ago•0 comments

Credit card skimmer disguised as Google Tag Manager

https://anchor.host/so-you-get-hit-with-a-credit-card-skimmer-what-now/
1•logickkk1•17m ago•0 comments

I shipped a real product for $29.63 with five AI agents

https://github.com/vggg/agent-project-bootstrap
3•vggg•24m ago•0 comments

FML-Bench: A Controlled Study of AI Research Agent Strategies

https://arxiv.org/abs/2605.17373
1•matt_d•24m ago•0 comments

Crossing the Proof of Concept Valley

https://deploy95.substack.com/p/crossing-the-poc-valley
1•dddddaviddddd•26m ago•0 comments

When Quiet Undersea Volcanoes Turn Disruptive

https://www.quantamagazine.org/when-quiet-undersea-volcanoes-turn-disruptive-20260526/
1•anujbans•27m ago•0 comments

OpenRouter $113M Series C

https://www.nytimes.com/2026/05/26/business/dealbook/openrouter-ai-models-fundraising.html
1•swyx•30m ago•1 comments

I added achievements to my portfolio site

https://charlie.dudzik.me
1•cd-4•35m ago•0 comments

Power bills more than 250 per cent higher near data centres

https://www.theglobeandmail.com/investing/investment-ideas/article-market-factors-power-bills-mor...
3•cdrnsf•36m ago•0 comments

1.96.0 pre-release testing – Inside Rust Blog

https://blog.rust-lang.org/inside-rust/2026/05/26/1.96.0-prerelease/
1•kazu11max17•39m ago•0 comments

You Can't Stop This Data Center, a Mom Was Told. She Won't Quit

https://www.nytimes.com/2026/05/26/us/data-centers-kassi-solberg.html
3•1vuio0pswjnm7•42m ago•0 comments

Skills Folder Is a Junk Drawer

https://james-pritchard.com/blog/skills-junk-drawer
2•ArcaneMoose•45m ago•0 comments

Ambsheets: Spreadsheets for Exploring Scenarios

https://www.inkandswitch.com/ambsheets/notebook/
1•antran22•47m ago•0 comments

Micro-Expert-Router: Running Mixtral-Class Moe Models on NVMe SSDs Without a GPU

https://github.com/randyap8-wq/Micro-Expert-Router-SSD-Streamed-MoE-MER
1•randyap8•47m ago•0 comments

OpenAI's Altman says AI unlikely to lead to 'jobs apocalypse'

https://www.reuters.com/world/asia-pacific/openais-altman-says-ai-unlikely-lead-jobs-apocalypse-2...
4•1vuio0pswjnm7•48m ago•0 comments

Finding deadlocks in CuTe kernels with SPIN

https://metaworld.me/blog/public/Statically-finding-races-in-CUTE-kernels-or-Proving-absences-of-...
2•matt_d•50m ago•0 comments

A Case for Tracing Based DSL Kernel Languages

https://metaworld.me/blog/public/A-Case-for-Tracing-Based-DSL-Kernel-Languages
2•matt_d•51m ago•0 comments

Billionaire Mark Cuban says bye-bye Bitcoin: Why he is 'disappointed' by crypto

https://fortune.com/2026/05/26/mark-cuban-bitcoin-disappointed-crypto/
4•1vuio0pswjnm7•57m ago•0 comments

Google's Angle Merges Wayland Support, Unblocking Chromium Embedded Framework

https://www.phoronix.com/news/ANGLE-Merges-Wayland
4•DefineOutside•58m ago•0 comments

We reduced RAG retrieval cost 10× with a hippocampus-inspired memory substrate

https://www.bricbybric.ae/blog/hippocampus-memory-engine
4•aneesalsajir•59m ago•0 comments

The Codex Showcase

https://www.augmentedswe.com/p/openai-shows-you-how-to-use-codex
4•wordsaboutcode•1h ago•0 comments

Arias: Human Proof for FOSS Contributions

https://lwn.net/Articles/1074534/
2•prakashqwerty•1h ago•0 comments