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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!

Nvidia introduces back end for CUDA kernels in Rust

https://github.com/NVlabs/cuda-oxide
1•ketchup32613•10m ago•0 comments

Ask Hacker News: AI music with feedback

1•alpple•12m ago•0 comments

vLLM Routing and KV

https://avkcode.github.io/blog/how-vllm-works.html
1•gmays•21m ago•0 comments

A Mental Model for Agentic Work

https://basti.io/blog/agentic_work_mental_model/
1•vinhnx•22m ago•0 comments

Non-invasive profiling of the tumour microenvironment with spatial ecotypes

https://www.nature.com/articles/s41586-026-10452-4
2•bookofjoe•25m ago•0 comments

VGC: A Zone-Based Garbage Collection Architecture for Python's Parallel Runtime

https://arxiv.org/abs/2512.23768
2•teleforce•28m ago•0 comments

Tell HN: "Epstein files" is getting buried by deliberate suppresion-propaganda

6•notepad0x90•28m ago•1 comments

Open-source AWS evidence collector for SoC 2 audits

https://loxeai.com
1•arjavmehta•29m ago•0 comments

How to Work and Compound with AI

https://eugeneyan.com/writing/working-with-ai/
1•vinhnx•31m ago•0 comments

Open weights are quietly closing up – and that's a problem

https://martinalderson.com/posts/open-weights-are-quietly-closing-up/
1•vinhnx•32m ago•0 comments

He says U.S. troops abused him in Iraq's Abu Ghraib and his life is still ruined

https://www.npr.org/2023/04/11/1167341565/us-iraq-war-abu-ghraib-survivor
2•Cider9986•36m ago•0 comments

AI's Circular Psychosis

https://www.wheresyoured.at/premium-ais-circular-psychosis/
2•greedo•39m ago•0 comments

AI Hard Drive Shortage Making It More Expensive, Harder to Archive the Internet

https://www.404media.co/the-ai-hard-drive-shortage-is-making-it-more-expensive-and-harder-to-arch...
2•pabs3•40m ago•1 comments

Chamath Palihapitiya: What I Learned from Being Around the Top.01%

https://www.youtube.com/watch?v=RWqB9eAKMx0
1•Brysonbw•49m ago•0 comments

I built GitHub Store to 12,500 stars in 6 months – I started at 16

https://github-store.org/blog/how-i-built-github-store/
4•rainxchzed•55m ago•2 comments

I built a baremetal RustOS (O(1)allocator NVMeDMA ZeroTrust sandbox for AIAgents

https://github.com/joreag/polymorph_os
1•joreag•56m ago•0 comments

Software Sustainability Maturity Model (2013)

http://oss-watch.ac.uk/resources/ssmm
1•pabs3•56m ago•0 comments

Gemini went down with 1099 error

https://support.google.com/gemini/thread/431758595/1099-error?hl=en
1•nsoonhui•1h ago•0 comments

The Explorer Board a $99 Artix UltraScale+ FPGA Board from Adiuvo

https://explorerboard.tech/
2•signalhound•1h ago•0 comments

Remembering Planet Source Code: Sharing Code Before GitHub Made It Easy

https://www.pietschsoft.com/post/2026/05/05/remembering-planet-source-code-sharing-code-before-gi...
1•pabs3•1h ago•0 comments

Figure new humanoid robot demoing Bedroom Tidy

https://www.youtube.com/watch?v=8xEuFQz4E4A
1•zkjiang•1h ago•0 comments

Show HN: Nexa-gauge – Cache/cost-aware graph-based eval for LLM and RAG

https://github.com/harnexa/nexa-gauge
3•Sardhendu•1h ago•0 comments

Venom and Hot Peppers Offer a Key to Killing Resistant Bacteria

https://www.wired.com/story/mexican-science-transforms-scorpion-venom-and-habanero-chile-into-ant...
2•littlexsparkee•1h ago•1 comments

People Hate AI Art

https://mccue.dev/pages/5-8-26-ai-art
4•3dedb728-3f77•1h ago•0 comments

Accelerator Applicant's AI System Makes Faux Pau; Critical of Accelerator Model

https://news.novonavis.com/news/intel_080526_2297
1•capagg•1h ago•1 comments

Show HN: Launch and Run Companies on Autopilot

https://lakyus.com/live
1•edonnie•1h ago•1 comments

Claude FM music for thinking and building [video]

https://www.youtube.com/watch?v=AUQKjgKQF7w
2•davidk42•1h ago•0 comments

CVE-2026-7413: Persistent undocumented backdoor access with Yarbo

https://takeonme.org/cves/cve-2026-7413/
2•shakna•1h ago•0 comments

AI Canasta Scoring App

https://canastascore.com/
1•alohaplannerapp•1h ago•0 comments

Playing Around with OpenAI's GPT Realtime Voice API

https://nathancooper.io/blog/2026-05-08-gpt-realtime-audio
2•coop57•1h ago•0 comments