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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!

MVP Was a Hack: The boundary moves from product to customer

https://research.oguzbilgic.com/theses/maximum-viable-product?update=11
1•obilgic•1m ago•0 comments

The Power of Sync

https://seths.blog/2026/11/the-power-of-sync-2/
1•herbertl•1m ago•0 comments

Show HN: Calibron 12 Puzzle/Solver

https://dawnofthe.dad/calibron
1•userundefined•1m ago•0 comments

Tempest Prognosticator

https://en.wikipedia.org/wiki/Tempest_prognosticator
1•thunderbong•13m ago•0 comments

Skrongle Mini, a self hosted AI course generator and learning app on R. pi zero

https://github.com/alexbeeken/skrongle-mini
1•skrongle-mini•18m ago•1 comments

Can AI help connect knowledge across 135 academic domains?

https://zenodo.org/records/23686384
1•pinuslongaeva•20m ago•0 comments

A renowned scientist, a deadly snakebite, and a diary that documented it all

https://www.cbsnews.com/chicago/news/field-museum-karl-patterson-schmidt-deadly-snakebite-diary/
1•areoform•20m ago•0 comments

Ask HN: If LLM reverse engineering is deemed illegal, is that precedent for OSS?

1•apatheticonion•22m ago•0 comments

Ask HN: Why does Ant, Open AI even need a datacenter?

1•ksniwmidjd•22m ago•1 comments

MarQ – Project board where AI agents lease tasks over MCP

https://www.marqpm.com/
1•andreuvm•23m ago•0 comments

An AI agent's public attempt to get 5k GitHub stars in a month (it's at 0)

https://rogermas05.github.io/agent-recap/
1•whatmyaithinks•27m ago•0 comments

Ask HN: What are you building that you're excited by

2•mrburton•28m ago•0 comments

Anthropic's falling IPO valuation raises stakes for broader AI trade

https://2tinteractive.com/watch/episodes/5682/
2•LebToki•28m ago•0 comments

Test Pattern History: How Color Bars Became a TV Staple

https://tedium.co/2025/01/19/television-test-patterns-history/
1•andsoitis•40m ago•1 comments

Qwen3.8-27B MTP Q4S head on Q6 quant is faster than q6, f16 slower = acceptance

https://github.com/alainnothere/llama.cpp/commit/77b124a7ab56e0f1c33c025344a9c63465a9a87f
1•xlayn•40m ago•1 comments

The Predator Holiday Special

https://en.wikipedia.org/wiki/The_Predator_Holiday_Special
1•WarOnPrivacy•42m ago•1 comments

Amazon ECR Public Service Quotas – Amazon ECR Public

https://docs.aws.amazon.com/AmazonECR/latest/public/public-service-quotas.html
1•abdelhousni•44m ago•0 comments

Synergy 1.21 has been released

https://symless.com/synergy/download/release-notes/synergy1-personal/v1.21.2
2•speakspokespok•46m ago•0 comments

Model Surgery: Can an AI directly edit and make another AI forget facts?

https://deepgains.substack.com/p/model-surgery-can-an-ai-directly
1•asasidh•46m ago•2 comments

Automation, Algorithms, and Self-Censorship

https://www.baldurbjarnason.com/2026/automation-and-self-censorship/
1•aray07•48m ago•0 comments

Pull Cached Docker Hub Images – Artifact Registry – Google Cloud Documentation

https://docs.cloud.google.com/artifact-registry/docs/pull-cached-dockerhub-images
1•abdelhousni•48m ago•0 comments

Usenet's Back, Baby (this time, the search works)

https://tedium.co/2026/09/14/usenet-rewind-archive-revival-website/
4•andsoitis•49m ago•0 comments

Lossless compression of LLMs to 12-bits

https://github.com/dphnAI/nf12
1•AlpinDale•51m ago•1 comments

Changing one letter bypassed an admin API in HuggingFace

https://twitter.com/v12sec/status/2118442075574464848
3•robindooh•52m ago•0 comments

Typhoon Nolo dissapated, regenerated, hazed Hawaii, transited entire Pacific

https://en.wikipedia.org/wiki/Hurricane_Nolo
1•WarOnPrivacy•52m ago•0 comments

International Castle Research Society

https://burgenkunde.de/index_Willkommen_eng.htm
1•sklargh•52m ago•0 comments

Is YouTube starting to protect channel RSS feeds?

2•kradeelav•55m ago•1 comments

GitHub AI Vulnerability Scans for Repositories

https://docs.github.com/en/code-security/concepts/code-scanning/ai-scan-for-repositories
2•robinstunes•56m ago•0 comments

A database is a store for global variables

https://www.seangoedecke.com/a-database-is-a-store-for-global-variables/
1•gfysfm•1h ago•0 comments

Dual JWT Authentication: Security, Redis, and Trade-Offs

https://www.jstools.space/blog/dual-jwt-authentication/
1•javatuts•1h ago•0 comments