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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!

Geometric Reasoning

https://sophontic.ai/
1•6510•55s ago•1 comments

Winemaking Home Page (2018)

https://web.archive.org/web/20200602092516/http://winemaking.jackkeller.net/index.asp
1•Ariarule•1m ago•0 comments

Ask HN: What is the difference between big criminal org. and a state?

1•kingleopold•6m ago•0 comments

Honey Gets Terminated as Lawsuits Proceed [video]

https://www.youtube.com/watch?v=EXDemfGNGz0
2•nomilk•13m ago•0 comments

Death March (Project Management)

https://en.wikipedia.org/wiki/Death_march_(project_management)
2•Austin_Conlon•22m ago•0 comments

Apache Fory JSON: JSON Serialization for Java, 10x faster than Jackson

https://fory.apache.org/blog/fory_json_fastest_java_json_framework/
1•theanonymousone•24m ago•0 comments

YouTube sets Made For Kids flag on inappropriate video,won't let owner change it

https://twitter.com/nihaho13/status/2087317049278075130
1•Nition•25m ago•1 comments

The poverty of anti-tech thought

https://www.noahpinion.blog/p/the-poverty-of-anti-tech-thought
1•Ariarule•25m ago•0 comments

Show HN: Lethe is a portable identity layer – user consented

https://lethe-ai.vercel.app
1•NamanaManohar•37m ago•0 comments

Mark Zuckerberg: The Future Is for Everyone

https://about.fb.com/news/2026/08/the-future-is-for-everyone/
3•nedruod•41m ago•1 comments

Meta can't stop states' $1.4T lawsuit from going to trial

https://arstechnica.com/tech-policy/2026/08/meta-cant-stop-states-1-4-trillion-lawsuit-from-going...
4•oenton•44m ago•2 comments

World Encyclopaedia of Puppetry Arts

https://wepa.unima.org/en/
2•nephihaha•44m ago•0 comments

Rootless Container Sandbox for Claude Code and Codex

https://www.reddit.com/r/ClaudeAI/comments/1vm2w0e/a_lightweight_rootless_container_sandbox_for/
1•syumei•48m ago•0 comments

CVE-2026-53361 AF_Unix GC vs. MSG_PEEK use-after-free container escape

https://github.com/sgkdev/bad_garbage
3•eyberg•49m ago•0 comments

DoorDash Flux: Delegating Engineering Work to Cloud Based Agents

https://careersatdoordash.com/blog/delegating-engineering-work-to-cloud-based-agents/
1•rayval•49m ago•0 comments

DARPA heavy lift challenge ends with winner at a 3.84:1 payload to weight ratio

https://dronexl.co/2026/08/10/darpa-lift-challenge-results-avidrone/
2•daau•53m ago•0 comments

LSPs for LLMs

https://ianbarber.blog/2026/08/11/lsps-for-llms/
1•matt_d•54m ago•0 comments

Hannah Arendt's American Education

https://www.newyorker.com/magazine/2026/08/17/hannah-arendt-life-of-the-mind-thomas-meyer-book-re...
2•mitchbob•56m ago•1 comments

Supreme Computation – Fail-closed governance for AI execution

https://github.com/KnowledgeeKZA3224/scqos-reference-implementation
1•Knowledgee_KZA•56m ago•0 comments

Trump's childhood vaccine order: what it does and what doctors say

https://www.reuters.com/legal/litigation/trumps-childhood-vaccine-order-what-it-does-what-doctors...
2•gverrilla•57m ago•0 comments

Ask HN: How do you handle uncertain GPU capacity needs months in advance?

1•plainviewinstru•1h ago•0 comments

Spy cameras on Royal Navy drones sent data to China

https://www.telegraph.co.uk/news/2026/08/09/spy-cameras-on-navy-drones-secretly-sent-data-to-china
3•delichon•1h ago•0 comments

Show HN: DisplayWave – open-source and simple tool for Mac display management

https://github.com/kah-ve/DisplayWave
1•warpbin•1h ago•0 comments

Show HN: Memftprt, a consistent, process-tree-wide memory footprint on Linux

https://github.com/menzew/memoryfootprint
1•benzewdu•1h ago•0 comments

Measuring the Wrong Thing: Internal Harmfulness Scores Anti-Rank Successful

https://arxiv.org/abs/2608.09624
1•sbulaev•1h ago•0 comments

I built a PII pdf parser for your agent

https://www.pdfagent.net/
2•mattmerrick•1h ago•1 comments

Male redback spider's dramatic death somersault during sex coded in its DNA

https://www.abc.net.au/news/science/2026-08-12/redback-spiders-backflip-katipo-sex/107022976
4•Gaishan•1h ago•0 comments

Move 37 Is the Moment AI Changes Everything. It's Suddenly Happening Everywhere

https://www.wsj.com/tech/ai/move-37-ai-demis-hassabis-google-deepmind-alphago-ec832a41
4•RyanShook•1h ago•0 comments

Dogs can tell when you're happy, sad or frustrated

https://www.washingtonpost.com/lifestyle/2026/08/11/dogs-can-tell-when-you-happy-scared-or-sad-ne...
5•wslh•1h ago•3 comments

Crew, a multiplayer workspace for humans and AI agents to work together

https://github.com/JamelHammoud/crew
2•alihammoud21•1h ago•0 comments