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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!

WA is losing more from Canada than shoppers

https://www.seattletimes.com/opinion/wa-is-losing-more-from-canada-than-shoppers/
1•ClearwayLaw•3m ago•1 comments

Ask HN: Who still uses EXO Labs?

1•thesnarkitecht•5m ago•0 comments

Ask HN: Are Tenstorrent cards better than Nvidia?

2•thesnarkitecht•8m ago•0 comments

U.S. Strikes Iran's Qeshm Island as Trump Talks Down War Risks

https://www.wsj.com/world/middle-east/u-s-strikes-irans-qeshm-island-as-trump-talks-down-war-risk...
6•Foxhuls•11m ago•0 comments

Goldman restricts traders and bankers from using some AI tools

https://www.moneycontrol.com/europe/?url=https://www.moneycontrol.com/news/business/goldman-restr...
2•vismit2000•12m ago•0 comments

Flight Explainer: Live charts of your Python pipelines

https://motherduck.com/blog/flight-explainer/
1•jonbaer•12m ago•0 comments

Cops bust botnet of 1.3M infected Android TV boxes

https://www.theregister.com/cyber-crime/2026/11/02/cops-bust-botnet-of-13m-infected-android-tv-bo...
3•entryleveljobsc•12m ago•0 comments

Inside Musk's plan to upend the wireless phone industry

https://www.washingtonpost.com/technology/2026/11/02/inside-elon-musks-plan-upend-wireless-phone-...
2•bookofjoe•14m ago•1 comments

Show HN: Project Wisteria-A BYOK chatbot that saves thoughts and memory locally

https://negativeabsence.com/wisteria/
1•NegativeAbsence•14m ago•1 comments

Quitting jobs: The two-week notice is dying. Maybe it should

https://slate.com/life/2026/11/jobs-job-work-quit-two-weeks-notice.html
1•tekdude•16m ago•0 comments

Blades CSS v3.1.0 released – a modern drop‑in successor to Pico CSS

1•anydigital•18m ago•0 comments

Speridlabs/Idol · Hugging Face

https://huggingface.co/speridlabs/idol
2•yukim198•21m ago•0 comments

Dartmouth's provost warned us about AI cheating–but his AI use cost him his job

https://arstechnica.com/tech-policy/2026/10/dartmouths-provost-warned-us-about-ai-cheating-but-hi...
1•poopcat•23m ago•0 comments

Programming Language Research by David Walker

https://dl.acm.org/doi/10.1145/2837614.2843896
1•efren6•27m ago•0 comments

Stolen AI API keys generated nearly $1M in charges for a single company

https://cloud.google.com/blog/topics/threat-intelligence/llmjacking-monetizing-compromised-cloud-...
4•khalidkhair•30m ago•1 comments

Audience Capture

https://www.seangoedecke.com/audience-capture/
1•gfysfm•32m ago•0 comments

Show HN: Flick – A sports scores app without spoilers

https://flick.kawaicheung.io/appstart.html
1•kiwigod17•35m ago•0 comments

What Are the US Midterms

https://www.bbc.com/news/articles/c6wyz223j19po
4•teleforce•35m ago•0 comments

Reading Is Not Steering: Symbol-Readers Concept-Controllers in SAE's

https://github.com/CharacterCraftAI/Gemma-SAE-Research
1•justinhernandez•37m ago•0 comments

Salesforce Signs Definitive Agreement to Acquire Cresta

https://www.salesforce.com/news/stories/salesforce-signs-definitive-agreement-to-acquire-cresta/?...
2•johnbatch•38m ago•0 comments

My reflex of assuming our servers need ever-growing amounts of RAM

https://utcc.utoronto.ca/~cks/space/blog/sysadmin/ServerRAMGrowthReflex
1•birdculture•39m ago•0 comments

From Heroku to Convox, and why we built Rack Gateway

https://docspring.com/blog/posts/from-heroku-to-convox-and-rack-gateway/
1•nathan_f77•42m ago•0 comments

Police Dept. Quits After Finding Out What It Feels Like to Be Tracked

https://www.gadgetreview.com/tables-turned-entire-police-department-quits-after-finding-out-what-...
2•thisislife2•45m ago•1 comments

Show HN: Learn French by Watching Netflix

2•nshelia•47m ago•0 comments

Terralien

https://play.terralien.antari.io/
1•AndrewAnt•48m ago•0 comments

Ask HN: Does anyone have a contact with Cleveland-area Ham club?

6•stockresearcher•53m ago•0 comments

Show HN: Learn to speak French by watching Netflix

https://chromewebstore.google.com/detail/greetai-learn-speak-langu/hhildamloicfginbdnilakddipgkolbf
2•nshelia•53m ago•0 comments

Building a Private Telephone System [video]

https://www.youtube.com/watch?v=C4DY0NzaO14
2•jumpocelot•53m ago•0 comments

Intel stock collapse worsens as $3.5T chip rout spreads

https://finance.yahoo.com/markets/article/the-intel-stock-collapse-is-getting-worse--and-the-37-t...
24•entryleveljobsc•54m ago•8 comments

Dampe RNG has been solved for Ocarina of Time

https://twitter.com/zfg111/status/2116562542218932255
1•linksbro•54m ago•1 comments