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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•10mo 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!

Daily multivitamin may slow biological aging

https://news.harvard.edu/gazette/story/2026/03/daily-multivitamin-may-slow-biological-aging/
1•XzetaU8•7m ago•0 comments

Shift-left or shift-right? Fresh rolling aggregations for real-time AI

https://www.hopsworks.ai/post/rolling-aggregations-for-real-time-ai
1•LexSiga•16m ago•0 comments

Sloc Cloc and Code – Locomo (LLM Output Cost MOdel)

https://boyter.org/posts/sloc-cloc-code-locomo-llm-output-cost-model/
1•boyter•19m ago•0 comments

AI agents now help attackers, including North Korea, manage their drudge work

https://www.theregister.com/2026/03/08/deploy_and_manage_attack_infrastructure/
1•donutshop•21m ago•0 comments

Baochip-1x: A Mostly-Open, 22nm SoC for High Assurance Applications

https://www.bunniestudios.com/blog/2026/baochip-1x-a-mostly-open-22nm-soc-for-high-assurance-appl...
2•sohkamyung•27m ago•0 comments

LangWatch: OpenTelemetry-Native LLM Observability Without the Vendor Lock-In

https://starlog.is/articles/data-knowledge/langwatch-langwatch/
1•theoradical•41m ago•0 comments

Bloom's Taxonomy

https://en.wikipedia.org/wiki/Bloom%27s_taxonomy
2•downboots•42m ago•0 comments

Claude Code, Claude Cowork and Codex #5

https://thezvi.wordpress.com/2026/03/09/claude-code-claude-cowork-and-codex-5/
2•swolpers•44m ago•0 comments

Why is GPT-5.4 obsessed with Goblins?

3•pants2•46m ago•1 comments

US FAA issues ground stop for all JetBlue planes

https://www.reuters.com/world/us/us-faa-issues-ground-stop-all-jetblue-planes-2026-03-10/
6•jaboutboul•47m ago•0 comments

Amazon holds engineering meeting following AI-related outages

https://www.ft.com/content/7cab4ec7-4712-4137-b602-119a44f771de
6•petethomas•49m ago•0 comments

Government panel to compile groundwater report, includes users' nationalities

https://www.japantimes.co.jp/news/2026/03/10/japan/politics/goundwater-land-ministry/
3•mikhael•50m ago•0 comments

Show HN: I Was Here – Draw on street view, others can find your drawings

https://washere.live
4•mrktsm__•53m ago•0 comments

Prevent duplicate webhook executions in n8n (template)

https://github.com/aari-ai/n8n-webhook-idempotency
1•neshkito•58m ago•1 comments

United States Leads Dismantlement of One of the Largest Hacker Forums

https://www.justice.gov/opa/pr/united-states-leads-dismantlement-one-worlds-largest-hacker-forums
6•mikhael•58m ago•0 comments

Show HN: LLM Sycophancy Benchmark: Opposite-Narrator Contradictions

https://github.com/lechmazur/sycophancy
3•zone411•1h ago•0 comments

Windows: Microsoft broke the only thing that mattered

https://www.yankodesign.com/2026/03/08/microsoft-broke-the-only-thing-that-actually-mattered/
34•kjellsbells•1h ago•12 comments

Language Birth

https://asteriskmag.com/issues/13/language-birth
4•mitchbob•1h ago•1 comments

Show HN: Consul – AI Executive Assistant

https://consul.so
1•goldkey•1h ago•0 comments

Show HN: Mach9 Poker Beta

https://mach9poker.com/beta/
1•ChicagoDave•1h ago•0 comments

Battery Test [video]

https://www.youtube.com/watch?v=RGGHyY2mN7o
1•fenced_load•1h ago•0 comments

Times New Roman drawn from memory (1 hour timelapse)

https://old.reddit.com/r/typography/comments/1rodacl/times_new_roman_drawn_from_memory_1_hour_tim...
1•johnnyApplePRNG•1h ago•0 comments

Build your OpenClaw superstack under a minute

https://better-openclaw.dev
1•diopisemou•1h ago•1 comments

Why the US Could Blame AI for Blowing Up the Iranian School

https://www.jonathanbennion.info/p/why-the-us-may-blame-ai-for-blowing
1•rooftopzen•1h ago•2 comments

Do developers have agency? A study of 66k GitHub projects (7.3TB)

https://link.springer.com/article/10.1007/s44427-025-00019-y
1•ekrisza•1h ago•1 comments

Appsflyer SDK Hijacked

https://websdk.appsflyer.com/
7•jackyzhao•1h ago•2 comments

Annotating for Agents

https://benji.org/annotating
1•parksb•1h ago•0 comments

How curl Started [video]

https://www.youtube.com/watch?v=ohzzGy5K9Dk
1•serialport•1h ago•1 comments

Show HN: Claude Code Token Elo

https://www.clauderank.com
2•ymaws•1h ago•1 comments

Pwning NetBSD-Aarch64 (ARM)

https://www.feyrer.de/NetBSD/bx/blosxom.cgi/nb_20260308_1932.html
1•jaypatelani•1h ago•0 comments