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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!

Centipid ISP Billing OSS/BSS

https://centipidbilling.com
1•fabianmuema•2m ago•0 comments

Jailbreaking the Switch 2

https://pepsipu.com/blog/2026-10-switch2-jailbreak-ns2jb/
1•ledoge•4m ago•0 comments

Barclays cutting 5000 jobs in AI-led efficiency drive

https://news.sky.com/story/barclays-cutting-5-000-jobs-in-ai-led-efficiency-drive-13602151
1•cognoboffin•5m ago•0 comments

Just Dashboard open-source dashboard for managing your VPS

https://just-dashboard.com/
1•Wayy01•6m ago•0 comments

Mach9 raises $34M after pivoting to AI CAD software

https://techcrunch.com/2026/10/21/mach9-raises-34m-after-pivoting-to-ai-cad-software/
2•doppp•10m ago•0 comments

Show HN: SutraKey – A radial menu to download any media and web PDFs on macOS

https://sutrakey.aritro.cloud
1•halcyon-past•11m ago•1 comments

Scientists Accidentally Bred a Hybrid of Two Endangered Fish

https://www.sciencealert.com/scientists-create-a-strange-hybrid-between-two-very-different-kinds-...
2•thunderbong•12m ago•0 comments

Bose buys audio rival Skullcandy

https://www.engadget.com/2293698/bose-buys-audio-rival-skullcandy/
2•Markoff•13m ago•0 comments

Google's repository has crossed 1B CLs

1•oqsbo•14m ago•0 comments

CVE Record: CVE-2026-91403

https://www.cve.org/CVERecord?id=CVE-2026-91403
1•Daviey•19m ago•0 comments

Node.js: 5 vulnerabilities found, update now

https://nodejs.org/en/blog/vulnerability/october-2026-security-releases
4•danfritz•20m ago•1 comments

A million orthopteran singers from a year of continuous field recorders

https://www.biorxiv.org/content/10.64898/2026.10.18.759993v1
2•ersinesen•21m ago•0 comments

"Good" AI

https://thoughts.wyounas.com/p/what-does-good-ai-mean
2•simplegeek•23m ago•0 comments

Nonfiction Is Struggling. Publishers Are Making It Worse

https://thewalrus.ca/nonfiction-is-struggling-publishers-are-making-it-worse/
4•simplegeek•23m ago•0 comments

A Lost Schrödinger Manuscript Reveals a Surprising Twist in Quantum Physics

https://www.sciencealert.com/a-lost-schrdinger-manuscript-reveals-a-surprising-twist-in-quantum-p...
3•ibobev•24m ago•0 comments

Cable theft causes Openreach broadband outage for thousands in Thurnscoe, UK

https://www.datacenterdynamics.com/en/news/cable-theft-causes-openreach-broadband-outage-for-thou...
2•GloVin•28m ago•0 comments

Compare grid features, side by side

https://comparegrids.com/features
1•davidvela•30m ago•0 comments

A framework for evaluating agentic AI systems

https://deepsense.ai/blog/your-agent-passed-the-eval-should-you-ship-it/
2•nvmdbljstm•33m ago•0 comments

Patch the Planet – The Trail of Bits Blog

https://blog.trailofbits.com/2026/06/22/introducing-patch-the-planet/
3•janandonly•36m ago•0 comments

Terminal Setup for macOS: ZSH and Oh My Zsh

https://solomk.in/posts/terminal-configuration
2•ankitg12•36m ago•0 comments

Compaction Laundering:Provenance Destruction in Context-Compacting Coding Agents

https://arxiv.org/abs/2610.29869
2•ersinesen•37m ago•0 comments

ChatGPT Ads as over 100k advertisers have used the platform

https://openai.com/index/chatgpt-ads-expands-26-new-countries/
3•haebom•40m ago•0 comments

Show HN: A stateless MCP server over our docs – search, list_topics, get_article

https://chinaready.co/docs/api/
2•martinliucn•41m ago•0 comments

ZK-irp-firewall: Zero-knowledge invariant enforcement for AI agents

https://github.com/trenttrinder1111-byte/zk-irp-firewall
3•trenttrinder111•42m ago•0 comments

A Markdown File Should Just Open

https://joshuamorris.info/notes/2026/10/13/a-markdown-file-should-just-open/
10•TheWoollyBully•44m ago•1 comments

Halloween Gothic Reading Pathway

https://www.betterreads.dev/blog/halloween-gothic-pathway
3•zlu•48m ago•0 comments

AI Agent Observability with OpenTelemetry

https://signoz.io/blog/opentelemetry-ai-agent-observability/
8•dhruv_ahuja•48m ago•0 comments

They Want Your Blood

https://www.theverge.com/column/1015563/blood-death-clock-longevity-apps-health-tech
3•saikatsg•51m ago•0 comments

Show HN: no-fi – a linter for the ASCII wireframes agents draw

https://github.com/p-a-u-l-i-e/no-fi
1•PaulVanOijen•54m ago•0 comments

Turning IPv6 tunnels into programmable delay lines for pulsing DoS

https://blog.apnic.net/2026/10/22/turning-ipv6-tunnels-into-programmable-delay-lines-for-pulsing-...
2•frostbyte7•56m ago•0 comments