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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•6mo 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!

MI300X vs. H100 vs. H200 Benchmark Part 1: Training

https://newsletter.semianalysis.com/p/mi300x-vs-h100-vs-h200-benchmark-part-1-training
1•nl•3m ago•0 comments

Big tech alternatives built on Nostr

https://noalt.app/
1•nout•9m ago•0 comments

Show HN: GPU-Based Kubernetes HPA for Triton Inference Server

https://github.com/uzunenes/triton-server-hpa
1•uzunenes•10m ago•1 comments

Show HN: I Implemented "Two-Pass Generation" in Gemini Using Only System Prompts

1•DosankoTousan•18m ago•0 comments

Java Hello World, LLVM Edition

https://www.javaadvent.com/2025/12/java-hello-world-llvm-edition.html
2•ingve•22m ago•0 comments

Show HN: Playwriter MCP – Automate the Browser Using Cursor, Claude, VS Code

https://github.com/remorses/playwriter
1•xmorse•23m ago•1 comments

Patching Pulse Oximeter Firmware

https://stefan-gloor.ch/pulseoximeter-hack
2•ibobev•24m ago•0 comments

Can We Stop Our Digital Selves from Becoming Who We Are?

https://www.nytimes.com/2025/12/07/opinion/meta-facebook-ruling-algorithms.html
1•falcor84•27m ago•0 comments

POI classification and OSM, a match made in hell

https://martijn.vanexel.net/poi-classification-and-osm-a-match-made-in-hell/
1•marklit•27m ago•0 comments

Mechanical Habits

https://matklad.github.io/2025/12/06/mechanical-habits.html
1•ibobev•28m ago•0 comments

Brussels nativity scene faces controversy over faceless characters

https://www.brusselstimes.com/1862636/brussels-split-over-faceless-nativity-set-as-baby-jesus-was...
2•a022311•28m ago•1 comments

The Married Scientists Torn Apart by a Covid Bioweapon Theory

https://www.nytimes.com/2025/12/07/us/china-virologist-li-meng-yan-coronavirus.html
2•vinni2•29m ago•1 comments

Ban X in Europe

https://ban-x-in.eu/
2•saubeidl•30m ago•1 comments

Only 12 Pearl Harbor survivors remain: On the 84th anniversary, none can attend

https://www.cnn.com/2025/12/07/us/pearl-harbour-bombing-anniversary-hnk
1•1659447091•31m ago•0 comments

The Quintessential urban design of 'Sesame Street

https://www.nytimes.com/2025/07/28/realestate/sesame-street-design-over-the-years.html
1•zeristor•36m ago•3 comments

How to Build an LLM-Powered Database Query Bot for Your Web App in 1 Day

https://www.semicolonandsons.com/articles/how-to-build-an-llm-powered-database-query-bot-for-web-...
1•jackkinsella•37m ago•0 comments

Ways in which GenAI has changed my (tech) life so far

https://lengrand.fr/ways-in-which-genai-has-changed-my-tech-life-so-far/
2•jlengrand•37m ago•0 comments

git style branching for Local PostgreSQL

https://old.reddit.com/r/PostgreSQL/comments/1pgefg5/gitstyle_branching_for_local_postgresql/
1•lenvl•40m ago•0 comments

Zyro AI: Unified SEO, Content, UX and Analytics Platform

https://www.zyro.world
2•edwardglush•42m ago•0 comments

Choosing Vim over VSCode

https://alexsci.com/blog/vim-over-vscode/
1•begueradj•45m ago•1 comments

Show HN: Beautiful changelog hosting for SaaS products – Changelogy

https://www.changelogy.com/
1•aleeexg•46m ago•2 comments

From Beijing to San Francisco: What NeurIPS 2025 Reveals About AI Leadership

https://aiworld.eu/story/from-beijing-to-san-francisco-what-neurips-2025-reveals-about-ai-leadership
2•JSR_FDED•49m ago•0 comments

Europe: WhatsApp opens for third-party apps

https://faq.whatsapp.com/916543719558426
4•schnatterer•49m ago•0 comments

Tired of Vue toast libraries, so I built my own (headless, Vue 3, TS-first)

1•adrianjanocko•50m ago•0 comments

Sega Master System: Using All the Colors

https://bumbershootsoft.wordpress.com/2025/12/06/sega-master-system-using-all-the-colors/
2•ibobev•51m ago•0 comments

The Polyglot Neuroscientist Resolving How the Brain Parses Language

https://www.quantamagazine.org/the-polyglot-neuroscientist-resolving-how-the-brain-parses-languag...
1•nsoonhui•52m ago•0 comments

Show HN: AI Stickers – Turn selfies into personalized sticker packs

https://aistickers.app
1•issso•53m ago•0 comments

Go is portable, until it isn't

https://simpleobservability.com/blog/go-portable-until-isnt
2•khazit•55m ago•1 comments

Show HN: Lens - A Bicycle for the Mind in the Age of AI

https://github.com/mazzzystar/Lens
1•mazzystar•56m ago•0 comments

Have you been productive lately?

https://dashzz.com
1•razvanbord•1h ago•0 comments