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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!

How We Made a Text-to-Speech Model Respond in Sub-50 ms

https://nari-labs.com/blog/qwen3-tts-speed-cost-frontier/
1•toebee•1m ago•1 comments

Flagwars.lol

https://www.flagwars.lol
1•rgbrgb•1m ago•0 comments

Run Graph Queries on DuckDB/DuckLake Using ISO GQL

https://github.com/rahul-iyer/duckdb-gql
1•crazzy4•1m ago•0 comments

Jamie Justice Is Running a $101M Longevity Science Fair

https://time.com/collection/longevity-leaders/2026/jamie-justice/
1•LYFMail•2m ago•0 comments

The US techlash is real

https://www.ft.com/content/105b8b46-7109-402d-84cf-2616b17bfac1
2•thm•3m ago•0 comments

My AI agents kept trying to cross red lines, so I wrote them a constitution

https://github.com/Chong169/a-constitution-for-one
2•sucong178899•3m ago•0 comments

How Frontier AI Is Changing the Economics of Cybersecurity

https://corporate.comcast.com/stories/how-frontier-ai-is-changing-the-economics-of-cybersecurity
2•officialhocc•3m ago•0 comments

Anthropic's approach to teaching and learning AI

https://claude.com/blog/anthropics-approach-to-teaching-and-learning-ai
2•ihuman•4m ago•0 comments

Slack puts coding agents in the team chat

https://slack.com/blog/news/slack-code-channels-for-agents?nojsmode=1
2•NovaCoding-G•5m ago•0 comments

Every shape can be cut exactly in half with one straight line

https://bisecto.com/every-shape-can-be-cut-in-half.html
3•bpx51•6m ago•1 comments

Share a read-only snapshot of a Codex thread

https://learn.chatgpt.com/docs/use-chatgpt
2•tosh•7m ago•0 comments

A Need for Speed

https://www.filfre.net/2026/08/a-need-for-speed/
3•dmazin•7m ago•0 comments

Take-Two subpoenas Microsoft and Discord in hunt for GTA 6 leaker

https://www.dexerto.com/gta/take-two-subpeonas-microsoft-and-discord-in-hunt-for-gta-6-leaker-340...
2•davikr•7m ago•0 comments

Show HN: Public Muscriptor Instance (latest, most powerful Audio-to-MIDI model)

https://www.pianoify.net/
2•jardy•7m ago•0 comments

LinkedIn Has Accidentally Become a Dating Site

https://www.wsj.com/lifestyle/linkedin-has-accidentally-become-a-dating-sitedespite-its-no-romanc...
2•AnodicElegy•7m ago•0 comments

Tell HN: Stop deleting so many posts and comments

3•orangeribbon•8m ago•0 comments

Show HN: Telex Page – Turn secrets into AES 256 encrypted PDFs, locally

https://telexpage.com/
2•cucho•9m ago•1 comments

Modelingmadness.com, The Finest Review Site on the Web: Since 1995

https://modelingmadness.com/index.htm
3•joebig•9m ago•0 comments

Experiments for the Independent Science Society

https://chillphysicsenjoyer.substack.com/p/experiments-for-the-independent-science
2•surprisetalk•12m ago•0 comments

How we built a proxy to migrate Kafka producers with zero downtime

https://www.warpstream.com/blog/orbit-kafka-auto-migration
8•exposition•12m ago•1 comments

Still running Screenly OSE? Here's what you've missed

https://forums.screenly.io/t/still-running-screenly-ose-heres-what-youve-missed/6766
2•mvip•14m ago•0 comments

Show HN: Bounded GenAI metrics from Otel traces with O raw prompts

https://github.com/llm-measurement/otelcol-genai-sketches
3•kwisatzh•14m ago•1 comments

Nintendo Wipes Out 400 Switch Emulator Repos in Single-Day GitHub Sweep

https://torrentfreak.com/nintendo-wipes-out-400-switch-emulator-repos-in-single-day-github-sweep/
3•iamnothere•15m ago•0 comments

New snake species named in honor of Guns N' Roses guitarist Slash

https://www.popsci.com/environment/snake-species-named-after-guns-n-roses-guitarist-slash/
2•ohjeez•15m ago•0 comments

New York unseats San Francisco as the top market for tech talent, CBRE reports

https://www.cnbc.com/2026/08/21/new-york-san-francisco-tech-talent-cbre.html
2•toomuchtodo•16m ago•0 comments

How to Practice

https://www.newyorker.com/magazine/2021/03/08/how-to-practice
2•simonebrunozzi•16m ago•0 comments

Why do we need new agentic browser

https://www.bolshchikov.com/p/why-do-we-need-a-new-agentic-browser
2•bolshchikov•16m ago•0 comments

Natural Light Is an Essential Nutrient

https://www.midwesterndoctor.com/p/why-light-is-an-essential-nutrient
2•bilsbie•17m ago•1 comments

Noswoosh: Instant, animation-free switching between macOS Spaces

https://github.com/mmathys/noswoosh
2•k5hp•20m ago•0 comments

Block AI from installing malicious NPM packages

https://prasannamestha.medium.com/a-tool-to-block-ai-from-installing-malicious-npm-packages-c82bd...
2•pmestha•20m ago•0 comments