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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!

> 150 Polymarket wallets may have traded on military secrets, research finds

https://www.reuters.com/business/finance/more-than-150-polymarket-wallets-may-have-traded-militar...
2•petethomas•2m ago•0 comments

Hotdog Bench

https://zmuda.dev/blog/2026-08-20-hotdog-bench.html
1•zoogies•6m ago•0 comments

WebHarvest

https://webharvest.co
1•archemistz•9m ago•0 comments

DeepSeek harness: what doors does config over code open?

https://github.com/deepseek-ai/deepseek-harness
2•5mv2•9m ago•1 comments

How Much of the Internet Is Written with AI?

https://www.pewresearch.org/data-labs/2026/08/20/how-much-of-the-internet-is-written-with-ai/
1•DeepLogin•13m ago•0 comments

ChatGPT's Computer History tracks your clicks and keystrokes

https://www.theverge.com/ai-artificial-intelligence/980742/chatgpts-computer-history-tracks-your-...
1•NordStreamYacht•14m ago•0 comments

RadioSide Internet Radio Receiver

https://radioside.com/v1/#xl_xr_page_index
1•evo_9•15m ago•0 comments

Darth Vader speaks out on Flock cameras at City Council meeting [video]

https://www.youtube.com/watch?v=c5d5knDpb5s
1•consumer451•19m ago•0 comments

Top Anika Nilles "Working Man" Gags [video]

https://www.youtube.com/watch?v=O_ALmZlaAZ8
1•BiraIgnacio•22m ago•0 comments

New Modern Glossary of Computer Science

http://unfuck.i.ng/art/science/new_modern_glossary_of_computer_science/
2•singingfish•23m ago•0 comments

Show HN: Chat Threads

1•wclaster•27m ago•0 comments

China puts robocops on traffic duty, minus the arrest powers

https://www.reuters.com/technology/china-puts-robocops-traffic-duty-minus-arrest-powers-2026-08-20/
2•qwikhost•33m ago•0 comments

Oseltamivir Flops in the Critically Ill

https://voices.nejm.org/doi/full/10.1056/VOICESpost2600044
2•ggm•33m ago•1 comments

AI and Consciousness – A Skeptical Overview

https://www.cambridge.org/core/elements/ai-and-consciousness/E77C92088DA3C9F89E7FE7C75CBB1896
2•moondowner•34m ago•0 comments

Astronomers discover a new type of astrophysical object: A black hole star

https://news.mit.edu/2026/astronomers-discover-brand-new-type-astrophysical-object-black-hole-sta...
1•gmays•35m ago•0 comments

Cameroon's Lake Nyos Gas Burst: 30 Years Later

https://eos.org/science-updates/cameroons-lake-nyos-gas-burst-30-years-later
1•croes•37m ago•0 comments

The Unanchored Central Banker [video]

https://www.youtube.com/watch?v=k1ISaLwzm4c
2•toomuchtodo•40m ago•0 comments

It is a sign of the times that Amazon gets to call this fair use

http://observationalepidemiology.blogspot.com/2026/08/it-is-sign-of-times-that-amazon-gets-to.html
4•sonicrocketman•41m ago•2 comments

Damn Vulnerable Nginx Proxy (DVNP)

https://vwad.owasp.org/app/damn-vulnerable-nginx-proxy-dvnp/
1•thunderbong•44m ago•0 comments

There's no such thing as a small software team anymore

https://jacob.gold/posts/theres-no-such-thing-as-a-small-software-team/
8•mooreslaw•47m ago•7 comments

How A Texas student blew the whistle on a rogue AI hacking attempt

https://www.reuters.com/world/how-texas-student-blew-whistle-rogue-ai-hacking-attempt-2026-08-20/
2•petethomas•47m ago•1 comments

GitHub Outages Show the Limits of Reactive Scaling

https://rahmipruitt.me/content/github-outage-reactive-scaling/
1•rjpruitt16•48m ago•0 comments

Worse Is Better

https://en.wikipedia.org/wiki/Worse_is_better
3•chistev•50m ago•0 comments

The University as We Know It Is Finished

https://www.persuasion.community/p/the-multiversity-is-finished
7•seregine•51m ago•2 comments

Show HN: TakoVM – Serverless file systems for agents

https://tako-research.github.io/TakoVM/
3•sakuraiben•52m ago•0 comments

BetterClaude

https://github.com/ara-mkr/BetterClaude
2•AkhilRaja16•57m ago•0 comments

Hawkeye: Hardware-Aware GPU Kernel Optimization with Minimal Supervision

https://www.alphaxiv.org/abs/2608.hawkeye-hardware-aware-gpu-kernel-optimization
1•matt_d•57m ago•0 comments

ChatGPT Can Now Control iMessage, Potentially Raising Apple Privacy Concerns

https://finance.yahoo.com/technology/ai/articles/chatgpt-now-control-imessage-potentially-2056336...
5•sharms•59m ago•1 comments

Copyright does not protect AI-generated content in EU

https://mathstodon.xyz/@maxpool/117128107757895678
46•u1hcw9nx•1h ago•46 comments

Show HN: ParqDB – Vector search in the browser from Parquet over HTTP"

https://search.parqdb.io/
2•petrizhang•1h ago•0 comments