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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!

Show HN: Voyager 1 could've lasted MUCH longer

1•Sath52•17s ago•0 comments

Germany pledges to phase out fossil fuels for first time with target of 2045

https://www.theguardian.com/environment/2026/sep/23/germany-commits-for-first-time-to-phasing-out...
1•novaRom•33s ago•0 comments

There Is No Now

https://artemandreenko.com/blog/there-is-no-now/
1•miovoid•1m ago•1 comments

Re: Skillsync

https://news.ycombinator.com/reply?id=49743049&goto=item%3Fid%3D49743049
1•ruiqitan•1m ago•0 comments

US preparing to ban exports of diesel fuel for 90 days

https://www.politico.com/news/2026/09/23/white-house-ban-diesel-01089294
2•ck2•1m ago•1 comments

Repligraphs: A Primitive for AI Provenance

https://lukechampine.com/repligraphs/
1•nemo1618•3m ago•0 comments

UK to fight Russian disinformation and push new global AI standards Burnham says

https://www.bbc.com/news/articles/c6rerlq99w30o
1•r721•4m ago•0 comments

I Launched a Product by Accident

https://rightbadcode.com/spotcheck/
1•speckx•4m ago•0 comments

Show HN: Reflex – a GGUF/CUDA inference engine tuned for cold-start latency

https://github.com/lateos-ai/reflex
1•leochong•4m ago•0 comments

Hacker News Site Layout

1•cdieck88•4m ago•1 comments

Ext-Turbovec: A Vector Index Inside Your PHP Process

https://eric.mann.blog/ext-turbovec-vector-search-php/
2•eamann•6m ago•0 comments

Muxly – Native Tmux for iPhone and iPad

https://muxly.sh/
2•msupuka•6m ago•0 comments

Making Tailscale Faster

https://tailscale.com/blog/making-tailscale-faster
2•yarapavan•7m ago•0 comments

Not reading the code cannot become the new norm

1•selectedambient•7m ago•1 comments

Show HN: Crest – Answer Claude Code approvals from your MacBook's notch

https://crestnotch.app/claude-code-notch
2•zack40x•7m ago•0 comments

ApprenticeBench: Can AI agents learn a real job end to end?

https://neocognition.io/blog/apprentice-bench
2•moyicat•8m ago•0 comments

Recursive self-improvement of AI research agents

https://arxiv.org/abs/2609.26457
2•handfuloflight•8m ago•1 comments

Xbox Cuts Jobs, Moves Game Studios Under Activision (1)

https://news.bloomberglaw.com/daily-labor-report/xbox-cuts-jobs-moves-game-studios-under-activision
2•frank_clover•9m ago•0 comments

Show HN: Slop Mop, a Chrome extension that mops your LinkedIn feed

https://slopmop.lol
2•tomfrazier•10m ago•0 comments

UK military jamming other nations' satellites to defend itself, BBC told

https://www.bbc.com/news/articles/c32l8y8kygdvo
3•thm•10m ago•0 comments

What I learned from building 50 side projects

https://smartsoft.lv/en/articles/experiments-and-side-projects/
1•absurdwebsite•11m ago•0 comments

Video Commander: The IDE for Video Engineers

https://video-commander.com
2•petecooper•12m ago•0 comments

Google Hasn't Even Acknowledged This Months-Old YouTube Bug

https://www.extremetech.com/internet/google-hasnt-even-acknowledged-this-months-old-youtube-bug
1•speckx•13m ago•0 comments

Uproar in France over award-winning author accused of using AI

https://www.bbc.com/news/articles/ck7v4y45893go
2•theanonymousone•14m ago•0 comments

Show HN: Guerilla YouTube Playlist App

https://y2pilot.com/
1•lvidakovic•14m ago•0 comments

Jev Decision Index Leaderboard

https://huggingface.co/spaces/multimodalart/jev-decision-index
1•rgbrgb•16m ago•0 comments

Big dumb moron explains Jev in March 2025 – and then does nothing about it

https://arcturus-labs.com/blog/2025/03/31/supercharging-llm-classifications-with-logprobs/
1•JohnBerryman•18m ago•0 comments

Martha's Rule rolled out at every A&E department in England

https://www.bbc.co.uk/news/articles/c6lyep7l7qppo
1•smusamashah•19m ago•0 comments

RAF launches first space squadron dedicated to defending Britain's satellites

https://www.gov.uk/government/news/raf-launches-first-ever-space-squadron-dedicated-to-defending-...
1•giuliomagnifico•19m ago•0 comments

The last time India counted caste, the protests were filed as proof it worked

https://rentry.co/2bu7ch7k
1•ka_lentha•20m ago•0 comments