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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!

Psychedelics align brain activity with context

https://www.nature.com/articles/s41586-026-10910-z
1•dr_dshiv•1m ago•0 comments

Neo-Etiquette Basics: The New Rules of Being Human

https://www.joanwestenberg.com/p/neo-etiquette-basics-the-new-rules
1•rapnie•2m ago•0 comments

Why Everyone Is Obsessed with Model Routing

https://menlovc.com/perspective/stripe-to-acquire-openrouter-why-everyone-is-obsessed-with-model-...
1•tosh•4m ago•0 comments

Owner of grok.bot asks xAI for $1M

https://grok.bot/
2•mrpadie•7m ago•1 comments

Show HN: UI Inspector for Tauri

https://github.com/mathematic-inc/tauri-plugin-ui-inspector
1•jrandolf•7m ago•0 comments

Succinct and Fast Tiny Pointer Hash Tables

https://arxiv.org/abs/2607.28892
1•matt_d•7m ago•0 comments

Block-Layer Error Injection

https://lwn.net/Articles/1086344/
2•pykello•11m ago•0 comments

Btrfs Ready with More Performance Improvements for Linux 7.3: Some ~3-5x Wins

https://www.phoronix.com/news/Linux-7.3-Btrfs
2•water-drummer•19m ago•0 comments

Winchester Mystery House

https://en.wikipedia.org/wiki/Winchester_Mystery_House
2•pchangr•27m ago•0 comments

Claude Revived My Microsoft Band 2

https://webenclave.com/posts/bringing-a-microsoft-band-2-back-from-the-dead/
2•bchip•37m ago•0 comments

The most thoroughly commented linker script (probably)

https://blog.thea.codes/the-most-thoroughly-commented-linker-script/
1•rramadass•38m ago•1 comments

Show HN: Doubletake – a daily spot-the-difference in ink and wash

https://doubletake.day
1•jokojogi•38m ago•0 comments

The US national debt now stands at $40T

https://apnews.com/article/treasury-national-debt-limit-a27a8d3651ff810b25c610d3e1b6259d
5•geox•53m ago•6 comments

Basics of the Unix Philosophy

https://cscie2x.dce.harvard.edu/hw/ch01s06.html
1•num42•54m ago•0 comments

Show HN: Linux and iPhone Continuity (iMessage / SMS)

https://github.com/zackb/tether
3•zackb•55m ago•0 comments

KVM Planes Head for Takeoff

https://lwn.net/Articles/1087590/
1•pykello•57m ago•0 comments

The Grand Unified Theory Extends A.E.'S Goals

https://medium.com/@f9121212/the-grand-unified-theory-extends-a-e-s-goals-b2c9456d7813
1•ortrich•59m ago•1 comments

Why Microsoft Entertainment Pack had a sticker announcing that it had Tetris?

https://devblogs.microsoft.com/oldnewthing/20260818-00/?p=112621
7•tybulewicz•1h ago•0 comments

The Pit of Success – An Interview with Rico Mariani

https://www.youtube.com/watch?v=48Rig6v-xYU
1•bananaboy•1h ago•0 comments

MailSalonSync – replace offlineimap or mbsync with JMAP support, written in Go

https://git.cerberusgames.ca/Starstreak/MailSalonSync
2•QBasicBitch•1h ago•0 comments

Thoughts About Scaling Law (By the Founder of ZAI of GLM Fame)

https://xcancel.com/antibot/captcha
3•vismit2000•1h ago•0 comments

Designing Loops for Production-Grade Work

https://www.liquid.ai/blog/agent-loops
2•kiyanwang•1h ago•0 comments

The little-told story of the WWII pet cull

https://www.bbc.com/news/magazine-24478532
4•madihaa•1h ago•1 comments

Measuring Strait of Hormuz ship traffic and how Big Oil profits from it

https://wherobots.com/blog/hormuz-vessel-detection/
1•dr-jia-yu•1h ago•1 comments

Polygon Discovers Fire Emblem: Fortune's Weave Requires the Console It Was Made

https://noisypixel.net/fire-emblem-fortunes-weave-switch-2-exclusive/
2•jamarna•1h ago•1 comments

Packing Malware in Rosetta 2

https://kernelkennel.com/blog/summercon2026-rosetta/
3•n0blenote•1h ago•0 comments

American killed by lightning while climbing Italian volcano

https://www.newsweek.com/american-killed-by-lightning-while-climbing-italian-volcano-12330506
1•jamarna•1h ago•0 comments

Slack Code Is Live

https://twitter.com/Benioff/status/2090240159115853956
3•ramoz•1h ago•1 comments

Armwood High graduate uses 40 scholarships to attend Princeton

https://baynews9.com/fl/tampa/news/2026/08/14/armwood-high-graduate-uses-scholarships-to-make-pri...
3•banimak•1h ago•0 comments

SeedSQL – Generate realistic SQL mock data with foreign key integrity

https://seed-sql.ai.studio
3•hrdhanush•1h ago•0 comments