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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!

Nanowar of Steel – Kotlin (Official Power Point Video)

https://www.youtube.com/watch?v=BsfXZjKLT9A
1•napolux•4m ago•1 comments

WPoptic, A growing public database of WordPress plugin usage

https://wpoptic.com/
1•WPoptic•5m ago•0 comments

AI has granted America new power

https://www.economist.com/leaders/2026/06/18/ai-has-granted-america-vast-new-power
1•isaacfrond•6m ago•0 comments

Use your own language model key in VS Code

https://code.visualstudio.com/blogs/2026/06/18/byok-vscode
2•subset•7m ago•1 comments

The Secret Drone Operation That's Changing the Ukraine War

https://www.politico.com/news/magazine/2026/06/19/ukraine-russia-drones-attack-00967074
1•0in•8m ago•0 comments

Lisuan Tech LX Pro 24GB GPU

https://www.techpowerup.com/gpu-specs/lx-pro.c4408
1•CapricornNoble•9m ago•1 comments

Conservatives plan nationwide protest against AI data centers

https://www.axios.com/2026/06/18/conservatives-protest-ai-data-centers
1•johnbarron•9m ago•0 comments

EU to soon classify AWS and Azure as gatekeepers under DSA

https://www.heise.de/en/news/Report-EU-to-soon-classify-AWS-and-Azure-as-gatekeepers-under-DSA-11...
2•snowpid•12m ago•0 comments

FDA committee recommends a new mRNA flu vaccine

https://www.npr.org/2026/06/18/nx-s1-5863570/flu-vaccine-mrna-moderna-fda
1•isaacfrond•13m ago•0 comments

Rolls-Royce secures deal to build small nuclear reactors for Sweden

https://www.euronews.com/business/2026/06/16/rolls-royce-secures-deal-to-build-small-nuclear-reac...
1•isaacfrond•14m ago•0 comments

Sometimes you get stuck in a sinkhole for a few years

https://www.avabear.xyz/p/sometimes-you-get-stuck-in-a-sinkhole
1•jger15•14m ago•0 comments

How Russia's nuclear-powered 'Skyfall' missile works

https://www.npr.org/2026/06/18/nx-s1-5843252/russia-nuclear-powered-missile-burevestnik
1•rolph•17m ago•0 comments

Rethinking Modularity in Ruby Applications

https://noteflakes.com/articles/2026-06-18-syntropy-modules
1•ciconia•17m ago•0 comments

Sshto v1.01

https://github.com/vaniacer/sshto
1•vaniac•18m ago•1 comments

Brexit cost 6% of UK economy, Bank of England company data suggests

https://www.bbc.com/news/articles/cvg75npqkq4o
2•johnbarron•19m ago•0 comments

Developer APIs for parsing and tailoring CVS

1•engspeedy•25m ago•1 comments

Bubble Sort Game

https://patrickgh3.itch.io/bubble-sort
1•memalign•28m ago•0 comments

Show HN: Tracking iCal feed latency across O365/Google/Apple

https://sync.timetastic.co.uk/
1•turkeywelder•29m ago•0 comments

Sorry, my software is better with agents

https://macro.land/blog/sorry-my-software-is-better-with-agents/
2•priyadarshy•32m ago•0 comments

Plotnine

https://plotnine.org/
1•tosh•33m ago•0 comments

Hey, N00B, We Didn't Hire You to Complete Tasks

https://newsletter.kentbeck.com/p/hey-n00b-we-didnt-hire-you-to-complete
3•RebootStr•35m ago•0 comments

Show HN: The Deconstructed VS Code

https://github.com/dipankar/dscode
1•dipankarsarkar•38m ago•0 comments

A coin toss isn't random. Maybe our choices aren't either

https://gt.ms/blog/free-will/?v=2
3•geetuu•38m ago•0 comments

PageToMD – A CLI tool to turn web pages into clean Markdown for AI agents

https://github.com/gs202/PageToMD
1•gs202•39m ago•0 comments

Vibe Coding at Scale? Engineering Strikes Back

https://blog.owulveryck.info/2026/06/19/vibe-coding-at-scale-engineering-strikes-back.html
1•owulveryck•39m ago•0 comments

Switching AI Tools Mid-Sprint Cost Us a Day (and What We Learned) – Week 6 R

https://theaileverageweekly.com/posts/how-switching-ai-tools-mid-sprint-cost-us-a-day-and-what-we...
1•talvardi7•40m ago•0 comments

Gistpreview.github.io: Gist HTML Preview

https://github.com/gistpreview/gistpreview.github.io
1•gurjeet•40m ago•0 comments

LUKS suspend failed to wipe volume encryption key from memory since Linux 6.9

https://mathstodon.xyz/@iblech/116769502749142438
2•microtonal•43m ago•0 comments

Why local AI – and why it matters

https://nexusfoundation.ngo/why-local-ai
2•kris_osiadacz•52m ago•0 comments

Braess's Paradox

https://en.wikipedia.org/wiki/Braess%27s_paradox
1•the-mitr•53m ago•0 comments