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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/
1•buibuibui•4h 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!

Face to Face with an Alligator? Here's What to Do

https://www.nytimes.com/2025/05/12/us/alligator-attacks-safety-tips.html
1•bookofjoe•2m ago•1 comments

JEP 518: JFR Cooperative Sampling

https://openjdk.org/jeps/518
1•za3faran•2m ago•0 comments

RPF: Rob's Programming Facility

https://www.prince-webdesign.nl/rpf
1•rbanffy•3m ago•0 comments

AI Diffusion Rule Rescinded

https://www.bis.gov/press-release/department-commerce-rescinds-biden-era-artificial-intelligence-diffusion-rule-strengthens-chip-related
1•asciimike•3m ago•0 comments

Apple Announces New iOS 19 and macOS 16 Accessibility Features Ahead of WWDC

https://www.macrumors.com/2025/05/13/apple-previews-ios-19-accessibility-features/
1•Tomte•4m ago•0 comments

Don't Unwrap Options: There Are Better Ways

https://corrode.dev/blog/rust-option-handling-best-practices/
1•mu0n•6m ago•0 comments

Psion Series 5 PDA

https://en.wikipedia.org/wiki/Psion_Series_5
1•DanielleMolloy•6m ago•0 comments

OpenTelemetry Protocol with Apache Arrow

https://opentelemetry.io/blog/2025/otel-arrow-phase-2/
1•tanelpoder•6m ago•0 comments

'The Office' Offshoot 'The Paper' to Premiere in September

https://variety.com/2025/tv/news/the-office-offshoot-the-paper-first-look-image-1236393734/
1•LLcolD•6m ago•0 comments

Master of Your Domain (early access edition)

https://bitfieldconsulting.com/books/master
1•mu0n•8m ago•0 comments

Why LLMs Are Not (Yet) the Silver Bullet for Unstructured Data Processing

https://unstract.com/blog/why-llms-struggle-with-unstructured-data/
1•naren87•8m ago•0 comments

Global Job Seekers' Interest in Foreign Roles Slowed Dramatically in 2024

https://www.hiringlab.org/2025/05/13/global-job-seekers-foreign-roles/
4•ChrisArchitect•12m ago•0 comments

AWRS SMC: Fast new algorithm for guiding LLMs as Bayesian inference

https://arxiv.org/abs/2504.05410
2•benlipkin•13m ago•0 comments

The Digital Storytelling Handbook

https://news.microsoft.com/handbook/
2•doener•13m ago•0 comments

Perl Community Conference Summer 2025

https://blogs.perl.org/users/oodler_577/2025/05/call-for-papers---perl-community-conference-summer-2025.html
2•rus20376•16m ago•0 comments

Have you successfully claimed SLA credits from your cloud provider?

1•oladekola•17m ago•0 comments

Microsoft is reportedly about to lay off 3% of its workforce

https://techcrunch.com/2025/05/13/microsoft-is-reportedly-about-to-lay-off-3-of-its-workforce/
8•GreenGames•20m ago•1 comments

Nvidia sending 18,000 of its top AI chips to Saudi Arabia

https://www.cnbc.com/2025/05/13/nvidia-blackwell-ai-chips-saudi-arabia.html
5•LAsteNERD•20m ago•1 comments

Eradicating Trivial Vulnerabilities, at Scale

https://www.ncsc.gov.uk/blog-post/eradicating-trivial-vulnerabilities-at-scale
2•fanf2•22m ago•0 comments

Show HN: Get Unlimited Startup Ideas

https://founderevolve.com/
2•vojtechrichter•23m ago•0 comments

Ask HN: I am 17y/o failed 16 indie ideas, any programs suggestions

1•sahil423•24m ago•1 comments

On the Very Real Dangers of the Artificial Intelligence Hype Machine

https://lithub.com/on-the-very-real-dangers-of-the-artificial-intelligence-hype-machine/
1•cratermoon•25m ago•0 comments

Show HN: Gamod Build games powered by AI

https://gamod.vercel.app/#waitlist
1•sahil423•25m ago•0 comments

PyPI Organizations

https://blog.pypi.org/posts/2023-04-23-introducing-pypi-organizations/
2•calpaterson•26m ago•0 comments

ElephantShadow: Use PHP for SSR of Webcomponents

https://github.com/ulrischa/ElephantShadow
1•ulrischa•27m ago•0 comments

Free the Lizard

https://github.com/mozilla-firefox/firefox/commit/c4cc52826abd53e1121e4234d719cfd89ce58093
2•matteodelabre•28m ago•0 comments

California Institute for Machine Consciousness (CIMC) seeks research proposals

https://cimc.ai/#/proposals
2•thoughtpeddler•28m ago•0 comments

Show HN: Golang UniFi Network and Protect API CLI and Client

https://github.com/ClifHouck/unified
1•cliffy•28m ago•0 comments

Blog Posts Archive

https://v8.dev/blog
1•Brysonbw•29m ago•0 comments

BlinkOn 6 Day 1 Talk 2: Ignition – an interpreter for V8

https://www.youtube.com/watch?v=r5OWCtuKiAk
1•Brysonbw•33m ago•0 comments