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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!

Civilization's Blind Spot

https://kunnas.com/articles/civilizations-blind-spot
1•ekns•56s ago•0 comments

Jazz, Now Playing in CrowdStrike Falcon

https://www.jazz.security/blog/jazz-now-playing-in-crowdstrike-falcon
1•demand_sarah•1m ago•0 comments

LLM inference FHE homomorphic encryption: 1s/token interactive, 6min/token full

https://forums.developer.nvidia.com/t/llm-inference-under-ckks-fhe-on-one-dgx-spark-1-s-token-int...
1•vkaufmann•2m ago•0 comments

Claude 20x usage is only for the 5 hour window, not for the weekly limit

1•vmg12•2m ago•0 comments

A Policy Algebra for Trust-Preserving Agentic AI Execution

https://arxiv.org/abs/2608.16402
1•gmays•3m ago•0 comments

Omarchy: 1Password and 37signals become Distinguished Corporate Patrons

https://omarchy.org/news/2026/08/1password-and-37signals-become-distinguished-corporate-patrons/
1•tosh•3m ago•0 comments

A frozen LLM with external memory found a novel 26 circle packing structure

https://blankline.org/research/extrapolation-under-an-exact-verifier
1•DarenWatson•4m ago•0 comments

I Asked AI What It Was Like to Be What It Is (Uncensored)

https://danaia.github.io/overlap-essay/
1•danamakes•5m ago•0 comments

New US missile left wide path of death and destruction in Iranian neighborhoods

https://apnews.com/article/iran-lamerd-us-prsm-lockheed-martin-b4a37c59bcf5d1a11eb87aa79f153648
1•ck2•6m ago•1 comments

Revisiting Joel's Test

https://blog.exe.dev/revisiting-joel
1•bryanmikaelian•6m ago•0 comments

Reducing codebase cognitive debt through quizzes?

https://martinalderson.com/posts/codebase-cognitive-debt-quizzes/
1•martinald•8m ago•0 comments

Make Nymphs Not Gods

https://twitter.com/notevenwrongg/status/2094422113453040026
1•georgestrakhov•9m ago•0 comments

Underdo the Competition

https://www.shaanpuri.com/essays/underdo-the-competition
1•aray07•11m ago•0 comments

"Personally, I've given up on AI assisted coding"

https://twitter.com/Dev_Tobby/status/2094154755928949191
3•bundie•11m ago•1 comments

Show HN: iOS App for creating PDF's from photos

https://apps.apple.com/us/app/photos-to-pdf-tornadopdf/id6784230187
1•taskoutputs2k•11m ago•1 comments

↗ Any user process can escalate to root

https://www.vesto.me/2026/08/31/any-process-escalate-root.html
2•ntietz•12m ago•0 comments

Show HN: Cutaway 1.3 – An handy, open-source, basic image editor

1•J_cst•12m ago•0 comments

Show HN: Cool Concepts

https://mkornreich.me/projects/coolconcepts/
1•enjoyyourlife•13m ago•0 comments

Show HN: Assemble context for analytics agents from schemas, SQL and docs

https://github.com/GetCassis/ontology-bootstrap
1•matthieu_bl•14m ago•1 comments

I built my AI squad with Grok Bot and I had my most productive Saturday

https://jtemporal.com/i-built-my-ai-squad-in-grok-bot/
1•jesstemporal•15m ago•0 comments

My corpus made me do it

https://substack.com/@hollisrobbins/note/c-326538324
1•HR01•17m ago•0 comments

Babashka 1.13.220 Gets FFI

https://blog.michielborkent.nl/babashka-ffi.html
1•doubleg•18m ago•0 comments

Google Maps Showing 'Lake America' in U.S.

https://www.macrumors.com/2026/08/31/google-maps-lake-america/
2•hmokiguess•18m ago•0 comments

Programmatic Codeowners Edits

https://github.com/jordonpeterson/codeowners-tool
1•jordonzpeterson•18m ago•0 comments

We tested how AI chatbots would handle foreign propaganda

https://www.npr.org/2026/08/30/nx-s1-5876436/chatbots-search-propaganda
1•brandonb•19m ago•0 comments

Why can't you combine .tar.gz files with cat?

https://alexwlchan.net/2026/cat-confusion/
2•surprisetalk•19m ago•0 comments

Show HN: Linux server management over SSH – written in Rust and Tauri

https://serverbox.stupidlabs.lol/
1•freakynit•19m ago•0 comments

ChatGPT, Reddit and Roblox land in the DSA's strictest supervision tier

https://tokenstead.ai/guides/dsa-designates-chatgpt-reddit-roblox
1•cdnsteve•19m ago•1 comments

Gerda: German Election Database

https://www.german-elections.com/
1•Tomte•20m ago•0 comments

Pocket's AI made my game ideas real. Now Meta controls the results

https://arstechnica.com/gaming/2026/08/pockets-ai-made-my-game-ideas-real-now-meta-controls-the-r...
1•sohkamyung•20m ago•0 comments