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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: E2E Encrypted Terminal Screen Share

https://github.com/jsell-rh/lockwire
1•blinkerfluid•20s ago•0 comments

Decompile binaries to Rust, not C

https://twitter.com/mahal0z/status/2057147401987637300
1•mahaloz•3m ago•0 comments

Researchers in Ireland uncover medieval book in Rome with oldest English poem

https://apnews.com/article/old-english-manuscript-poetry-bede-caedmon-hymn-latin-italy-106769c014...
1•gmays•6m ago•0 comments

Why Multigres has its own connection pooler

https://multigres.com/blog/two-jobs-two-processes
1•gregorvand•6m ago•0 comments

What is Demand Coop and Tech workers make one

https://cahootzcoops.com/blog/what-is-a-demand-coop
1•DeonRob•10m ago•0 comments

Nx Console VS Code extension was the initial access vector in the GitHub breach

https://twitter.com/jeffbcross/status/2057236396658811020
1•vldszn•11m ago•1 comments

What I'd audit on an AI-built SaaS before its first paying customer

https://knbrlo.com/blog/audit-ai-built-saas/
1•knbrlo•13m ago•1 comments

Windows 98½

https://win9-5.com/desktop.html
1•keepamovin•13m ago•0 comments

81yo Grandma Streaming Minecraft to Pay for Grandson's Cancer Swatted

https://www.thegamer.com/grammacrackers-81-year-old-minecraft-youtuber-swatted/
1•kirubakaran•14m ago•0 comments

New dinosaur species Nagatitan chaiyaphumensis

https://www.smithsonianmag.com/smart-news/a-man-spotted-strange-looking-rocks-near-a-pond-in-thai...
1•firasd•16m ago•0 comments

Compromised Nx Console

https://github.com/nrwl/nx-console/security/advisories/GHSA-c9j4-9m59-847w
1•0xedb•16m ago•0 comments

Built for Productivity: What the Data Shows About Kotlin

https://blog.jetbrains.com/kotlin/2026/05/built-for-productivity-what-the-data-shows-about-kotlin/
1•lemonlime227•17m ago•0 comments

Our billing pipeline was suddenly slow

https://blog.cloudflare.com/clickhouse-query-plan-contention/
1•ChicknNuggt•17m ago•0 comments

The AI Client in WordPress 7.0

https://make.wordpress.org/core/2026/03/24/introducing-the-ai-client-in-wordpress-7-0/
1•qainsights•19m ago•1 comments

Show HN: SafeRun – Replay debugging and inline prevention for AI agents 2

2•Tidianez•32m ago•1 comments

Small note on solving x^(n/m) = a

https://12000.org/my_notes/solving_equation/index.htm
1•oliverkwebb•32m ago•0 comments

Stop paying $360/year to access your own email history

https://mailvaulty.com
1•khaledsabae•35m ago•0 comments

Show HN: My custom Statusline for Claude Code (Python wrapper around claudeline)

https://gist.github.com/Reebz/741c5647c860fe0b5214f39d9d887240
1•Reebz•44m ago•0 comments

San José State leaped to No. 2 in national computer science ranking

https://edsource.org/2026/san-jose-state-coding-skills-ranking/758707
2•littlexsparkee•44m ago•0 comments

Ask HN: How to make the best of the Mega IPO/ Index fund debacle?

2•jppope•51m ago•2 comments

Professional Scripted product demos with GSAP with Claude

https://spanthi.com/blog/gsap-choreography/
1•vein05•52m ago•0 comments

Experimenting with graph-based semantic memory for AI agents

https://github.com/AEndrix03/Graft
2•AEndrix03•55m ago•0 comments

Intuit to lay off over 3k employees to refocus on AI

https://techcrunch.com/2026/05/20/intuit-to-lay-off-over-3000-employees-to-refocus-on-ai/
12•wapasta•55m ago•1 comments

Technology creates an illusion of control that risks robbing us of meaning

https://www.punkt.ch/blogs/editorials/punkt-losing-traction
7•James72689•1h ago•1 comments

How not to care online: Survival guide for staying human

https://www.jpost.com/health-and-wellness/article-884204
1•heavydevil•1h ago•0 comments

White House briefs AI firms on plans for model review

https://www.reuters.com/legal/litigation/white-house-briefs-ai-firms-plans-model-review-informati...
6•petethomas•1h ago•0 comments

Did AI Game the Commonwealth Prize?

https://unherd.com/2026/05/invasion-of-the-literary-bots/
1•627467•1h ago•1 comments

LAN-LOK: The Antarctic DOS Sabotage Game Lost for 34 Years

https://alphapixeldev.com/lan-lok-the-antarctic-dos-sabotage-game-lost-for-34-years-part-1/
1•miffe•1h ago•0 comments

What Models? Helps Match Local AI Models to Your Hardware

https://whatmodelscanirun.com/
1•javatuts•1h ago•0 comments

SecretScanner is an open-source tool for discovering passwords, API, tokens

https://github.com/deepfence/SecretScanner
2•javatuts•1h ago•0 comments