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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!

The most insane FAKE musician

https://www.youtube.com/watch?v=FRoXKvD19Po
1•Betelbuddy•1m ago•0 comments

Fast Programming: Stop Thinking

https://www.codesimplicity.com/post/the-secret-of-fast-programming-stop-thinking/
1•ndr•3m ago•0 comments

mobile-agent: faster mobile app iteration for AI coding agents

https://mobileagent.dev
1•tilt•3m ago•0 comments

SBoM creator and Vulnerability scanner (Threatclaw.ai)

https://www.threatclaw.ai/free-tools
1•manindersinghx•3m ago•0 comments

A studio website where every page is one PostgreSQL query, served off a Mac Mini

https://studionull.io/
1•losmanzanos•5m ago•0 comments

Goldman says AI layoffs are leaving 'long-lasting' scar, like the last 40 years

https://fortune.com/2026/10/30/goldman-sachs-ai-layoffs-displaced-workers-older-workers-past-tech...
1•randycupertino•5m ago•1 comments

It's Time to Abandon the Classical Twin Method

https://jayjoseph22.substack.com/p/its-time-to-abandon-the-classical
1•runarberg•6m ago•0 comments

The mathematical sciences in an AI-enabled world

https://terrytao.wordpress.com/2026/10/31/the-mathematical-sciences-in-an-ai-enabled-world/
1•smilelamp•6m ago•0 comments

Can you reverse coronary plaque?

https://www.empirical.health/blog/can-you-reverse-coronary-plaque/
1•brandonb•6m ago•1 comments

Mandaeism

https://en.wikipedia.org/wiki/Mandaeism
1•Bluestein•8m ago•0 comments

AI Is a Coup by the Tasteless

https://sancho.bearblog.dev/ai-is-a-coup-by-the-tasteless/
3•sancho-panza•10m ago•0 comments

The Currency of the Journal Article Is Collapsing

https://www.theatlantic.com/ideas/2026/10/ai-journal-articles-writing/689186/
1•jonah•16m ago•0 comments

Snowflake feature policy rules can now return a custom error message [video]

https://www.youtube.com/shorts/Z4ktXgJr3T0
1•yanivleven•16m ago•0 comments

CVE-2026-116155: ImageMagick Memory Leak via Crafted XMP Profile-VR by Agilehunt

https://www.agilehunt.com/blog/imagemagick-cve-2026-116155-xmp-profile-parameter-entity-memory-leak
2•vikzsharma•17m ago•0 comments

Show HN: Public procedure records for doctors, with sources

https://getopenhealth.org/
2•kyisaiah47•20m ago•0 comments

C2PA's eMudhra Moment

https://www.da.vidbuchanan.co.uk/blog/c2pa-four.html
2•Retr0id•20m ago•0 comments

Trade-off Analyzer · Architecture decisions you can defend

https://tradeoffanalyzer.com/
1•tanmaydesh5189•20m ago•0 comments

Show HN: CodeConnect: Coding Agents on Your iPhone

https://codeconnect.sh
4•datadroves•21m ago•0 comments

Show HN: Spotify FOSS Alternative with Google Drive, S3, Soulseek

https://github.com/Suleman-Elahi/Listune
3•inmate4587•22m ago•0 comments

Leaking the email of any YouTube user for $10k (2025)

https://brutecat.com/articles/leaking-youtube-emails/
3•zenincognito•23m ago•1 comments

NatWest announces 1k more jobs cut after AI efficiency drive

https://www.independent.co.uk/news/uk/home-news/natwest-bank-jobs-cuts-uk-ai-evelyn-partners-b307...
2•entryleveljobsc•24m ago•0 comments

Show HN: InBox Wall – A local-first, open-source email sanitizer for AI agents

https://github.com/Annora998/inboxwall
1•kurienbytes•25m ago•0 comments

Nearly 2 out of 3 teens and tweens use AI chatbots, new research shows

https://www.npr.org/2026/10/30/nx-s1-6022278/ai-artificial-intelligence-teens-jed-common-sense-media
1•entryleveljobsc•26m ago•0 comments

Ex-Meta Researcher Torrented Pirated Books, Deleted It 'Due to Litigation'

https://torrentfreak.com/ex-meta-researcher-torrented-pirated-books-dataset-deleted-it-due-to-all...
9•WesleyGrant782•27m ago•0 comments

Tolkien's legends are truer than our own

https://www.newstatesman.com/culture/books/book-of-the-day/2026/10/tolkiens-legends-are-truer-tha...
3•thinkingemote•28m ago•0 comments

DiffNotes: Lets your coding agent explain its PRs inline

https://github.com/igorkasyanchuk/diffnotes
2•igorkasyanchuk•32m ago•0 comments

The New Hot Job in Law Doesn't Require a J.D

https://www.nytimes.com/2026/10/31/business/dealbook/legal-engineer-ai-law.html
1•cainxinth•34m ago•0 comments

We hug: Individual differences predict emotional touch memories

https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0359868
1•gumby•34m ago•0 comments

Show HN: Tracegate – local CI that only skips tests it has proven it can skip

https://github.com/davidscotttufts/tracegate-ci
1•davidtufts•35m ago•0 comments

GAC starts mass-producing Level 4 robotrucks in China

https://asia-tech-news.ghost.io/gac-starts-mass-producing-level-4-pony-ai-robotrucks/
1•ilamont•36m ago•0 comments