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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•10mo 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 System Gets the Technology It Deserves

https://joelratnasothy.com/the-system-gets-the-technology-it-deserves/
1•MrDrDr•31s ago•0 comments

A proposal to classify happiness as a psychiatric disorder

https://pmc.ncbi.nlm.nih.gov/articles/PMC1376114/
1•wjSgoWPm5bWAhXB•47s ago•0 comments

I used my AI auditing tool to audit itself – and it found two real problems

https://github.com/liuhaotian2024-prog/K9Audit
1•zippolyon•1m ago•1 comments

Federal judge halts RFK Jr.'s changes to children's vaccine policies

https://www.npr.org/2026/03/16/nx-s1-5749530/judge-blocks-rfk-jr-vaccine-changes
1•geox•1m ago•0 comments

When Does Education Stop? (1962)

https://woodblock.com/michener.html
1•kody•1m ago•0 comments

A 43-second failover caused cross-user data exposure in a distributed system

https://www.orchenginex.com/publications/github-43-second-failover
1•Mlondy•1m ago•0 comments

I Built a Wordle for FFmpeg

https://ffmpuzzle.com
1•lbostral•2m ago•1 comments

Reqlog – live HTTP request dashboard for NestJS/Express/Fastify, zero config

https://github.com/FirasLatrech/reqlog
1•firaslatrach•3m ago•0 comments

Ask HN: What AI can you use for personal video editing?

1•gneray•5m ago•0 comments

OpenAI to Cut Back on Side Projects in Push to 'Nail' Core Business

https://www.wsj.com/tech/ai/openai-chatgpt-side-projects-16b3a825
3•megacorp•5m ago•0 comments

Attackers using IPv4-mapped IPv6 addresses to possibly obfuscate their attack

https://isc.sans.edu/diary/32804
1•speckx•7m ago•0 comments

Physical AI Models for Healthcare Robotics

https://huggingface.co/blog/nvidia/physical-ai-for-healthcare-robotics
1•ibobev•7m ago•0 comments

Silicon Valley's "Pronatalists" Killed WFH. The Strait of Hormuz Brought It Back

https://www.governance.fyi/p/silicon-valleys-pronatalists-killed
3•bigbobbeeper•7m ago•0 comments

Derek Lowe's "Things I Won't Work with" Series in RSS

https://www.science.org/action/showFeed?ui=0&mi=eodfiz&type=search&feed=rss&query=%2526ConceptID%...
1•shlip•7m ago•1 comments

Digital Twin of a Cell Tracks Its Life Cycle Down to the Nanoscale

https://singularityhub.com/2026/03/16/digital-twin-of-a-cell-tracks-its-entire-life-cycle-down-to...
1•Brajeshwar•7m ago•0 comments

Lower your warehouse costs via DuckDB transpilation

https://maxhalford.github.io/blog/warehouse-cost-reduction-quack-mode/
1•Lemaxoxo•9m ago•0 comments

Beta Users Problem

https://betaswapio.vercel.app/
1•awightman•10m ago•1 comments

MI5 to pay compensation to woman abused by neo-Nazi agent

https://www.bbc.co.uk/news/articles/cg5nrq287m4o
1•pera•10m ago•0 comments

Typenix: Full typing for Nix based on TypeScript

https://github.com/ryanrasti/typenix
1•birdculture•11m ago•0 comments

UK Racket meet-up (London) Tuesday 17 March 7:30pm at The City Pride

2•spdegabrielle•11m ago•0 comments

Global chip supply chain under threat as US-Iran conflict enters third week

https://www.tomshardware.com/tech-industry/global-chip-supply-chain-under-threat-as-us-iran-confl...
1•speckx•14m ago•0 comments

Payment provider Nexi cancels FSFE donors subscriptions

https://fsfe.org/news/2026/news-20260316-01.html
1•cbaleanu•14m ago•0 comments

The Ocean of Numbers: How India Shaped the Way We Calculate [video]

https://www.youtube.com/watch?v=sa2kN-li984
2•rramadass•16m ago•1 comments

Pakistan air strike kills at least 100 at Kabul drug rehab centre

https://www.bbc.com/news/articles/c4g8n7e0l40o
2•mhb•17m ago•0 comments

Show HN: Fabro – The open source dark software factory

https://github.com/fabro-sh/fabro
4•brynary•17m ago•1 comments

EU: 'Digital Omnibus' reflects key lobbying messaging from large tech companies

https://www.business-humanrights.org/en/latest-news/eu-digital-omnibus-reflects-key-lobbying-mess...
2•latexr•17m ago•0 comments

Len Deighton obituary: How a cookery cartoonist became a master spy writer

https://www.bbc.co.uk/news/articles/cervgrvekxzo
1•mellosouls•22m ago•0 comments

Should You Still Major in Computer Science?

https://www.aei.org/op-eds/should-you-still-major-in-computer-science/
1•jyunwai•23m ago•0 comments

Mystery orcas from afar thrill Seattle-area whale watchers

https://www.kuow.org/stories/mystery-orcas-thrill-seattle-area-whale-watchers
1•speckx•23m ago•0 comments

Show HN: Drakkar.one – Google Maps embed replacement, no API keys, GDPR-ready

https://drakkar.one/
1•d0min0•24m ago•0 comments