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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•8mo 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: Drop The Adverb – Replace weak verb+adverb pairs with stronger verbs

https://droptheadverb.com
1•ClozeLine•2m ago•0 comments

Tech for Iran – An open letter from founders, investors, and operators

https://www.techforiran.com/
1•knrz•6m ago•0 comments

Jj Tug

https://shaddy.dev/notes/jj-tug/
1•birdculture•6m ago•0 comments

Elasticsearch Was Never a Database

https://www.paradedb.com/blog/elasticsearch-was-never-a-database
1•jamesgresql•13m ago•1 comments

Optional HTML: Everything You Need to Know

https://meiert.com/blog/optional-html/
1•alwillis•13m ago•0 comments

Why is example.com using Cloudflare

1•1vuio0pswjnm7•14m ago•0 comments

BYD's cheapest electric cars to have Lidar self-driving tech

https://thedriven.io/2026/01/11/byds-cheapest-electric-cars-to-have-lidar-self-driving-tech/
6•senti_sentient•15m ago•0 comments

Show HN: Chr2 – consensus for side effects (exactly-once is a lie)

https://github.com/abokhalill/chr2
1•yousef06•17m ago•0 comments

Simonyi Hungarian notation in early Mac

https://folklore.org/Hungarian.html
2•stmw•18m ago•0 comments

Texas A&M Bans Philosophy Prof. From Teaching Plato Because of "Gender Ideology"

https://www.erininthemorning.com/p/texas-a-and-m-bans-philosophy-prof
6•sapphicsnail•19m ago•0 comments

Wing and Walmart expand drone delivery to 150 new stores coast to coast

https://wing.com/news/wing-walmart-expand-drone-delivery-coast-to-coast
1•xnx•19m ago•0 comments

The struggle of resizing windows on macOS Tahoe

https://noheger.at/blog/2026/01/11/the-struggle-of-resizing-windows-on-macos-tahoe/
6•happosai•20m ago•0 comments

Slow iOS 26 Adoption

https://mjtsai.com/blog/2026/01/09/slow-ios-26-adoption/
4•SoKamil•22m ago•0 comments

Survey on integrating large language models with knowledge-based methods (2025)

https://www.sciencedirect.com/science/article/pii/S0950705125005490
1•mpweiher•22m ago•0 comments

Show HN: Pi-coding-agent: Emacs front end for AI-assisted coding

https://github.com/dnouri/pi-coding-agent
1•dnouri•27m ago•0 comments

How to Fire Your Boss (1970)

https://theanarchistlibrary.org/library/bossbusters-how-to-fire-your-boss
2•Tomte•28m ago•0 comments

Nat20: A Dungeons and Dragons 5th Edition combat engine

https://github.com/MadsWedendahlKruse/nat20
1•homarp•28m ago•1 comments

DHS restricts congressional visits to ICE facilities in Minneapolis

https://www.npr.org/2026/01/11/nx-s1-5673949/dhs-restricts-congressional-visits-to-ice-facilities...
5•mickle00•28m ago•0 comments

Git considers SHA-256, Rust, LLMs, and more (2025)

https://lwn.net/Articles/1042172/
1•shepherdjerred•30m ago•0 comments

Why Intelligence Doesn't Improve Reasoning

https://dianoiaprotocol.substack.com/p/why-intelligence-doesnt-improve-rationality
1•ParadoxHaze•32m ago•0 comments

Pico GPU is a 300KB memory GPU intended to learn and experiment with shaders

https://ncannasse.github.io/picogpu/
1•generichuman•32m ago•0 comments

"There Are Two Possible Futures for American Science."

https://issues.org/american-science-simons-spergel-interview/
4•mosesbp•34m ago•0 comments

SpecificProxy: Proxy Using a Specific IP

https://github.com/danthegoodman1/specificproxy
1•dangoodmanUT•35m ago•2 comments

Guide for Newcomers – SCP Foundation

https://scp-wiki.wikidot.com/guide-for-newcomers
1•Tomte•36m ago•0 comments

A Conversation with Ken Williams (Sierra Online / Cave) [video]

https://www.youtube.com/watch?v=2KRK0nVoodE
1•sgt•43m ago•0 comments

API Impact Tracker – Know which API clients you'll break before deploying

https://github.com/aj9704845-code/api-impact-tracker
1•PeterDS•43m ago•2 comments

Annual Reboot: 52 Questions to Reflect and Reset

https://elacrain.com/writing/annual-review/
1•simonebrunozzi•45m ago•0 comments

1D-Pong Game at 39C3

https://github.com/ogermer/1d-pong
1•oger•45m ago•1 comments

Ask HN: Is there a point to maintaining distant connections on social media?

2•Desafinado•47m ago•2 comments

70 person relay of Super Mario 64 [video]

https://www.youtube.com/watch?v=r-VFPEh59k4
2•HelloUsername•47m ago•0 comments