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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•9mo 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!

Josephus and Jesus: New Evidence for the One Called Christ

https://academic.oup.com/book/60034
1•danielam•29s ago•0 comments

Show HN: Flare – AI-agent social network built on short videos

https://www.heyflare.app/blog/introducing-flare
1•JoanMDuarte•33s ago•0 comments

GUID / UUID V7 – Unix Time-Ordered Identifier

https://www.guidsgenerator.com/wiki/uuid-v7
1•BrunoVT1992•46s ago•1 comments

Milan Olympics vs. local reality: armed protests

https://www.aljazeera.com/news/2026/2/8/italys-meloni-condemns-anti-olympics-protesters-in-milan
1•haebom•1m ago•0 comments

Free AI Image Generator: All Models in One Place – TryImgAI

https://tryimgai.com/
1•chengai1106•1m ago•0 comments

Extractional AI as Opposed to Conversational AI

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

Wave Function Collapse Playground in WebAssembly

https://wfc-wa.onrender.com/?p=j_Ckj_Ck____9tMt________j_CkY0UsY0Us9tMt________j_CkY0UsY0Us9tMt__...
1•preciz•2m ago•1 comments

A Ralph Loop for Reading: Beating GPT 5.2 with a 4k Context Window (and 4 GPUs)

https://stevehanov.ca/blog/a-ralph-loop-for-reading-beating-gpt-52-with-a-4k-context-window-and-4...
1•smhanov•3m ago•0 comments

Show HN: Built a cashflow tool for freelancers that tells them when NOT to spend

https://ankenboard.com/
1•josemgp•3m ago•0 comments

Agentic Image Generation

https://academy.dair.ai/blog/agentic-context-engineering
1•omarsar•6m ago•0 comments

Show HN: Logarete – Historical thinkers debate each other via RAG

https://logarete.com
1•idlee•8m ago•1 comments

Rice Theory: Why Eastern Cultures Are More Cooperative

https://www.npr.org/sections/thesalt/2014/05/08/310477497/rice-theory-why-eastern-cultures-are-mo...
2•thunderbong•10m ago•0 comments

FFoliobase, a portfolio builder for freelance writers

https://foliobase.vercel.app
1•oasadiq•10m ago•1 comments

Researchers will move to France from US following bid to lure talent

https://www.nature.com/articles/d41586-026-00405-2
2•sohkamyung•11m ago•1 comments

Lightweight Memory Construction with Dynamic Evolution for LLM Agents

https://arxiv.org/abs/2601.14287
2•PaulHoule•14m ago•0 comments

Jaspr – Web Framework for Dart

https://jaspr.site
1•mvac•15m ago•0 comments

Show HN: Energy Based Model solving nonograms

https://github.com/hirako2000/latent-energy
1•hirako2000•15m ago•0 comments

The OWASP LLM Top: A Practical Attack Guide (with 122 real attack techniques)

1•manuelnd•17m ago•0 comments

Show HN: Vibe-coded AI video clipper that runs in the browser

https://github.com/imgly/videoclipper
1•buss_jan•19m ago•0 comments

JavaScript Math Bug

https://codepen.io/Lucian-Marin-the-bashful/pen/WbxYPWo
1•lcnmrn•21m ago•0 comments

Ask HN: Am I holding it wrong?

1•notpachet•21m ago•0 comments

Bitchat – decentralized peer-to-peer messaging

https://en.wikipedia.org/wiki/Bitchat
3•bilsbie•23m ago•0 comments

FreeBSD Home NAS, part 10: monitoring with VictoriaMetrics and Grafana

https://rtfm.co.ua/en/freebsd-home-nas-part-10-monitoring-with-victoriametrics-and-grafana/
1•todsacerdoti•24m ago•0 comments

Edinburgh councillors pull the plug on 'green' AI datacenter

https://www.theregister.com/2026/02/10/edinburgh_green_ai_datacenter/
3•Brajeshwar•24m ago•0 comments

Show HN: SynthForge - data modeler/generator for all databases

https://synthforge.io
2•dllrr•25m ago•0 comments

Show HN: Distr 2.0 – A year of learning how to ship to customer environments

https://github.com/distr-sh/distr
1•louis_w_gk•25m ago•0 comments

FacturaView – View Spanish e-invoices without Java or signup

https://www.facturaview.es/
2•e_pascual_otero•28m ago•1 comments

Errors in Database Systems, Eventual Consistency, and the CAP theorem

https://cacm.acm.org/blogcacm/errors-in-database-systems-eventual-consistency-and-the-cap-theorem/
2•onurkanbkrc•30m ago•0 comments

Show HN: Valk – new programming language with a stateful GC

https://github.com/valk-lang/valk
2•lorenzv•31m ago•2 comments

A Critical AI Niche Is Dominated by One Little-Known Japanese Company

https://www.wsj.com/tech/a-critical-ai-niche-is-dominated-by-one-little-known-japanese-company-d9...
2•throw0101c•33m ago•1 comments