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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•11mo 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!

OSTree Overview – Ostreedev/Ostree

https://ostreedev.github.io/ostree/introduction/
1•ankitg12•5m ago•0 comments

Ask.com, home of search butler Jeeves closes as conversational search comes back

https://www.theregister.com/2026/05/04/askjeeves_closes/
1•beardyw•5m ago•0 comments

CARA 2.0 – "I Built an Better Robot Dog"

https://www.aaedmusa.com/projects/cara2
1•hakonjdjohnsen•5m ago•0 comments

Rootshell – The terminal, reimagined for Apple platforms

https://rootshell.com/
1•theshrike79•6m ago•0 comments

Allegedly Nintendo Stopped Selling to Amazon After Being Asked to Break the Law

https://kotaku.com/reggie-fils-aime-says-nintendo-stopped-selling-to-amazon-after-being-asked-to-...
2•croes•6m ago•0 comments

Call JavaScript functions across thread boundaries like they were local

https://www.npmjs.com/package/achi-rpc
1•stiles11•9m ago•0 comments

Golang Tutorial: Find and fix vulnerable dependencies with govulncheck

https://go.dev/doc/tutorial/govulncheck
1•l1am0•10m ago•0 comments

The Myth of RAM, part I (2014)

https://www.ilikebigbits.com/2014_04_21_myth_of_ram_1.html
1•downbad_•11m ago•1 comments

The Back-end for Front-end Pattern (BFF) (2015)

https://philcalcado.com/2015/09/18/the_back_end_for_front_end_pattern_bff.html
1•locknitpicker•14m ago•0 comments

AWS Lambda Cold Start: Java, Python, Go, Rust

https://medium.com/@yalovoy/four-million-lambda-invokes-across-python-java-rust-and-go-5b9218f64563
1•zero-ground-445•17m ago•0 comments

Ping Poetics (2009)

https://electronicbookreview.com/publications/ping-poetics/
1•jruohonen•18m ago•0 comments

Package and distribute Electron apps with "auto update" support

https://www.electron.build/index.html
2•ankitg12•27m ago•0 comments

Banger: One-command dev sandboxes on Firecracker microVMs

https://git.thaloco.com/thaloco/banger
1•thunderbong•28m ago•0 comments

Vampires, prisoners, and late-stage capitalism

https://gagliardoni.net/#20260504_vampire_capitalism
2•tomgag•35m ago•0 comments

AI Coding Models You Can Run Locally on Consumer Hardware

https://firethering.com/best-coding-models-consumer-hardware/
1•steveharing1•37m ago•1 comments

Microelectrode Techniques: The Plymouth Workshop Handbook

https://plymsea.ac.uk/id/eprint/7954/
2•teleforce•41m ago•0 comments

DSPy – Programming – not prompting – LMs

https://dspy.ai/
1•sakompella•41m ago•0 comments

Text Files as a User Interface

https://ratfactor.com/cards/text-files-as-ui
1•ingve•49m ago•0 comments

Pinecone Nexus: The Knowledge Engine for Agents

https://www.pinecone.io/blog/knowledge-infrastructure-for-agents/
1•berlianta•53m ago•0 comments

Designing Microkernel IPC

https://seiya.me/blog/microkernel-ipc-design
1•ingve•54m ago•1 comments

Evolving the Android and Chrome Vulnerability Reward Programs for the AI Era

https://bughunters.google.com/blog/evolving-the-android-chrome-vrps-for-the-ai-era
3•tjek•56m ago•0 comments

Clawback: Safer OpenClaw Upgrade Rehearsals

https://github.com/haishmg/Clawback
1•princeharry86•57m ago•0 comments

YouTube Transcript API

https://youtubetranscript.us/
1•nikitarogers•1h ago•0 comments

Electrophysiology

https://en.wikipedia.org/wiki/Electrophysiology
2•teleforce•1h ago•0 comments

Strawberry Browser

https://strawberrybrowser.com/
1•simonebrunozzi•1h ago•0 comments

Ask HN: How long will the Hormuz straight be closed?

1•roschdal•1h ago•0 comments

Clicks Communicator: mobile communicator designed for doing, not doomscrolling

https://clicksphone.com/communicator
2•giuliomagnifico•1h ago•1 comments

Show HN: See how much you spend per AI agent

https://wakatime.com/ai
1•welder•1h ago•0 comments

Feds Fine Durham Energy Efficiency Co $722M

https://www.theassemblync.com/news/business/american-efficient-ferc-durham-fine/
1•ChuckMcM•1h ago•1 comments

Kenneth Lane Thompson, 1983 ACM Turing Award Recipient [video]

https://www.youtube.com/watch?v=309siTvApbY
1•KnuthIsGod•1h ago•0 comments