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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!

Encryption Is Getting Squeezed from All Sides

https://www.wired.com/story/kernel-panic-encryption-is-getting-squeezed-from-all-sides/
1•ent101•7m ago•0 comments

Space Shuttle Endeavour Transport

https://www.cordobacorp.com/move-of-the-space-shuttle-endeavour/
1•thunderbong•13m ago•0 comments

Algorithmic Similarity and the Limits of Proof: Facial Recognition

https://medium.com/@smoking2man/algorithmic-similarity-and-the-limits-of-proof-facial-recognition...
1•Aldus551•18m ago•0 comments

The Cycle of New Software: On Operative Simulacra

https://szymon-wilczek.me/writings/the-cycle-of-new-software/
1•signa11•18m ago•0 comments

'What the hell did this?': The orca brothers preying on great white sharks

https://www.bbc.com/future/article/20261015-sharks-washed-up-one-after-another-after-another-why-...
1•jazali•19m ago•0 comments

Want to Release Projects Easily?

https://cx-shipd.netlify.app
1•CX-Designs•28m ago•0 comments

Anthropic turns to lawyers to help AI agents strike deals

https://www.ft.com/content/f7c26ac0-f5f2-443a-86b2-39d62f7920a9
1•thm•30m ago•0 comments

Show HN: Parents Inbox – Communication Guide for Schools

https://helptheparents.org/
1•sxates•33m ago•0 comments

TurboScribe AI: Free video to text and audio to text converter

https://www.turboscribeai.org/
1•wsm123456•38m ago•0 comments

China startup demoes prototype EUV light source, still years away from viability

https://www.tomshardware.com/tech-industry/semiconductors/china-startup-demoes-prototype-euv-ligh...
1•rguiscard•39m ago•0 comments

PwnEscape: Guest-to-Host KVM Escape (CVE-2026-99999)

https://pwn.ai/blog/pwnescape
1•taubek•40m ago•0 comments

I made an OS kernel in Rust that runs in the browser and on an actual computer

https://github.com/avycado13/webos
1•avycado13•47m ago•0 comments

LLMs are inside fabs, so why aren't they solving core problems?

https://www.waferpilot.xyz/resources/fab-llm-yield-reliability/
2•mangohaha•51m ago•0 comments

Telegram Web A: Telegram's Zero-Dependency Official Web Client

https://github.com/Ajaxy/telegram-tt
2•theanonymousone•1h ago•0 comments

Show HN: Pbschema-lens – static doc generator for protobuf

https://github.com/ymmt2005/pbschema-lens
1•ymmt2005•1h ago•0 comments

The game industry is broken – can we fix it?

https://knowledge.edge-online.com/p/the-game-industry-is-broken-can-we-fix-it-tim-sweeney-edge-crash
11•mellosouls•1h ago•2 comments

World's Timekeepers Vote to Eliminate the Leap Second

https://www.smithsonianmag.com/smart-news/its-official-timekeepers-have-gotten-rid-of-the-leap-se...
1•signa11•1h ago•0 comments

Fast approximation algorithms for knapsack problems (1977)

https://ieeexplore.ieee.org/document/4567944
1•vismit2000•1h ago•0 comments

Dot factory – a spec to describe complex (agentic) workflows

https://redbeardlab.github.io/dotFactory/
1•siscia•1h ago•0 comments

Matthew Prince on why Cloudflare offers a free version and always will

https://webmasters.stackexchange.com/questions/88659/how-can-cloudflare-offer-a-free-cdn-with-unl...
32•thatslast•1h ago•12 comments

Mobile Application GPU Optimization Guide

https://arm-software.github.io/magog/
1•matt_d•1h ago•0 comments

Rahn Curve

https://en.wikipedia.org/wiki/Rahn_curve
1•baxtr•1h ago•0 comments

Does moving a GPU server's request loop into the kernel save CPU?

https://eunomia.dev/blog/2026/10/17/bpf-gpu-server/
1•thatslast•1h ago•0 comments

Wing Commander 3 is getting a remaster

https://www.pcgamer.com/games/sim/it-looks-like-wing-commander-3-is-getting-a-remaster-after-ea-p...
3•jbm•1h ago•0 comments

AI Slop? Nay, AI Gourmet

https://octomon.dev/blog/ai-slop-and-ai-gourmet/
1•securitypedant•1h ago•1 comments

A Mole Infiltrated the Highest Ranks of American Militias

https://www.propublica.org/article/ap3-oath-keepers-militia-mole
50•georgecmu•1h ago•4 comments

Du said Chrome was using 67 GB on my Mac. APFS said 2

https://dev.to/md_ayanbag_03a42545b17ac/du-said-chrome-was-using-67-gb-on-my-mac-apfs-said-2-here...
2•mdayan896•1h ago•2 comments

NextMove Berkeley

https://www.eventbrite.com/e/2003559456268/preview/?aff=oddtdtcreator
1•sianazari•1h ago•1 comments

Notes on the Complex Roots of Unity

https://eli.thegreenplace.net/2026/notes-on-the-complex-roots-of-unity/
3•sks_15•1h ago•0 comments

Refurb weekend II: Alpha Micro Eagle 300 and friends

http://oldvcr.blogspot.com/2026/10/refurb-weekend-ii-alpha-micro-eagle-300.html
1•classichasclass•1h ago•0 comments