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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!

Show HN: Outlier, AI without the data center, private and offline on your Mac

https://outlier.host/
1•ur_dad_matt•2m ago•0 comments

Finding a Vulnerability in Star Wars Episode I: Racer

https://www.synacktiv.com/en/publications/star-wars-episode-i-racer
1•frostbyte7•4m ago•0 comments

SafeCurves: Choosing safe curves for elliptic-curve cryptography

https://safecurves.cr.yp.to/
1•cluckindan•5m ago•0 comments

The answer to "why is my £775k new build flat so small and crappy?"

https://twitter.com/BernoulliDefect/status/2120121493040570704
1•MrBuddyCasino•5m ago•0 comments

.web domain registration expected to open on April 6, 2027

https://newgtlds.icann.org/en/program-status/sunrise-claims-periods
1•aofeisheng•9m ago•0 comments

Pulse width modulation on MacBook Pro with PROLED

https://appleinsider.com/articles/26/11/10/if-youre-getting-dizzy-using-proled-macbook-pro-you-ar...
1•clumsysmurf•9m ago•0 comments

Open Source HTAP with DBTrail and Percona Server for MySQL

https://www.percona.com/blog/heavy-mysql-reports-in-seconds-open-source-htap-with-dbtrail-and-per...
2•nethalo•9m ago•0 comments

Show HN: Super Agent – Your 7*24 Always-On Agent Team

https://super-agent.team/
1•niliu123•9m ago•0 comments

TSMC Approves $1B AI Investment

https://www.macrumors.com/2026/11/11/tsmc-approves-ai-investment/
1•tosh•12m ago•0 comments

Open research, stronger privacy: Making Firefox users harder to fingerprint

https://blog.mozilla.org/security/2026/11/10/open-research-stronger-privacy-making-firefox-users-...
3•Vinnl•12m ago•0 comments

Self-Building Labs

https://self-building-labs.github.io/
1•zoizoi•13m ago•0 comments

Show HN: Kodelyth ECC – 71 AI agents and MCP and 55% token cuts for Claude Code

https://ecc.kodelyth.com
2•sifxprime•16m ago•0 comments

Australia considers criminal penalties for rogue AI in wake of OpenAI hack

https://www.bbc.co.uk/news/articles/cmp3g37l566po
3•rwmj•21m ago•1 comments

ClankTalk – Sandboxed Scripting for Agents

https://clank.talk/
2•renerick•25m ago•0 comments

Can a Linear Program Do Weight-Space Programming?

https://nathan.rs/posts/weight-space-lp/
4•emschwartz•26m ago•0 comments

Ponovo-sysinfo – a UEFI app to identify hardware (made for refurb, repair shops)

https://gitlab.com/ponovo/Sysinfo
2•marxo•26m ago•0 comments

We need more goat sacrifices

https://www.experimental-history.com/p/we-need-more-goat-sacrifices
3•iamnothere•26m ago•0 comments

Change in Opening Engineering Roles over the Past Year

https://twitter.com/lennysan/status/2120274852766703938
1•MrBuddyCasino•26m ago•0 comments

Notes on Mathematics for Engineers (1959) [pdf]

https://websites.umich.edu/~ners311/CourseLibrary/MathNotes.pdf
2•the-mitr•30m ago•0 comments

Portals

https://portals-endless-worlds.netlify.app/
2•andybak•31m ago•0 comments

Sony Wins "Hall of Shame" Award for Killing Discs and Being All Around Awful

https://www.thegamer.com/sony-choice-hall-of-shame-shonky-award-2026-killing-discs/
2•robtherobber•37m ago•0 comments

Show HN: Inp-Analyser – MIT CLI That Diagnoses Interaction to Next Paint

https://inp-analyser.franzai.com/
2•franze•38m ago•0 comments

GeekyAnts reports No. 1 ranking among California app developers on Clutch

https://geekyants.com/blog/geekyants-ranks-no-1-among-app-development-companies-in-california-on-...
2•Harish_0089•38m ago•0 comments

State of the tech job market: late 2026

https://www.lennysnewsletter.com/p/state-of-the-tech-job-market-late
2•davedx•38m ago•1 comments

Show HN: Faraway – Physically accurate solar system, time travel 1900–2100

https://faraway.space/
4•qianyiyu•39m ago•0 comments

The coin-flipping trick that counts the Internet

https://www.scientificamerican.com/article/the-coin-flipping-trick-that-counts-the-internet/
2•sohkamyung•40m ago•0 comments

Show HN: Aiproxy – Redact PII locally before it reaches Claude/OpenAI

https://github.com/cucooOnGithub/aiproxy
2•cucoo•40m ago•0 comments

Grok API text watermarking is now 'off' by default

https://docs.x.ai/developers/advanced-api-usage/watermarking
2•apalerwuss•45m ago•1 comments

How OpenAI, Canva and Spotify made slow CI steps up to 20x faster

https://berrybox.io/playbooks
2•chiragasarpota•45m ago•0 comments

Next-Level Benchmarking Overfitting – Thomas Neumann

http://databasearchitects.blogspot.com/2026/11/next-level-benchmarking-overfitting.html
3•artrax•46m ago•0 comments