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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: Outbid.lol, but you need an EU VAT number to bid

https://overbid.eu/
1•apancyborg•33s ago•0 comments

French burglar used artificial intelligence to locate Canberra target in heist

https://www.abc.net.au/news/2026-09-07/burglary-canberra-home-french-nationals-luxury-goods/10712...
1•aussieguy1234•1m ago•0 comments

KitGrade, 34 SaaS starter kits scored on evidence you can re-check

https://kitgrade.kynth.studio
2•kyisaiah47•2m ago•0 comments

Weird Little Guys of FOSS

https://drewdevault.com/weird-guys/
2•marvinborner•4m ago•0 comments

The Great Barrier Reef refuses to die on schedule

https://www.latimes.com/opinion/story/2026-09-06/great-barrier-reef-refuses-to-die
2•EvgeniyZh•6m ago•0 comments

Show HN: Interactive map of public transport in Great Britain and Ireland

https://benmandrew.com/wayfare/
2•benmandrew•7m ago•0 comments

VMware migration reduces Tottenham Hotspur's licensing fees by 85 percent

https://arstechnica.com/information-technology/2026/09/vmware-migration-reduces-tottenham-hotspur...
2•joozio•8m ago•0 comments

Early Data Indicates an A.I.-Generated Drug Could Slow Aging

https://www.nytimes.com/2026/09/07/science/ai-generated-drug-longevity.html
2•edward•9m ago•0 comments

PhDino Calc 95 – a Windows 95-styled engineering calculator suite

https://phdino.com/
2•andre1526•10m ago•0 comments

AMD Working to "Push Rust Deep into the GPU Stack"

https://www.phoronix.com/news/AMD-Rust-Deep-Into-GPU-Stack
2•pjmlp•10m ago•0 comments

Show HN: AdDeck – AdMob, Adsense and mediation revenue on one screen

https://play.google.com/store/apps/details?id=com.eltacrew.addeck&hl=en_US
2•eltacrew•11m ago•0 comments

From a Chocolate Wrapper to Concurrent InnoDB Page Splits

https://mariadb.org/from-a-chocolate-wrapper-to-concurrent-innodb-page-splits/
2•birdculture•13m ago•0 comments

Tencent/Teamai-CLI: Make Every Team AI Native

https://github.com/Tencent/teamai-cli
2•doppp•17m ago•0 comments

A faster way to convert a timestamp to Hour, Min, Sec

https://www.benjoffe.com/fast-time-of-day
2•benjoffe•22m ago•0 comments

Apple Plans to Squeeze More Revenue from the App Store

https://www.macrumors.com/2026/09/07/apple-squeeze-more-revenue-from-app-store/
2•layer8•23m ago•0 comments

Show HN: High-Performance Rust Implementation of Optuna

https://medium.com/optuna/announcing-rustuna-cc82a6815bf7
3•c-bata•23m ago•1 comments

Meditations on Moloch

https://www.slatestarcodexabridged.com/Meditations-On-Moloch
1•sensanaty•26m ago•0 comments

Timing Is Everything: The Terrence Tao Effect

https://nonlineartransform.substack.com/p/ai-swarms-timing-is-everything
1•program_whiz•27m ago•0 comments

Tiny $70 Xteink X3 e-reader puts Silicon Valley to shame

https://www.theatlantic.com/technology/2026/09/xteink-e-reader-best-technology-years/688539/
2•samizdis•28m ago•0 comments

I Analyzed 4.5 Years of GitHub Incidents. Here Is What Changed

https://mljar.com/blog/github-incidents-analysis/
1•pplonski86•29m ago•0 comments

Motivating Myself for Exercise by Arbitrarily Withholding Things I Desire

https://blog.klungo.no/2026/09/04/motivating-myself-for-exercise-by-arbitrarily-withholding-rewards/
1•danielskogly•30m ago•0 comments

The jobs apocalypse is postponed. An AI jobs boom is here

https://www.economist.com/finance-and-economics/2026/09/04/the-jobs-apocalypse-is-postponed-an-ai...
2•MrBuddyCasino•31m ago•0 comments

A fitness challenge for Rust developers

https://rep.rs/
1•orhunp_•31m ago•0 comments

Man gets 'Flocked' by sheriff's dept. after filing complaint against deputy

https://www.tmj4.com/news/local-news/in-your-community/waukesha-county/lawsuit-waukesha-county-ma...
3•pseudolus•34m ago•0 comments

Show HN: Hazzel – terminal coding agent, BYOK, undo-everything

https://github.com/mukundzha/hazzel
1•mukundzha6•36m ago•0 comments

K2 Horizon

https://mbzuai.ac.ae/news/mbzuais-institute-of-foundation-models-launches-k2-horizon-the-worlds-l...
2•andy99•36m ago•0 comments

The Untold Pre-History of 9/11

https://nationalinterest.org/feature/the-untold-pre-history-of-9-11
1•baud147258•37m ago•0 comments

10-task GLM 5.3 harness bench: Claude, OpenCode, pi, zcode, Hermes and 3code

https://capocasa.dev/10-task-glm-5-3-harness-bench-claude-opencode-pi-zcode-hermes-and-3code
7•capocasa•37m ago•0 comments

GraphMemix: Query-Aware Evidence Forests for Long-Term Multimodal Agent Memory

https://twitter.com/MemoraX_AI/status/2095038508331401668
2•IreneAI•39m ago•0 comments

Claude Fable 5.1 Solves the Cyphral Distich

https://www.vals.ai/blogs/fable-solves-cyphral-distich
2•worldvoyageur•40m ago•0 comments