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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•10mo 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!

1M context is now generally available for Opus 4.6 and Sonnet 4.6

https://claude.com/blog/1m-context-ga
1•meetpateltech•46s ago•0 comments

Show HN: I Made a PS1 Static Recompiler with No Prior Experience (and Claude)

https://1379.tech/i-built-a-ps1-static-recompiler-with-no-prior-experience-and-claude-code/
1•Gamemaster1379•1m ago•0 comments

Yes, and

https://en.wikipedia.org/wiki/Yes,_and_...
1•lucidplot•1m ago•0 comments

Einstein's Riddle – Who owns the fish?

https://www.numericana.com/answer/recreational.htm#einstein5
1•v8xi•2m ago•0 comments

The Cost of Delegation

https://variantsystems.io/blog/cost-of-delegation
1•vipulbhj•2m ago•0 comments

Webhook Architecture – Design Pattern

https://beeceptor.com/docs/webhook-feature-design/
1•ankit84•2m ago•0 comments

Show HN: TheDayAfter – open-source addiction recovery tracker

https://thedayafter.app/
1•walky•2m ago•0 comments

Claude Opus 4.6 now ships with 1M context by default

https://twitter.com/alasano/status/2032505230386958546
2•alasano•2m ago•1 comments

Scanner Raises Series A Led by Sequoia Capital

https://scanner.dev/blog/scanner-raises-series-a-led-by-sequoia-capital
1•eatonphil•5m ago•0 comments

Vibe Crafting: spec and test-driven agent development

https://github.com/scosman/vibe-crafting
1•scosman•6m ago•0 comments

Who Uses AI in Congress?

https://nicholasdecker.substack.com/p/who-uses-ai-in-congress
1•speckx•6m ago•0 comments

50x Faster Post-Training

https://www.workshoplabs.ai/blog/post-training-50x-faster
2•addiefoote8•7m ago•0 comments

Show HN: RepoCrunch – CLI to analyze GitHub repos

https://github.com/kimwwk/repocrunch
1•chillkim•8m ago•1 comments

How Russia's new elite hit squad was compromised by Google Translate

https://theins.press/en/inv/290235
3•dralley•10m ago•0 comments

Notes from the trough of sorrow: why we killed our own product

1•timshell•11m ago•0 comments

Q&A: Why does gas set the price of electricity – and is there an alternative?

https://www.carbonbrief.org/qa-why-does-gas-set-the-price-of-electricity-and-is-there-an-alternat...
2•mariuz•11m ago•0 comments

Rescreen: Give agents control of your screen, securely

https://github.com/ygwyg/rescreen
1•handfuloflight•11m ago•0 comments

Depot Raised a $10M Series A

https://depot.dev/blog/depot-raises-series-a
2•eatonphil•13m ago•0 comments

How Predictable Are the Oscars?

https://futuresearch.ai/oscars/
6•nbosse•16m ago•2 comments

Revealed: Face of 75,000-year-old female Neanderthal from cave

https://www.cam.ac.uk/stories/shanidar-z-face-revealed
4•thunderbong•17m ago•0 comments

AI agent 'lobster fever' grips China despite risks

https://techxplore.com/news/2026-03-ai-agent-lobster-fever-china.html
2•Brajeshwar•17m ago•0 comments

LDP: Identity-Aware Routing for Multi-Agent LLMs – 37% Less Tokens

https://arxiv.org/abs/2603.08852
1•prakashsunil•18m ago•0 comments

When code is free, research is all that matters

https://twitter.com/amytam01/status/2031072399731675269
1•gmays•18m ago•0 comments

Scaling ClickHouse to petabytes of AI observability data

https://langfuse.com/blog/2026-03-10-simplify-langfuse-for-scale
3•marcklingen•20m ago•0 comments

Self-Driving Corporations (2020)

https://interconnected.org/home/2020/11/17/self_driving_corporations
1•alcazar•20m ago•0 comments

The Colorado River Does Not Reach 2030

https://drlennecefer.substack.com/p/the-colorado-river-does-not-reach
3•ThemalSpan•20m ago•0 comments

I built a GDPR analytics alternative to Google Analytics

https://eurometrics.eu
1•snesmachny•21m ago•0 comments

Lost in Backpropagation: The LM Head Is a Gradient Bottleneck

https://arxiv.org/abs/2603.10145
1•famouswaffles•21m ago•0 comments

The web in 1000 lines of C

https://maurycyz.com/projects/tinyweb/
1•maurycyz•22m ago•0 comments

Treat Interfaces as Organizational Treaties

1•davidvartanian•23m ago•0 comments