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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!

A Harness in a single file: Agent skills as an evolving REPL module

https://deepclause.substack.com/p/a-harness-in-a-single-file-agent
1•schmuhblaster•1m ago•0 comments

Ledger Pauses Reseller Sales After $86M Drain Claims

https://finance.yahoo.com/markets/crypto/articles/ledger-pauses-reseller-sales-86-135100065.html
1•wslh•3m ago•0 comments

US company lobbying spend vs. market cap

https://www.kadoa.com/congress/insights/lobbying-vs-market-cap
1•hubraumhugo•3m ago•0 comments

Show HN: APIblaze – Serverless MCP and API gateway with everything built in

https://www.apiblaze.com
1•jayjaychicago•3m ago•0 comments

A nonsense phrase of shady provenance makes the rounds

https://retractionwatch.com/2025/02/10/vegetative-electron-microscopy-fingerprint-paper-mill/
1•adunk•4m ago•0 comments

High-quality data is the best compute multiplier

https://www.datologyai.com/blog/text-curation-oct-2026
3•hurrycane•5m ago•0 comments

Eval Engineering

https://www.splunk.com/en_us/blog/learn/eval-engineering.html
1•saikatsg•7m ago•1 comments

Show HN: StackCheck – Local-first tech stack intelligence and salary benchmarks

https://github.com/haydermuhib/StackCheck
1•haydermuhib•7m ago•0 comments

Which Programming Language Can Handle the Most Users on a $12 Server? [video]

https://www.youtube.com/watch?v=sQXFhh_PiG4
1•ayoisaiah•8m ago•0 comments

We got 85–97% fewer estimated tokens than Cua Driver for agents reading Mac apps

https://github.com/ForteAI-Org/mecum
1•loriscomba•9m ago•0 comments

Show HN: We made SQLite support concurrent writes

https://github.com/sqliteai/sqlite-multiwriter
1•marcobambini•11m ago•0 comments

Using LM Studio as a Chatbot in Firefox

https://www.gocemitevski.com/using-lm-studio-as-a-chatbot-in-firefox/
1•sepokroce•12m ago•0 comments

Unison Cloud is now open source

https://www.unison-lang.org/blog/unison-cloud-open-source/
2•bontaq•12m ago•0 comments

Show HN: Fruit Inspector – Real-time YOLO tracking at 40 FPS on old CPUs via Nim

https://github.com/olesha-ai/fruit-inspector-demo
1•olesha-ai•12m ago•0 comments

Product Manager

https://wpsleaderboard.ai/
2•frantj•13m ago•0 comments

I guess I'm using WebP now?

https://anderegg.ca/2026/10/08/i-guess-im-using-webp-now
3•Brajeshwar•14m ago•0 comments

Monthly API credits for Max and Team plans

https://support.claude.com/en/articles/17154008-monthly-api-credits-for-max-and-team-plans
2•ahamez•15m ago•0 comments

The NYT Games app is terrible

https://unacceptable.nl/posts/nyt-bad/
1•zwckl•15m ago•0 comments

How the macOS System has changed over 7 years

https://eclecticlight.co/2026/10/09/how-the-macos-system-has-changed-over-7-years/
2•Brajeshwar•16m ago•0 comments

From Inflation to Variation: The Narrative Is Gone, Long Live the Narrative

https://medium.com/@smoking2man/from-inflation-to-variation-the-narrative-is-gone-long-live-the-n...
1•Aldus551•16m ago•0 comments

OpenTelemetry Tracing for Determinate Nix

https://determinate.systems/blog/determinate-nix-opentelemetry/
1•biggestlou•17m ago•0 comments

Five months treating bugs like patients and coding agents like a medical team

https://www.cockroachlabs.com/blog/experiment-running-hospital-code/
5•rafiss•20m ago•1 comments

Theory and Practice of Concurrency in the Entity-Component-System Pattern

https://arxiv.org/abs/2508.15264
1•lioeters•23m ago•0 comments

The Case for Boring Technology

https://deadparrotbbs.com/the-case-for-boring-technology/
2•speckx•24m ago•0 comments

Show HN: Realtime semantic advice on coding standards for the agents

https://github.com/dearlordylord/hapsland
5•Firfi•25m ago•1 comments

ChatGPT for Teens is not necessarily 'safer than the previous version,'

https://www.cnbc.com/make-it/2026/10/09/chatgpt-for-teens-safety-common-sense-media.html
3•cramer4next•26m ago•0 comments

Bootstrap 6 Alpha

https://blog.getbootstrap.com/2026/10/08/bootstrap-6-alpha/
2•mfld•27m ago•0 comments

The super intelligence shit is a humiliation ritual for OpenAI

https://bsky.app/profile/opinionhaver.bsky.social/post/3mxfo2mdjqs2z
9•doener•27m ago•3 comments

AI, Autonomous Warfare and the Severance from Responsibility

https://read.misalignedmag.com/ai-autonomous-warfare-and-the-severance-from-responsibility-480da3...
2•lcubw•31m ago•1 comments

VideoDB leads a 100-hour action retrieval benchmark vs. AWS Nova and Twelve Labs

https://videodb.io/blog/a-faster-path-to-the-next-policy
2•ashu_trv•31m ago•0 comments