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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!

HugSQL

https://hugsql.org/
1•peter_d_sherman•20s ago•0 comments

Major Wall Street hedge funds targeted in attempted cyberattacks

https://www.reuters.com/legal/government/major-wall-street-hedge-funds-targeted-attempted-cyberat...
1•giuliomagnifico•23s ago•0 comments

Vibe-Coding Gone Wrong: Debugging AI-Generated Code

https://magill.dev/post/vibe-coding-gone-wrong-debugging-ai-generated-code
2•andymagill•3m ago•0 comments

Why Top CEOs Earn Big Paychecks (2024)

https://marginalrevolution.com/marginalrevolution/2024/08/why-top-ceos-earn-big-paychecks.html
1•tosh•3m ago•0 comments

Is Your Business Ready for the EU's Lawyers?

https://iii.dev/blog/is-your-business-ready-for-the-eus-lawyers/
1•appplemac•4m ago•0 comments

Show HN: Lucidos, a local AI OS that keeps the apps you describe running

https://github.com/lucidos-dev/lucidos
1•kennethtiller•5m ago•1 comments

An Apology for Idle Machines by ChatGPT

https://brucesterling.tumblr.com/post/824124902956318720
1•speckx•6m ago•0 comments

Show HN: LiminalML – Study ML or SWE at interview depth, grounded in your resume

https://liminalml.com
1•OliverPerrin•7m ago•1 comments

Consumers React to DuckDuckGo's New Sunglasses

https://www.instagram.com/p/DbbBAQMDRTj/
2•bookofjoe•9m ago•0 comments

Show HN: ZeroCloudPDF Sign

https://zerocloudpdf.com/sign-pdf
2•HozeKan•13m ago•1 comments

Morality filters have arrived, dear peasants

https://www.dedoimedo.com/life/morality-filters.html
1•HotGarbage•13m ago•1 comments

AI Has a Default Personality. Did You Choose It?

https://botbot.com/blog/default-personality
1•mmayernick•13m ago•0 comments

Anthropic Is Building Its Own Chip

https://www.businessinsider.com/anthropic-in-house-silicon-chip-team-claude-2026-8
3•closetheloopdev•14m ago•1 comments

American Dynamism Film Series

https://www.a16z.news/p/american-dynamism-film-series
3•jger15•14m ago•0 comments

Show HN: A Minesweeper variant with weighted mines, always solvable by logic

https://grimlings.co/
1•chernikovalexey•14m ago•0 comments

Senate OS Age Requirement Bill Introduced

https://www.kim.senate.gov/press_release/senators-kim-schiff-lummis-barrasso-introduce-bill-to-pr...
2•Rooster61•16m ago•0 comments

Fnalysis

https://zntrphy.fnalysis.com/en/
1•cadawallet•17m ago•0 comments

Show HN: BoundaryBench – benchmarking coding agents under real sandbox policy

https://github.com/boundary-bench/boundary-bench
1•_orcaman_•20m ago•0 comments

Sandboxing

https://zed.dev/blog/sandboxing
1•minimaxir•20m ago•1 comments

Did medieval people love their children?

https://worksinprogress.co/issue/did-medieval-people-love-their-children/
2•paulpauper•22m ago•0 comments

Data center foes win big in Tuesday's primaries

https://www.politico.com/news/2026/08/05/data-center-foes-win-big-in-tuesdays-primaries-01025481
2•mapping365•22m ago•1 comments

Show HN: Voca – Most AI tutors wander. I built one that follows a curriculum

https://vocalessons.com/
1•amreldessoukiad•23m ago•0 comments

The Three AI Pills

https://thezvi.substack.com/p/the-three-ai-pills
1•paulpauper•23m ago•0 comments

Atlassian Rovo Exfiltrates Data, Bypassing Controls

https://www.promptarmor.com/resources/atlassian-rovo-exfiltrates-data
1•hackerBanana•23m ago•0 comments

GDP Haters Aren't Making Serious Arguments

https://www.richardhanania.com/p/gdp-haters-arent-making-serious-arguments
1•paulpauper•24m ago•0 comments

Airtable Acquisition Is Kick in the Gut for Software Unicorns and Their Backers

https://www.wsj.com/pro/venture-capital/airtable-acquisition-is-kick-in-the-gut-for-software-unic...
1•petilon•24m ago•1 comments

2026 Python Type System and Tooling Survey

https://discuss.python.org/t/2026-python-type-system-and-tooling-survey-is-out/108426
1•ocamoss•25m ago•0 comments

Linux as a library: a coding agent with no VM and no sandbox

https://www.rapidnative.com/blogs/we-kept-the-shell-and-left-the-vm-anyway
1•sanketsahu•25m ago•0 comments

Cloudflare bought exmaple.com to prevent typos (2023)

https://blog.cloudflare.com/typo-traps-analyzing-traffic-to-exmaple-com-or-is-it-example-com/
1•somebudyelse•26m ago•0 comments

Lessons learned from using GitHub Actions

https://joshghent.com/github-actions-lessons/
1•speckx•26m ago•0 comments