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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!

Sipio – A minimalist tasting journal for coffee, wine, beer and other drinks

https://jirkapenzes.github.io/sipio-web/
1•jiripenzes•2m ago•0 comments

Systems for Making Systems

https://maxkapur.com/2026/06/03/metasystems.html
1•speckx•8m ago•0 comments

Enshittification, Despotification, and the Open Internet (by Mike Masnick)

https://www.liberalism.org/p/enshittification-despotification-and-the-open-internet
2•liotier•10m ago•0 comments

'All Systems Glow'

https://www.cnet.com/tech/all-systems-glow-apple-teases-wwdc-2026-with-new-tagline-playlist-wallp...
1•rbanffy•11m ago•0 comments

Show HN: Aeterna – Private, passwordless AI digital legacy vault

https://helloaeterna.com/
1•ls1911•12m ago•1 comments

TrustedRouter: One API, all the LLMs, provably private

https://jperla.com/blog/trustedrouter-one-api-all-llms-provably-private
1•ljlolel•14m ago•0 comments

Git and S3 as the memory layer for agents

https://twitter.com/VijitDhingra1/status/2062265896039833935
2•crush_robo_1536•14m ago•0 comments

My Software North Star

https://kristoff.it/blog/north-star/
1•kristoff_it•15m ago•0 comments

What your router knows (but won't tell)

https://david.weekly.org/blog/2026-04-16-what-your-router-knows/
1•ujeezy•15m ago•0 comments

How LLMs Work

https://www.0xkato.xyz/how-llms-actually-work/
2•0xkato•15m ago•0 comments

It's time to fly – Codex [video]

https://www.youtube.com/watch?v=bJcA23ckzcY
2•phyzix5761•18m ago•0 comments

A Man Who Reads Books for a Living (One Every Two Days)

https://lithub.com/the-man-who-reads-books-for-a-living-one-every-two-days/
2•gmays•22m ago•0 comments

Show HN: CLI for crawling documentation sites into Markdown with defuddle

https://github.com/artemnistuley/docrawl
1•nistuley•22m ago•0 comments

The Approach to Equilibrium

https://www.guidavid.com/writing/approach-to-equilibrium
1•gdss•23m ago•0 comments

Revealing the Frontier with Stacks and Queues

https://dystroy.org/blog/stack-and-queues/
1•g0xA52A2A•26m ago•0 comments

NULLs in ClickHouse can hurt performance

https://rushter.com/blog/clickhouse-nulls/
1•birdculture•27m ago•0 comments

Why are there no good tablets at the moment?

https://neilzone.co.uk/2026/06/why-are-there-no-good-tablets-at-the-moment/
1•speckx•27m ago•0 comments

Rewiring software delivery for the agentic era

https://www.mckinsey.com/capabilities/technology/our-insights/rewiring-software-delivery-for-the-...
1•igor_mart•29m ago•0 comments

Monitor all your servers from one beautiful dashboard

https://boxwatch.app/
1•genx-joe•30m ago•0 comments

Show HN: I created a React alternative using web componnents

https://createthirdplaces.org/tech/placesjs.html
3•gulugawa•30m ago•0 comments

Multi-stage distributed query execution in ClickHouse Cloud

https://clickhouse.com/blog/multi-stage-distributed-query-execution-clickhouse-cloud
1•samaysharma•31m ago•0 comments

Stophy for AI Agents

https://stophy.dev
1•hakiiizimana•31m ago•0 comments

Trump's Takeover of the American Regulatory Machine

https://www.wsj.com/politics/policy/trump-takeover-regulators-130b57a3
4•doener•32m ago•0 comments

Analysis of Canadian Surveillance Law Expansion Under Bill C-22 – CitizenLab

https://citizenlab.ca/research/analysis-of-proposed-surveillance-law-expansion-under-bill-c-22/
2•EmbarrassedHelp•34m ago•1 comments

PaceVer (an alternative to SemVer, for mobile apps)

https://pacever.org/
2•maxloh•34m ago•0 comments

How ClickHouse Became 26x Faster at Joins

https://clickhouse.com/blog/clickhouse-fast-joins
1•samaysharma•35m ago•0 comments

Can poppy seeds make you fail a drug test?

https://www.popsci.com/health/can-poppy-seeds-cause-positive-drug-test/
2•bryan0•36m ago•0 comments

KDE Linux Is Coming Along Nicely, Ditching the AUR and Tightening Up Security

https://itsfoss.com/news/kde-linux-may-2026-update/
1•amcclure•36m ago•0 comments

God of War Laufey: First gameplay trailer

https://blog.playstation.com/2026/06/02/first-look-at-god-of-war-laufey/
1•glitchc•38m ago•0 comments

Have a "Lifetime" Without Microsoft

https://techrights.org/n/2026/06/03/Have_a_Lifetime_Without_Microsoft.shtml
2•amcclure•39m ago•1 comments