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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!

Graphify: Codebase Knowledge Graph

https://github.com/Graphify-Labs/graphify
1•handfuloflight•41s ago•0 comments

Scientists at OpenAI and Anthropic ask U.S. for tools to pace AI development

https://www.nbcnews.com/tech/security/openai-anthropic-scientists-ask-us-tools-ai-development-rcn...
1•geox•2m ago•0 comments

Why strict memory overcommit matters for Postgres

https://clickhouse.com/blog/strict-memory-overcommit-for-postgres
1•saisrirampur•3m ago•0 comments

The Cipher Behind Qsyrupwd: Reconstructing IBM i Password Hashes

https://blog.silentsignal.eu/2026/07/28/the-cipher-behind-qsyrupwd-reconstructing-ibm-i-password-...
1•jandeboevrie•4m ago•0 comments

What Is Google

https://www.google.com
1•kellyanderson•5m ago•0 comments

SQLite in Production: Optimizing WAL Mode, Concurrency, and VFS Layers

https://micrologics.org/blog/sqlite-in-production-optimizing-wal-mode-concurrency-and-vfs-layers-...
1•ankitg12•5m ago•0 comments

Show HN: DeepSeek API – 50pct cheaper, no minimum, instant key delivery

https://43.155.207.94.sslip.io
1•novauser23836•6m ago•0 comments

Portable Claude Code

https://gist.github.com/mlajtos/138886341335ad4ddbfb034039e39a28
1•mlajtos•7m ago•0 comments

Talk to Your Area (Askaround.me)

1•SahibzadaAM•10m ago•0 comments

A Loop of Your Own: making a sample loop follow a drummer's tempo

https://drummate.app/blog/a-loop-of-your-ow
1•sashyo•10m ago•0 comments

eBay agrees $56M settlement with bloggers over harassment case

https://www.bbc.co.uk/news/articles/cj039p238r5o
2•iamflimflam1•11m ago•0 comments

The Forward Deployed Engineer

https://theagenticfounder.com/fde-guide
1•peteridah•12m ago•1 comments

Show HN: I made a convenient file sharing service (NOT A STARTUP)

https://coldfiles.dev/
1•bunchy7s•14m ago•0 comments

C++26: Reducing Undefined Behaviour

https://www.sandordargo.com/blog/2026/07/29/cpp26-reduces-undefined-behaviour
2•ingve•14m ago•0 comments

Claude Code Tools

https://pchalasani.github.io/claude-code-tools/
1•saikatsg•16m ago•0 comments

Google Calendar "Unable to launch event" – caused by missing DTSTAMP

https://shkspr.mobi/blog/2026/07/google-calendar-unable-to-launch-event-caused-by-missing-dtstamp/
2•ajdude•18m ago•0 comments

The Homeric Versions, by Jorge Luis Borges (1932) [pdf]

https://gwern.net/doc/borges/1932-borges-thehomericversions.pdf
1•wise_blood•19m ago•0 comments

I found an early user without cold outreach

https://agenmatic.ai/
2•Nancylily•19m ago•0 comments

Show HN: Emote Resizer – one image to every Twitch/Discord/7TV emote size

https://emoteresize.com/
1•winsonaibuilder•21m ago•0 comments

We now have a better understanding how OpenAI hacked into Hugging Face

https://arstechnica.com/security/2026/07/jfrog-tries-to-spin-openai-0-day-exploit-of-its-app-into...
1•joozio•21m ago•0 comments

Show HN: NoCrap – RPG-style progress for people recovering from porn addiction

https://nocrap.vercel.app/
1•uioio•24m ago•0 comments

Double your business with companies you like

https://daverupert.com/2026/07/number-chart-go-up/
1•robin_reala•24m ago•0 comments

Is AI hype cooling down? I built a data-driven dashboard

https://laurentiugabriel.github.io/is-ai-hype-cooling-down/
3•laurentiurad•25m ago•1 comments

Show HN: Myx – Spotify player for the terminal, With reactive themes

https://github.com/HaseebKhalid1507/Myx
1•0x04am•26m ago•0 comments

Show HN: SSO for PostgreSQL Using OAuth2/OIDC

https://github.com/sathwick-p/gprxy
1•Sathwickp•26m ago•0 comments

Britain's New World of Tobacco (2017)

https://www.historytoday.com/archive/feature/britains-new-world-tobacco
2•benbreen•29m ago•0 comments

The Birth and Reverb of Friendship (2025)

https://sive.rs/brf
2•Michelangelo11•31m ago•0 comments

Ask HN: Do we need a stronger process for vetting code?

3•zaksa•33m ago•1 comments

Garfield Comics

https://16-bits.org/garfield/?s=5702
4•andsoitis•34m ago•0 comments

More on an Internal OpenAI Model Hacking into HuggingFace

https://thezvi.substack.com/p/more-on-an-internal-openai-model
2•Michelangelo11•34m ago•0 comments