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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!

Bootstrappable Builds: How and Why

https://lwn.net/SubscriberLink/1088279/ada6cd53d01cdafa/
1•6581•1m ago•0 comments

Security Through Obscurity

https://en.wikipedia.org/wiki/Security_through_obscurity
1•thuva4•3m ago•0 comments

Meta faces pivotal kids' safety trial

https://www.politico.com/news/2026/08/18/meta-faces-pivotal-kids-safety-trial-01039903
1•0in•5m ago•0 comments

Each degree of warming could add a month of intolerable heat for 1B people

https://phys.org/news/2026-08-degree-month-intolerable-billion-people.html
1•geox•6m ago•0 comments

Operation Blue Skies: Reducing aviation climate impact with AI

https://blog.google/innovation-and-ai/models-and-research/google-research/blue-skies/
1•thm•8m ago•0 comments

Show HN: MCP-Proxy Add MCP support to any REST API – no code changes required

https://github.com/crhuber/mcp-proxy
2•cr_huber•12m ago•0 comments

Show HN: MyPdfly – 30 free PDF tools, no signup required

https://mypdfly.com
1•Tauseef199•13m ago•0 comments

Tell HN: Use AI to music score your books

1•arisAlexis•14m ago•0 comments

The Berlin Government has been Hacked

https://www.heistberlin.com/news/berlin-senate-government-hacked-cyberattack-bela/
4•dudefeliciano•14m ago•1 comments

Show HN: DynaJS – New JavaScript runtime with batteries included

https://github.com/corporatepiyush/dynajs
1•truth_seeker•14m ago•0 comments

Toxicity and Antisocial Behavior over User Lifetimes on Social Media (2024)

https://arxiv.org/abs/2407.09365
1•wslh•14m ago•0 comments

Job Ads Tell You What Employers Want, Not What You Want

https://julienreszka.com/blog/job-ads-tell-you-what-employers-want-not-what-you-want/
2•julienreszka•21m ago•0 comments

How Krackpot works: secp256k1, SHA-256 and RIPEMD-160 in WebGPU

https://krackpot.io/blog/how-it-works
2•svenfaw•22m ago•0 comments

Executable pseudocode for learning CS without syntax barriers

https://thaduscodelabs.com
2•thadusTeam•24m ago•0 comments

Anthropic's Annualized Revenue Tops $65B Before IPO

https://www.bloomberg.com/news/articles/2026-08-17/anthropic-revenue-run-rate-surpasses-65-billio...
3•johnbarron•24m ago•1 comments

So Long Relayd, and Thanks for All the Fish

https://btxx.org/posts/so-long-relayd/
3•bradley_taunt•25m ago•0 comments

Everybody Wants You to Win

https://web.navan.dev/posts/2026-07-15-everybody-wants-you-to-win.html
3•jger15•26m ago•0 comments

AI automation: Lock in payroll savings or reinvest capacity into growth

https://urnicus.com/blog/the-quiet-cost/
2•urnicus•29m ago•0 comments

Show HN: The Hacker News Puzzle

https://pzlgames.com/games/hackernews/
4•pompomsheep•30m ago•0 comments

Maiden voyage for India's first hydrogen train

https://www.chemistryworld.com/news/maiden-voyage-for-indias-first-hydrogen-train-signals-the-cou...
2•valeg•30m ago•0 comments

Show HN: Samuel, a Silly Speech Model

https://samuel.vvolhejn.com/
2•vvolhejn•31m ago•0 comments

Show HN: AnyCreature. making 3D creature by agent. harness by 3D assets pipeline

https://github.com/Ariescar/anyCreature
3•Ariescar•35m ago•0 comments

Google buys crashed airline Spirit's data at auction, because AI

https://www.theregister.com/ai-and-ml/2026/08/18/google-buys-crashed-airline-spirits-data-at-auct...
21•pseudolus•35m ago•3 comments

Native vLLM and ROCm 7.15 for RX 6000 (RDNA2) on Windows 11 – 26 Tflops FP16

https://github.com/sebastianmechno-sys/vllm-rocm-windows-rdna2
2•esseba-dev•36m ago•0 comments

MacBook Is Now an AI Workstation: Run Qwen 3.8 Locally

https://suyash-joshi.medium.com/your-macbook-is-now-an-ai-workstation-run-qwen-3-8-locally-d1e103...
4•suyash•38m ago•1 comments

Show HN: MeetMoves – video/GIF backgrounds for Google Meet, no OBS needed

https://chromewebstore.google.com/detail/meetmoves/pcihfjkbfcfademdaplkhmgngdlkfepg
3•amu4biz•42m ago•0 comments

KTransformers 0.7 Expands AVX-512 Support to Benefit AMD EPYC Servers

https://www.phoronix.com/news/KTransformers-0.7
2•rbanffy•53m ago•0 comments

Global collaboration group for people worldwide

4•jonahSong•1h ago•0 comments

An X Live Show for Indie Founders

https://x.com/jaimememb
2•Jaime_MB•1h ago•0 comments

Lisp Used in Nanotechnology [video]

https://www.youtube.com/watch?v=fytGL8vzGeQ
2•dipanshuhappy•1h ago•0 comments