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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•8mo 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!

Faulkner's 1,288 word sentence

https://www.openculture.com/2025/02/when-william-faulkner-set-the-world-record-for-writing-the-lo...
1•Insanity•34s ago•0 comments

Show HN: Deterministic, machine-readable context for TypeScript codebases

https://github.com/LogicStamp/logicstamp-context
1•AmiteK•38s ago•0 comments

Forty years in the Siberian wilderness: the Old Believers who time forgot

https://www.theguardian.com/world/2026/jan/22/forty-years-in-the-siberian-wilderness-the-old-beli...
1•mindracer•55s ago•0 comments

GNU InetUtils Security Advisory: remote authentication by-pass in telnetd

https://www.openwall.com/lists/oss-security/2026/01/20/2
1•blincoln•1m ago•0 comments

Experimenting with a Compiled Language

1•JhonPork•1m ago•0 comments

Isotonic and Convex Regression: A Review of Theory, Algorithms, and Applications

https://www.mdpi.com/2227-7390/14/1/147
1•PaulHoule•2m ago•0 comments

Salesforce ships higher-quality code across 20k developers with Cursor

https://cursor.com/blog/salesforce
1•onurkanbkrc•2m ago•0 comments

Quamina v2.0.0

https://www.tbray.org/ongoing/When/202x/2026/01/20/Quamina-2.0
1•robin_reala•3m ago•0 comments

Do people at Google use Gmail?

1•mr-pink•6m ago•0 comments

RestockAlerts – Realtime Restock Tracker For Lululemon, Aritzia and More

https://restockalerts.com/
1•dandeliontechie•7m ago•0 comments

What Aviation Teaches Us About Auditing

https://docs.eventsourcingdb.io/blog/2026/01/22/what-aviation-teaches-us-about-auditing/
1•goloroden•8m ago•0 comments

Economic Nihilism

https://twitter.com/palladiummag/status/2014043267244105903
1•MrBuddyCasino•11m ago•0 comments

Ask HN: Game where every player can claim they made a real museum artifact?

1•Shirakawa-kun•11m ago•0 comments

Show HN: I used Veo 3 and Nano Banana to generate memorial videos for lost pets

https://petmemories.io/
1•victoormt•14m ago•2 comments

Show HN: Desky – Strava style social tracking for work hours

https://apps.apple.com/us/app/desky-live-to-work/id6755210403
1•DCAlmond•21m ago•0 comments

Show HN: Epub.rs – Library of Rust's Docs.rs pages converted to epubs

https://epub.rs
1•fetzdev•23m ago•0 comments

Doctors in Brazil using tilapia fish skin to treat burn victims

https://www.pbs.org/newshour/health/brazilian-city-uses-tilapia-fish-skin-treat-burn-victims
3•kaycebasques•25m ago•0 comments

Love as a Practical Technology for Transformation

https://colinbeavan.substack.com/p/love-as-a-practical-technology-for
1•ObiOnePierogi•25m ago•1 comments

Supreme Court signals it will defy Trump to keep Lisa Cook on Federal Reserve

https://www.cnn.com/2026/01/21/politics/takeaways-supreme-court-federal-reserve-lisa-cook-trump-p...
5•andsoitis•25m ago•0 comments

Debunking the Myth of Join Ordering: Toward Robust SQL Analytics

https://arxiv.org/abs/2502.15181
2•remywang•26m ago•0 comments

GCVE – Launch of Db.gcve.eu – A New Open Public Vulnerability Advisory Database

https://gcve.eu/2026/01/07/gcve-db-announce/
1•adulau•26m ago•0 comments

Rules

https://demiculus.com/hidden-rules/
1•demiculus•27m ago•0 comments

Are Members of Congress Simply 'Single-Minded Seekers of Reelection'? (2018)

https://www.cambridge.org/core/journals/ps-political-science-and-politics/article/are-members-of-...
1•OgsyedIE•32m ago•0 comments

Field Notes on Scaling Moe Expert Parallelism with DeepEP

https://nousresearch.com/moe-scaling-field-notes/
1•todsacerdoti•39m ago•0 comments

Show HN: FastPrintf – A zero-garbage, glibc-compliant Java formatter using Ropes

https://github.com/YuyuZha0/fast-printf
2•YuyuZha0•39m ago•1 comments

BreachForums Power Seller IntelBroker Exposed

https://thecyberedition.com/breachforums-power-seller-intelbroker-exposed/
2•thehacknews•39m ago•1 comments

A business that scales with the value of intelligence

https://openai.com/index/a-business-that-scales-with-the-value-of-intelligence/
1•gmays•40m ago•0 comments

Color‑Driven Code Navigation

https://www.poppastring.com/blog/colordriven-code-navigation
1•todsacerdoti•42m ago•0 comments

Meta Grover 2

https://zenodo.org/records/18333427
1•KaoruAK•46m ago•0 comments

Meta Grover 1

https://zenodo.org/records/18333327
1•KaoruAK•47m ago•0 comments