There is a pattern I am very fond of - “one database per tenant” in web applications with multiple, isolated users. Recently, I needed to fix an application I had for a long time where this database-per-tenant multitenancy utterly broke down, because I was…

Presentation slides for developers

Researchers in “natural language processing” tried to tame human language. Then came the transformer.

A look at how and why we migrated from Next.js to Ruby on Rails.

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Update: DeleteMe emailed me about the video:…

create a copy of a webpage that will always be up

A research-backed AI scenario forecast.

Exploring what makes Japan's transit cards so unique compared to the West.

Have you ever wished you could write simple CSS to declare a color, and then have the browser figure out whether black or white should be paired with that color?

Typst is the new foundation for documents. Sign up now and experience limitless power to write, create, and automate anything that you can fit on a page.

Information about the stream: https://codeforces.com/blog/entry/143282

Whiteboard of the lecture: https://1drv.ms/o/c/002f816ead7c8a29/EgCf7Dv8aOxGorF0NDcbkR4BvoQ4fQEMtCv3De5EHR7Jaw

Practice Contest:
First, join the codeforces group by this link: https…

Unsurprisingly, many of the X25 (Spring 2025) batch startups are AI-driven—but their applications span a wide range of industries.