It's great that Elon has such ambitious plans, but as he keeps saying, he wants the future to look like the Culture in Iain M Bank's sci-fi series of the same name. If you read at least the first book of the series, you'll see that it's a Communist society run by AI's. I'm not really sure that's the kind of future I want to be living in. Elon's original plan just to make life multi-planetary was a much more palatable future.
Refresh tokens are essential for secure, long-lived sessions in .NET APIs, but they are surprisingly easy to get wrong. This post walks through building a simple auth server that issues short-lived JWT access tokens + opaque refresh tokens, then shows a practical client token refresh strategy: reactive refresh (automatic on 401 with DelegatingHandler). Includes full runnable code, common pitfalls, and an engaging style that reads like a magazine article. Built from first principles in .NET 10.