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#API
2 posts
June 8, 2026
The Ticking Clock: Why Short-Lived JWTs Are Your Best Defense
Stateless JWTs can't be revoked on demand — once issued, they live until they expire. This deep dive covers why short lifetimes (5–15 min) are the strongest control you have, how the access/refresh token split actually works, refresh token rotation with reuse detection, and the sender-constrained token guidance from RFC 9700 (Jan 2025).
JWTAuthenticationSecurity
April 16, 2026
CORS Isn't Blocking You — Your Browser Is. Here's What's Actually Happening
Most developers treat CORS errors as a server configuration mystery. They're not. Your server responded fine — your browser intercepted the response. This post covers the CSRF attack CORS was built to prevent, how origin is actually defined, why Postman never sees CORS errors, how preflight requests work, and what every response header actually means.
CORSHTTPBrowser Security