TokenEnhancer

Java Architecture Diary

Mar 19, 2019 · Information Security

Eliminate OAuth2 Check‑Token Bottleneck with JWT and Custom Token Services

This article explains how the default OAuth2 check‑token flow creates a performance bottleneck, then shows how to extend JWT tokens with user details via a custom TokenEnhancer and replace RemoteTokenServices with a custom ResourceServerTokenServices, including configuration, code examples, and the security trade‑offs of using JWT.