Implementing JWT token refresh enhances security by using short-lived access tokens paired with longer-lived refresh tokens for automatic renewal. As the creator of CoreUI with extensive Node.js authentication experience since 2014, I’ve implemented token refresh systems in numerous enterprise applications. The most secure approach uses separate access and refresh tokens, where refresh tokens are stored securely and used exclusively for generating new access tokens. This pattern provides optimal security while maintaining seamless user experience without frequent re-authentication.