YUYug Upadhyayinaccess-refresh-tokes.hashnode.dev·Aug 24, 2025 · 2 min readAccess Token vs Refresh Token: Complete Guide to Authentication & SecurityWhat is an Access Token? An access token is a digital key that allows users or applications to access protected resources, such as APIs or web services. Short-lived: Usually valid for minutes to hours. Format: Commonly a JWT (JSON Web Token) contai...00