As an introduction, JWT is JSON Web Token, mainly used for authorization in the backend services to know the user and his/her privileges. It primarily consists of two primary tokens — access and…

GeeksforGeeks is a platform for learning and practicing coding skills, offering tutorials, articles, and coding challenges for computer science students and professionals. Users can learn about algorithms, data structures, and programming languages, and practice coding problems to improve their problem-solving skills and prepare for technical interviews.

Flutter Community

JWTs, or JSON Web Tokens, are used for authorization in backend services by providing access and refresh tokens. In Flutter, handling async HTTP requests can lead to multiple token refresh attempts when access tokens expire. To manage this, Dio's QueuedInterceptor can queue requests and handle tokens more efficiently. Key functionalities include a token validator, request refresher, and a request retry mechanism to ensure smooth operation and security.

Dio + JWT in Flutter — Solution of async hell