Access Token and Refresh Token Introduction: Authentication is a fundamental aspect of web applications and APIs, ensuring that users and clients are who they claim to be. It establishes trust and protects sensitive data, making it crucial for security and user privacy. Access Tokens and Refresh Tokens: In secure authentication, access tokens play a pivotal role by authenticating a client and authorizing its access to specific resources for a limited time. Refresh tokens complement this process by enabling the client to obtain new access tokens without requiring user reauthentication, enhancing security and user experience in a balanced manner. Access Tokens: Access tokens are credentials used in authentication systems to verify the identity of a client and grant it access to specific resources. Their primary purpose is to ensure secure and authorized communication between a client (e.g., a user or application) and a server or resource. Lifecycle of Access Tokens: Generation: Access t...