Access Token: A key that allows a user to access protected resources on a server, typically representing the user's identity and permissions.
Refresh Token: A key that can be used to obtain a new access token, extending the duration of access to resources without requiring the user to re-enter their credentials.
In one-liners, to understand what it is, so.
Access token: A key for accessing stuff securely.
Refresh Token: A key for getting a new access key without bothering the user for their password again.
Difference between Access and Refresh Token
| Aspect | Access Token | Refresh Token |
| Purpose | Allows access to protected resources | Used to obtain a new access token |
| Functionality | Grants temporary access based on user's permissions | Refreshes or extends access without reauthorization |
| Lifetime | Short-lived (minutes to hours) | Longer-lived than access token (days to weeks) |
| Storage | Stored on the client side | Stored securely on the server side |
| Usage | Used in API requests to access protected resources | Used to request a new access token when the current one expires |
| Example Analogy | Concert ticket allowing entry | A pass allowing you to get a new ticket without leaving the venue |
I owe a debt of gratitude to Hitesh Sir for their invaluable video reference. Their insights and explanations greatly enriched the content, providing a deeper understanding of the Access token and refresh token.