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What's the best way to handle JWT expiration and refresh on the client side?

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What's the best way to handle JWT expiration and refresh on the client side?

Asked on May 27, 2026

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Handling JWT expiration and refresh on the client side involves implementing a strategy to detect token expiration and request a new token without interrupting the user experience. This typically involves storing the JWT and a refresh token securely, checking the token's expiration, and using the refresh token to obtain a new JWT when needed.

Example Concept: JWTs (JSON Web Tokens) are used for stateless authentication. They include an expiration time (`exp` claim) after which they are no longer valid. To handle expiration, the client should monitor the token's validity and use a refresh token to request a new JWT from the server before the current one expires. This ensures continuous authentication without requiring the user to log in again.

Additional Comment:

Store JWTs and refresh tokens securely, using mechanisms like HttpOnly cookies or secure storage APIs.
Check the JWT expiration (`exp` claim) periodically or before making API requests.
Implement a silent refresh mechanism that uses the refresh token to obtain a new JWT before the old one expires.
Ensure the refresh token has a longer lifespan than the JWT and is used only for obtaining new JWTs.
Handle token refresh failures gracefully, prompting the user to log in again if necessary.

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What's the best way to handle JWT expiration and refresh on the client side?

Asked on May 27, 2026

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