verifiable-token-based-authentication-pattern

Stateless authentication validates users via self-contained tokens without server-side session lookups. Use it for secure API authentication where each request carries a verifiable token to independently identify the user and permissions.

JWT tokens work for secure API authentication by acting as self-contained tokens that carry principal identification, expiration claims, and cryptographic integrity signatures, allowing servers to independently verify user identity and permissions.

Security considerations for token-based authentication include ensuring cryptographic integrity verification, enforcing token expiration, and validating principal identification to prevent unauthorized access to stateless APIs.

No, you do not need server-side session storage for JWT authentication. The stateless pattern allows servers to make authentication decisions based entirely on the verifiable token itself.

The best way to verify token integrity and expiration in a stateless architecture is to validate the token's cryptographic signature, check its expiration claims, and extract principal information directly from the self-contained token.