java - Token based authentication for REST service: where to store generated token on server-side? -


i'm trying implement token authentication rest service based on spring mvc.

i'm followiong answer: https://stackoverflow.com/a/10864088/1061499 guideline, need understand server-side detail.

when user authenticated (first time via username + password) return token stores information. when same user sent token in request header, need identify associated user , define if "session" still alive.

so way two:

  1. encrypt token algorithm (which one?) can use decrypt on server side , extract user information
  2. store token-user association info in application db storing session info.

most suggest first solution, without storing info authentication in db, solution seems me less secure.

any suggestion?


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