Cache VS Session VS cookies?

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State management is a critical thing to master when coming to Web world from a desktop application perspective.

  • Session is used to store per-user information for the current Web session on the server. It supports using a database server as the back-end store.
  • Cookie should be used to store per-user information for the current Web session or persistent information on the client, therefore client has control over the contents of a cookie.
  • Cache object is shared between users in a single application. Its primary purpose is to cache data from a data store and should not be used as a primary storage. It supports automatic invalidation features.
  • Application object is shared between users to store application-wide state and should be used accordingly.

If your application is used by a number of unauthenticated users, I suggest you store the data in a cookie. If it requires authentication, you can either store the data in the DB manually or use ASP.NET profile management features.

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