c# - What is the overhead on PostAuthenticateRequest? -

i implementing custom ticket system using application_postauthenticaterequest method in global.asax file (asp.net mvc). i'm wondering overhead kind of thing - since deserialize information on every request. generates cookie of around 1.8 kb, ton - better alternative frequent database trips?

information being deserialized

• user id (int)
• roles (string[])
• email (string)
• associated ids (int[]) // (hard describe these are, each user have around 3 of them)

it seemed smarter implement custom formsauthenticationticket system continuously round-trips database based on user.identity.name. i'm worried constant deserialization inhibitive. looks this...

    protected void application_postauthenticaterequest(object sender, eventargs e)     {         httpcookie authcookie = httpcontext.current.request.cookies[formsauthentication.formscookiename];          if (authcookie != null)         {             string encticket = authcookie.value;              if (!string.isnullorempty(encticket))             {                 // decrypt ticket if possible.                 formsauthenticationticket ticket = formsauthentication.decrypt(encticket);                  var userdata = deserializer.deserialize(ticket);                 userprincipal principal = new userprincipal(userdata);                  httpcontext.current.user = principal;             }         }     } 

here class being serialized userdata in formsauthenticationticket.

[serializable] public class membershipdata {     public string email     {         get;         set;     }      public int id     {         get;         set;     }      public string[] roles     {         get;         set;     }      public int[] ancillary     {         get;         set;     } } 

i recommend measuring performance expect cookie approach faster doing roundtrips database. simplify serialization , make fast possible using comma delimited or special character delimited string. here how rank different operations in terms of performance:

1. in-process communication
2. inter-process communication
3. inter-network communication