Hi,

I do extensive userprofile caching in all my modules (it's Rodney from Smart-Thinker.com, I can't post new posts with my usual DNN account). I was recently examining my cache with a cache viewer and I think I may be caching duplicate information.

So my quesions are:

1) Are UserProfiles cached in the core?

2) If so, when are they cached, and how? (I saw a method called "ClearUserCache" that takes in a username - I can't find where it is set).

3) If so, what is cached? The profile properties and the roles?

If they are cached then I will change my caching methods to use the same key ( I use string cacheKey = portalID.ToString() + "UserID" + userID.ToString();)  so that I am not doubling the cache info.

Out of interest (if you got this far ;) - here is the code that I use:

        public UserInfo GetUserFromCacheOrDB(int portalID, int userID, int profileCacheSeconds)
        {
            string cacheKey = portalID.ToString() + "UserID" + userID.ToString();
            UserInfo user;

            bool userInCache = (DataCache.GetCache(cacheKey) != null);

            if (profileCacheSeconds > 0 && userInCache)
            {
                user = (UserInfo)DataCache.GetCache(cacheKey);
            }
            else
            {
                //get it from the DB
                user = new UserController().GetUser(portalID, userID);

                if (user != null && profileCacheSeconds > 0 && !userInCache)
                {
                    //add it to the cache with an absoulte expiry time (otherwise it may never update)
                    DataCache.SetCache(cacheKey, user, DateTime.Now.AddSeconds(profileCacheSeconds));
                }
            }
            return user;
        }