I need to use a per call (request to a wcf webservice) database connection (enterprise library) and contextual data (user making the call). I need also to store per service instance data (stable data) .
So I have created an extension : System.ServiceModel.IExtension, in order to store some data as the context on each call of my service method : I was needeed to store some context as : CurrentUserId, List… I have created a static instance (singleton) of this custom extension that hold a static dictionnary for caching context data and entityframework connection.
I’m using wcf4 and the default InstanceContextMode (Per session), all the clients are connected behind a reverse proxy and balancer (My wcf service is available on 2 IIS Servers).
Quickly I found an issue in my caching as there was a memory leak. And I find that the solution for my caching was to store my context per thread like this :
(static) ConcurrentDictCachePerThread.TryAdd (System.Threading.Thread.CurrentThread.ManagedThreadId, CurrentUserRolesList);
Does it seems wrong to you ? Do I need to user some sort of threadstatic attribute instead?
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