Today I explain what ChannelFactory caching in the WCF 4.5 framework is. With the help of this new feature in .NET, we can cache the service instance. Microsoft has introduced a new property for the ClientBase<T> class; the property name is CacheSetting. We can set the cache setting with the help of the CacheSetting enum.
Here are the values of the Enum.
| Name |
Description |
| System.ServiceModel.CacheSetting.AlwaysOn |
All instances of the Client will use the same channel factory. |
| System.ServiceModel.CacheSetting.AlwaysOff |
All instances of the Client would use different channel factories. This is useful when each endpoint has different security requirements and it makes no sense to cache. |
| System.ServiceModel.CacheSetting.Default |
All instances of the Client would use the same channel factory except instance #4. Instance #4 would use a channel factory that is created specifically for its use. This setting would work for scenarios where a particular endpoint needs different security settings from the other endpoints of the same ChannelFactory type (in this case IService). |
Here is a sample code for the Default CacheSetting.
class Program {
static void Main(string[] args) {
ClientBase<IService1>.CacheSetting = System.ServiceModel.CacheSetting.Default;
using(ServiceReference1.Service1Client client = new Service1Client()) {}
}
}
Here is a sample code for the AlwaysOn CacheSetting.
static void Main(string[] args) {
ClientBase<IService1>.CacheSetting = System.ServiceModel.CacheSetting.AlwaysOn;
using(ServiceReference1.Service1Client client = new Service1Client()) {}
}
Here is a sample code for the AlwaysOff CacheSetting.
static void Main(string[] args) {
ClientBase < IService1 > .CacheSetting = System.ServiceModel.CacheSetting.AlwaysOff;
using(ServiceReference1.Service1Client client = new Service1Client()) {}
}
Reference from