What is per call instance mode in WCF?
Per-call service is the default instance activation mode of WCF. When a WCF service is configured for a per-call service, a CLR object is created for the timespan a client call or request is in progress. CLR stands for Common Language Runtime and it includes service instances in WCF.
What are the different instance modes in WCF?
The WCF framework has defined the following three Instance Context modes: PerCall, PerSession, and Single.
Can we create instance in WCF?
Actually in WCF service, we can create instance of the service in three ways and It is Per Call, Per Session and Single. If you want to know only overview see the following image which will clear your all doubts. Now, it is time to learn step by step about everyone in detail.
What is instance management in WCF?
Instance Management is the name for a set of techniques used by WCF to bind client requests to service instances, governing which service instance handles which client request. This is a service side implementation detail.
What is throttling in WCF?
Throttling controls place limits on the number of concurrent calls, instances, or sessions to prevent over-consumption of resources. Throttling behavior is specified in service configuration file settings.
What is concurrency in WCF?
In WCF, concurrency issues can arise when two or more threads try to access the same resource at the same time. Note that a WCF service can handle one single request at a time. Concurrency in WCF enables you to control multiple active threads in an InstanceContext at a particular point of time.
Is WCF multithreaded?
WCF does not create any queue for client messages and replays them as soon as they arrive. Each service has multiple threads processing messages concurrently. The service implementation must be thread-safe to use this concurrency mode. With Concurrency Mode Multiple, threads can call an operation at any time.
How many requests can a WCF service handle?
one request
By default, a WCF service handles only one request at a given moment of time.
Can a single service have multiple endpoints?
A service may have multiple endpoints within a single host, but every endpoint must have a unique combination of address, binding and contract.
Can we have multiple endpoints in WCF?
WCF allow us to give multiple base addresses for each type of protocol. And at the run time corresponding endpoint will take the base address. So you can expose IService1 on multiple EndPoint with more than one binding as below.