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I have an application that reuses the same WCF channel over and over again. I keep a static reference through a factory object. I wonder if this is good pratice or that I should open x channels and round robin all services calls over these channels instead of using the single channel?
Do these services calls get queued if using only 1 channel or does the same happen when I would use x channels?
You should use a single channel factory for all requests but different channels should be constructed for each request. Never reuse channels. They are not expensive to create and are not thread safe. What is expensive to create is the channel factory. It is thread safe and can be reused. Of course if the channel factory get into a faulted state you might need to reopen it.