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The Life and Times of a Dev Yes, we're really that weird

So I've been playing with WCF lately.  It's been rather interesting.  Here's the basic scenario:

Need a service (service a) that communicates with a back-end service (service b) with a limited number of communication channels available to service b, and with the need to make asynchronous calls to service a and for service a to queue any pending requests for service b and execute them when it gets the chance.

Enter WCF.  Basically, I developed a service contract for both synchronous calls and asynchronous calls and implemented two service hosts, one for each, over a net.tcp binding on an arbitrary port.

The cool thing is that you really can configure the entire communcation channel (endpoint) through the config files.

Things I learned:

1.  Use svcconfigeditor--it really helps.

2.  Generate your stub class using the svcutil /language:C# assembly /config:app.config

3.  Dual Channel over Http is MUCH, MUCH slower versus using a tcp channel (I'm guessing this is soap overhead).

4.  If you're getting a server too busy exception, check the service behaviors and ensure that serviceThrottling is set to where you want it.

<serviceThrottling maxConcurrentCalls="160" maxConcurrentSessions="100" />

Anyway, so far, so good.  This is great stuff--I didn't have to think much at all about what was happening under the sheets, although there is lots of good information out there about what is going on.

Posted on Wednesday, November 29, 2006 11:48 AM Work | Back to top


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