Hi Tim Lux,
Whatever method you choose you will always have to at one point loose some concurrency as the http protocol is stateless. The recommended approach would be to retrieve the object from in the DAL and update it's values with the one you retrieved from the view. While it might seem a little troublesome at first it is actually preferred. There would be no difference if the L2 cache is enabled or not, regarding concurrency.
The object container is a bit outdated and one could say deprecated.
Please do share with us if there is something that is bothering you with the suggested setup and maybe give us a little greater overview of the problem you are facing.
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