20. The one or more non-transitory computer readable media of claim 18 , the process further comprising storing contextual information regarding a plurality of user requests.
20. The one or more non-transitory computer readable media of claim 18 , the process further comprising storing contextual information regarding a plurality of user requests. 22. The one or more non-transitory computer readable media of claim 20 , the process further comprising limiting an amount of contextual information that is stored, the limiting based on at least one of: a time associated with an item of contextual information, a size of an item of contextual information, or a number of user requests for which contextual information is stored.