By default, this servlet examines all URLs to look for click-through IDs. This process can be inefficient, because only product detail pages will typically have these IDs. Therefore SearchClickThroughServlet has a clickThroughPages property that you can use to limit the pages to examine. This property is an array of URLs; these URLs can include asterisk (*) characters as wildcards. If clickThroughPages is not null, SearchClickThroughServlet will examine only the URLs that match one of the clickThroughPages entries. For example, you could set clickThroughPages to:

/myapp/*/product*.jsp,\
/myapp/*/sku*.jsp