Re: "In principle, nothing wrong with using a separate context for
each query there, if not the time to create the context - 2
milliseconds. Of course, when the context is created for each page in
a browser, a user of these 2 milliseconds will not notice, but for the
server, this means that it may set up a second no more than 500
contexts, and therefore can not handle more than 500 queries per
What about creating contexts in advance of the request coming in?