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    <p>Here is my idea, the goal is to cache the results of your CargarHoteles() hotels function. Because you are caching it you can have a background process do the work while the user interface responds quickly.</p> <p>When the client first asks for information about a set of parameters the service return a unique id for that set of parameters (it looks to see if it is already in the cache and returns that if it exists). When the client gets the unique id it starts asking the server for some results -- if they are already in the cache they come back right away -- or a subset comes back with an indication of how much of the search is done.</p> <p>On the server side you have a worker process (or processes -- this solution allows you to toss more machines/process at the task if there is a good way to do so, for example a task for every xml file.) These workers are solving the problem and putting the results in the cache, when they are done they flag that cache item as finished. The next time the client requests more information it learns it has all the results.</p> <p>Note that this design is compatible with Marc's suggestion, that is the queue he talks about is the results which are being built as an entry in the cache. </p> <p>One of the nice features of this solution is if there is a lot of interest in one location (everyone is going to the Olympics!) your website gets faster.</p> <p>I hope this is clear. Post questions if it is not and I will try and explain more.</p>
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    1. COHogan, thanks for the response! That's a good idea, caching results with a unique id related to the search parameters. I haven't used this technique before but from what I've read it's used in a similar way to Session and ViewState, right? If the unique id isn't in the cache, meaning that the search hasn't been done before or results have been removed due to low memory, I need to load the hotel's information by reading the XML files. How would you suggest improving this response time? How can I show results as they load instead of waiting for all of them to load? Thanks!
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    2. COLooking for some information regarding caching in ASP.NET, I found this post: [http://www.codeproject.com/KB/web-cache/cachingaspnet.aspx](http://www.codeproject.com/KB/web-cache/cachingaspnet.aspx). In the second paragraph it says _some websites have page creation engines which create all pages in one go and save them as HTML pages which are then served to the users_. If I'm not mistaken, [http://www.booking.com](http://www.booking.com) uses this technique, because the results are displayed in a HTML file. Is this a solution that could be used in my case?
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    3. COIf I was doing it I would store the cache on an SQL server -- this will also make the cache available for longer (or as long as you like) it seems with this kind of system you don't need to refresh the cache very often -- every few days maybe? -- having them in a DB means they will have a longer life.
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