title: Storing data in memory, which is a good way?
body: <p>I have a items.xml file, which is loaded into memory once the application starts.
  Each element in items.xml is "converted" to type <code>Item</code> (which has just few int &amp; string properties), then added into a list of items. The item list should hold thousands instances of <code>Item</code>.</p>
  
  <p>Storing data in objects (<code>Item</code> class in my example) is ok? Is there another way to store such data in memory?</p>