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<a name="N10480"></a><a name="caching"></a>
<h2 class="underlined_10">Image caching</h2>
<div class="section">
<p>
        FOP caches images between runs. There is one cache per FopFactory instance. The URI is 
        used as a key to identify images which means that when a particular URI appears again, 
        the image is taken from the cache. If you have a servlet that generates a different 
        image each time it is called with the same URI you need to use a constantly 
        changi