IPhone Image Caching
<pre><code>I want to save images fetched from url,i decided to store in NSTempDirectory(). If i store more than 100 images application get slow some times quit. 
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<p>Is deleting the files continuously after it reaches count like 50 or more is a good solution?</p>

<p>How many images can be stored in NSTempDirectory()?</p>

<p>Is there any other alternative to store images without affecting the application perfomance?</p>

<p>Thanks.</p>
