title: Django Redis sorl.Thumbnails
body: <p>thumbnail in my django project. 
  It require a key value database, my project have redis.</p>
  
  <p>I configured solr.thumbnails with redis:</p>
  
  <pre><code>THUMBNAIL_DEBUG = True
  THUMBNAIL_FORMAT = 'PNG'
  THUMBNAIL_KVSTORE = 'sorl.thumbnail.kvstores.redis_kvstore.KVStore'
  THUMBNAIL_REDIS_HOST = 'localhost'
  THUMBNAIL_REDIS_PORT = 6379
  </code></pre>
  
  <p>Later I activated sorl.thubnails. I copied an static image in my static folder and I put this image in a template with sorl.thumbnails code:</p>
  
  <pre><code>{% load thumbnail %}
  {% thumbnail "myimage.png" "100x110" crop="center" as im %}
      &lt;img src="{{ im.url }}" width="{{ im.width }}" height="{{ im.height }}"&gt;
  {% endthumbnail %}
  </code></pre>
  
  <p>It create an image with the correct dimensions in a /cache folder at the root of my project. This image have the correct new dimensions.</p>
  
  <pre><code>cache/c8/1a/c81a5dc6e63107dd2614b2b89d04d4c5.png 
  </code></pre>
  
  <p>Redis console MONITOR, have a line with the request</p>
  
  <pre><code>1380142932.884816 [0 127.0.0.1:38838] "GET" "sorl-thumbnail||image||789cd5e7c339366b2b99f45d1daf3101"
  </code></pre>
  
  <p>In the html the image tag is correct:</p>
  
  <pre><code>&lt;img src="cache/c8/1a/c81a5dc6e63107dd2614b2b89d04d4c5.png" width="100" height="110"&gt;
  </code></pre>
  
  <p><strong>But image cannot show, django console says:
  GET /cache/c8/1a/c81a5dc6e63107dd2614b2b89d04d4c5.png HTTP/1.1" 404 1728</strong></p>
  
  <p>Helpme please, what's wrong?</p>