diff --git a/README.rst b/README.rst
index ce94715..ee3812b 100644
--- a/README.rst
+++ b/README.rst
@@ -55,6 +55,34 @@ apache.::
 If you set COMPRESS_ENABLED and COMPRESS_OFFLINE to False in local_settings.py
 that allows you to bypass the compress and collectstatic as well.
 
+
+Settings
+~~~~~~~~
+
+The use of a cross-process cache such as Memcached is required.
+
+Install Memcached itself and a Memcached binding such as python-memcached.
+
+For a single horizon instance use the CACHES setting like the example below.
+
+CACHES = {
+    'default': {
+        'BACKEND': 'django.core.cache.backends.memcached.MemcachedCache',
+        'LOCATION': '127.0.0.1:11211',
+    },
+}
+
+For multiple horizon instances behind a load balancer configure each instance
+to use the same cache like the example below.
+
+CACHES = {
+    'default': {
+        'BACKEND': 'django.core.cache.backends.memcached.MemcachedCache',
+        'LOCATION': [u'10.2.100.133:11211', u'10.2.100.134:11211'']
+    },
+}
+
+
 NOTE:
 =====