Added `.cache` attribute on throttles.

Closes #1066.  More localised than a new settings key, and more
flexible in that different throttles can use different behavior.
Thanks to @chicheng for the report! :)

1 files changed, 7 insertions, 0 deletions

diff --git a/docs/api-guide/throttling.md b/docs/api-guide/throttling.md
index 42f9c228..cc469217 100644
--- a/docs/api-guide/throttling.md
+++ b/docs/api-guide/throttling.md
@@ -70,6 +70,13 @@ Or, if you're using the `@api_view` decorator with function based views.
 
 The throttle classes provided by REST framework use Django's cache backend.  You should make sure that you've set appropriate [cache settings][cache-setting].  The default value of `LocMemCache` backend should be okay for simple setups.  See Django's [cache documentation][cache-docs] for more details.
 
+If you need to use a cache other than `'default'`, you can do so by creating a custom throttle class and setting the `cache` attribute.  For example:
+
+    class CustomAnonRateThrottle(AnonRateThrottle):
+        cache = get_cache('alternate') 
+
+You'll need to rememeber to also set your custom throttle class in the `'DEFAULT_THROTTLE_CLASSES'` settings key, or using the `throttle_classes` view attribute.
+
 ---
 
 # API Reference