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-rw-r--r--actionpack/lib/action_controller/caching.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/actionpack/lib/action_controller/caching.rb b/actionpack/lib/action_controller/caching.rb
index 7fe699c34e..5bedb17cd1 100644
--- a/actionpack/lib/action_controller/caching.rb
+++ b/actionpack/lib/action_controller/caching.rb
@@ -236,6 +236,7 @@ module ActionController #:nodoc:
# * DRbStore: Keeps the fragments in the memory of a separate, shared DRb process. This works for all environments and only keeps one cache
# around for all processes, but requires that you run and manage a separate DRb process.
# * MemCacheStore: Works like DRbStore, but uses Danga's MemCache instead.
+ # Requires the ruby-memcache library: gem install ruby-memcache.
#
# Configuration examples (MemoryStore is the default):
#