fix the example here

1 files changed, 2 insertions, 1 deletions

diff --git a/README.rst b/README.rst
index bb6d4fa..5335eba 100644
--- a/README.rst
+++ b/README.rst
@@ -152,9 +152,10 @@ Memcached::
                 return value
 
         def gen_cached():
-            value = my_expensive_database.load_the_value()
+            value = fn()
             with mc_pool.reserve() as mc:
                 mc.put(key, value)
+            return value
 
         dogpile = Dogpile(expiration_time, init=True)