[2.2.x] Updated the default cache key transformation in documentation.

Follow up to 6c69de80bdcd2744bc64cb933c2d863dd5e74a33. Backport of 3f141719a198983a41840e3c2ea542f87c92e4c1 from master
2019-09-24 05:42:43 -05:00 · 2019-09-24 05:42:43 -05:00 · f314cebe82
commit f314cebe82
parent 29d2f5a662
1 changed files with 1 additions and 1 deletions
--- a/docs/topics/cache.txt
+++ b/docs/topics/cache.txt
@ -1038,7 +1038,7 @@ key version to provide a final cache key. By default, the three parts
 are joined using colons to produce a final string::

    def make_key(key, key_prefix, version):
-        return ':'.join([key_prefix, str(version), key])
+        return '%s:%s:%s' % (key_prefix, version, key)

 If you want to combine the parts in different ways, or apply other
 processing to the final key (e.g., taking a hash digest of the key