# | Driver | Description
# | `rbtree` | An in memory, non persistent rbtree based datastore.
# Useful for caching data locally.
+ # | `htrie` | An in memory, non persistent datastore which can use
+ # a hash table, rbtree or patricia trie store depending
+ # on the data type of the key.
# | `memcached` | A non persistent "webscale" distributed datastore.
# Useful if the cached data need to be shared between
# a cluster of RADIUS servers.
# Driver specific options are:
#
+#
+# ### Htrie cache driver
+#
+# htrie {
+ #
+ # type:: Htrie backend type
+ #
+ # [options="header,autowidth"]
+ # |===
+ # | Option | Description
+ # | `auto` | The backend is automatically determined based on data type of the key
+ # | `hash` | Use a hash table
+ # | `rb` | Use an rbtree
+ # | `trie` | Use a patricia trie
+ #
+# type = "auto"
+# }
+
#
# ### Memcached cache driver
#