=item MEMCACHED_BEHAVIOR_RANDOMIZE_REPLICA_READ
-Allows randomizing the replica reads starting point. Normally the read is
+Allows randomizing the replica reads starting point. Normally the read is
done from primary server and in case of miss the read is done from primary
-+ 1, then primary + 2 all the way to 'n' replicas. If this option is set
++ 1, then primary + 2 all the way to 'n' replicas. If this option is set
on the starting point of the replica reads is randomized between the servers.
-This allows distributing read load to multiple servers with the expense of
+This allows distributing read load to multiple servers with the expense of
more write traffic.
=item MEMCACHED_BEHAVIOR_CORK
MEMCACHED_NO_SERVERS is returned if no servers are available to test with.
MEMCACHED_NOT_SUPPORTED is returned if we were not able to determine
if support was available. All other responses then MEMCACHED_SUCCESS
-report an error of some sort. This behavior also enables
+report an error of some sort. This behavior also enables
MEMCACHED_BEHAVIOR_TCP_NODELAY when set.
+=item MEMCACHED_BEHAVIOR_KEEPALIVE
+
+Enable TCP_KEEPALIVE behavior.
+
+=item MEMCACHED_BEHAVIOR_KEEPALIVE_IDLE
+
+Specify time, in seconds, to mark a connection as idle. This is only available as an option Linux.
=item MEMCACHED_BEHAVIOR_SOCKET_SEND_SIZE
Find the current size of SO_SNDBUF. A value of 0 means either an error
occured or no hosts were available. It is safe to assume system default
-if this occurs.
+if this occurs. If an error occurs you can checked the last cached errno statement to find the specific error.
=item MEMCACHED_BEHAVIOR_SOCKET_RECV_SIZE
Find the current size of SO_RCVBUF. A value of 0 means either an error
occured or no hosts were available. It is safe to assume system default
-if this occurs.
+if this occurs. If an error occurs you can checked the last cached errno statement to find the specific error.
+
+=item MEMCACHED_BEHAVIOR_SERVER_FAILURE_LIMIT
+
+This number of times a host can have an error before it is disabled.
+
+=item MEMCACHED_BEHAVIOR_AUTO_EJECT_HOSTS
+
+If enabled any hosts which have been flagged as disabled will be removed
+from the list of servers in the memcached_st structure. This must be used
+in combination with MEMCACHED_BEHAVIOR_SERVER_FAILURE_LIMIT.
+
+=item MEMCACHED_BEHAVIOR_RETRY_TIMEOUT
+
+When enabled a host which is problematic will only be checked for usage
+based on the amount of time set by this behavior.
+
+=item MEMCACHED_BEHAVIOR_HASH_WITH_PREFIX_KEY
+
+When enabled the prefix key will be added to the key when determining
+server by hash.
=back