-memcached_mget_execute() is similar to memcached_mget(), but it may trigger
-the supplied callbacks with result sets while sending out the queries. If
-you try to perform a really large multiget with memcached_mget() you may
-encounter a deadlock in the OS kernel (we fail to write data to the socket
-because the input buffer is full). memcached_mget_execute() solves this
-problem by processing some of the results before continuing sending out
-requests. Please note that this function is only available in the binary
-protocol.
+memcached_mget_execute() and memcached_mget_execute_by_key() is
+similar to memcached_mget(), but it may trigger the supplied callbacks
+with result sets while sending out the queries. If you try to perform
+a really large multiget with memcached_mget() you may encounter a
+deadlock in the OS kernel (we fail to write data to the socket because
+the input buffer is full). memcached_mget_execute() solves this
+problem by processing some of the results before continuing sending
+out requests. Please note that this function is only available in the
+binary protocol.