SYNOPSIS

       Start  a  session  with  mongoc_client_start_session(),  use the session for a sequence of operations and
       multi-document transactions, then free it with mongoc_client_session_destroy().  Any  mongoc_cursor_t  or
       mongoc_change_stream_t  using  a  session  must  be  destroyed  before the session, and a session must be
       destroyed before the mongoc_client_t it came from.

       By default, sessions are causally consistent. To disable causal consistency, before  starting  a  session
       create       a       mongoc_session_opt_t       with       mongoc_session_opts_new()       and       call
       mongoc_session_opts_set_causal_consistency(), then free the struct with mongoc_session_opts_destroy().

       Unacknowledged writes are prohibited with sessions.

       A mongoc_client_session_t must  be  used  by  only  one  thread  at  a  time.  Due  to  session  pooling,
       mongoc_client_start_session()  may  return  a session that has been idle for some time and is about to be
       closed after its idle timeout. Use the session within one minute of acquiring it to refresh  the  session
       and avoid a timeout.

       See the example code for mongoc_session_opts_set_causal_consistency().

AUTHOR

       MongoDB, Inc

COPYRIGHT

       2017-present, MongoDB, Inc