NAME

       mongoc_write_concern_t - Write Concern abstraction

SYNOPSIS

       mongoc_write_concern_t  tells  the  driver  what level of acknowledgment to await from the
       server. The default, MONGOC_WRITE_CONCERN_W_DEFAULT, is right for the  great  majority  of
       applications.

       You  can  specify  a  write  concern  on  connection objects, database objects, collection
       objects, or per‐operation.

       See Write Concern on the MongoDB website for more information.

WRITE CONCERN LEVELS

       MONGOC_WRITE_CONCERN_W_DEFAULT (1)
              By default, writes block awaiting acknowledgment from MongoDB.  Acknowledged  write
              concern allows clients to catch network, duplicate key, and other errors.

       MONGOC_WRITE_CONCERN_W_UNACKNOWLEDGED (0)
              With  this  write  concern,  MongoDB  does  not  acknowledge  the  receipt of write
              operation. Unacknowledged is similar to errors ignored; however, mongoc attempts to
              receive and handle network errors when possible.

       MONGOC_WRITE_CONCERN_W_MAJORITY (majority)
              Block  until  a write has been propagated to a majority of the nodes in the replica
              set.

       n      Block until a write has been propagated to at least n nodes in the replica set.

       journal
              Block until the node receiving the write has committed the journal.

DEPRECATION

       The write concern MONGOC_WRITE_CONCERN_W_ERRORS_IGNORED (value ‐1) is a deprecated synonym
       for MONGOC_WRITE_CONCERN_W_UNACKNOWLEDGED (value 0), and will be removed in the next major
       release.

COLOPHON

       This   page   is   part   of   MongoDB   C   Driver.    Please   report   any   bugs    at
       https://jira.mongodb.org/browse/CDRIVER.