NAME

       mongoc_read_concern_t - Read Concern abstraction

SYNOPSIS

       NOTE
              New in MongoDB 3.2 and mongoc 1.3.0

       The  mongoc_read_concern_t  allows clients to choose a level of isolation for their reads.
       The  default,  MONGOC_READ_CONCERN_LEVEL_LOCAL,  is  right  for  the  great  majority   of
       applications.

       You  can  specify  a  read  concern on connection objects, database objects, or collection
       objects.

       See readConcern on the MongoDB website for more information.

       Read  Concern  is  only  sent  to  MongoDB  when   it   has   explicitly   been   set   by
       mongoc_read_concern_set_level to anything other then empty string.

READ CONCERN LEVELS

       MONGOC_READ_CONCERN_LEVEL_LOCAL ("local")
              Default.  The  query  will  return the node’s most recent copy of data. Provides no
              guarantee that the data has been written to a majority of the nodes.

       MONGOC_READ_CONCERN_LEVEL_MAJORITY ("majority")
              The query will return the node’s most recent copy of the data confirmed  as  having
              been written to a majority of the nodes.

COLOPHON

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