MongoDB::ReadConcern - Encapsulate and validate a read concern
$rc = MongoDB::ReadConcern->new(); # no defaults
$rc = MongoDB::ReadConcern->new(
level => 'local',
A Read Concern describes the constraints that MongoDB must satisfy when reading
data. Read Concern was introduced in MongoDB 3.2.
The read concern level determines the consistency level required of data being
The default level is "undef", which means the server will use its
If the level is set to "local", reads will return the latest data a
server has locally.
Additional levels are storage engine specific. See Read Concern
<http://docs.mongodb.org/manual/search/?query=readConcern> in the
MongoDB documentation for more details.
This may be set in a connection string with the the "readConcernLevel"
- David Golden <email@example.com>
- Rassi <firstname.lastname@example.org>
- Mike Friedman <email@example.com>
- Kristina Chodorow <firstname.lastname@example.org>
- Florian Ragwitz <email@example.com>
This software is Copyright (c) 2018 by MongoDB, Inc.
This is free software, licensed under:
The Apache License, Version 2.0, January 2004