MongoDB request DSL • opensavvy.ktmongo.dsl.options • WriteConcern • acknowledgment

acknowledgment

val acknowledgment: WriteAcknowledgment? = null

Describes how many nodes must acknowledge the write operation.

For the different options, see:

• WriteAcknowledgment.Majority: majority of the nodes.

• WriteAcknowledgment.Nodes: a given number of nodes.

• WriteAcknowledgment.Tagged: specific nodes selected ahead of time.

If this field is null (default), the MongoDB default acknowledgment applies, which is WriteAcknowledgment.Majority in most deployments.

Example

collections.updateMany(
    options = {
        writeConcern(WriteConcern(WriteAcknowledgment.Nodes(2))
    }
) {
   User::age inc 1
}

External resources

• Official documentation

See also

• WithWriteConcern.writeConcern Specify this option.