| causalConsistency |
bool |
Configure causal consistency in a session. If true, each operation
in the session will be causally ordered after the previous read or
write operation. Set to false to disable causal consistency.
See
» Casual Consistency
in the MongoDB manual for more information.
|
true |
| defaultTransactionOptions |
array |
Default options to apply to newly created transactions. These
options are used unless they are overridden when a transaction is
started with different value for each option.
options
| Option |
Type |
Description |
| maxCommitTimeMS |
integer |
The maximum amount of time in milliseconds to allow a single
commitTransaction command to run.
If specified, maxCommitTimeMS must be a signed
32-bit integer greater than or equal to zero.
|
| readConcern |
MongoDB\Driver\ReadConcern |
A read concern to apply to the operation.
This option is available in MongoDB 3.2+ and will result in an
exception at execution time if specified for an older server
version.
|
| readPreference |
MongoDB\Driver\ReadPreference |
A read preference to use for selecting a server for the operation.
|
| writeConcern |
MongoDB\Driver\WriteConcern |
A write concern to apply to the operation.
|
This option is available in MongoDB 4.0+.
|
[] |
| snapshot |
bool |
Configure snapshot reads in a session. If true, a timestamp will
be obtained from the first supported read operation in the session
(i.e. find, aggregate, or
unsharded distinct). Subsequent read operations
within the session will then utilize a "snapshot"
read concern level to read majority-committed data from that
timestamp. Set to false to disable snapshot reads.
Snapshot reads require MongoDB 5.0+ and cannot be used with causal
consistency, transactions, or write operations. If
"snapshot" is true,
"causalConsistency" will default to false.
See
» Read Concern "snapshot"
in the MongoDB manual for more information.
|
false |