This is a bugfix release, no new features since 3.5.9 were added.
Changelog
Compared to the latest release 3.5.9, the following changes and bugfixes were added.
Bugfixes
This is a complete list of the merged pull requests.
Updating used pekko-persistence-mongo and mongo driver to latest versions
The used Pekko persistence plugin pekko-persistence-mongo provides
in its newest version 1.2.0 more control of the MongoDB writeConcern to use.
Previously, e.g. the configured Acknowledged
write concern caused a different behavior than in MongoDB 5 when using Ditto with MongoDB 6.
Previously, the configured Acknowledged writeConcern only required the MongoDB primary to acknowledge the write operation.
With MongoDB 6, this behavior seem to have changed to use the configured “default write concern” of the database, which by
default is "majority".
Ditto defaults to this Acknowledged writeConcern, so when updating from MongoDB 5 to 6 an increase in insert performance
is probable, although the writes are then performed with higher consistency guarantees.
Ditto 3.5.10 provides updates the pekko-persistence-mongo to version 1.2.0 and provides with this update the ability
to also configure 3 additional writeConcerns:
W1- requires that the MongoDB primary acknowledges the writeW2- requires that the MongoDB primary and an additional secondary acknowledges the writeW3- requires that the MongoDB primary and two additional secondaries acknowledges the write
Where W1 should provide the behavior as Acknowledged before: only requiring the acknowledgement from the MongoDB primary.
As part of this update, also the MongoDB driver was updated to version 5.1.1.