Deprecation of Persistence Broker in IAP 2019.1
The Persistence Broker has been deprecated in IAP 2019.1, and will be removed from all IAP distributions beginning with the 2019.3 release.
As a result of this deprecation, customers will need to instantiate their database connections for custom applications. Custom applications can continue to use MongoDB, although it is no longer required.
The Persistence Broker was instantiating database connections through adapter-mongo, which was deprecated in the 2019.1 release as well. For more information, see Deprecation of Adapter-Mongo in 2019.1.