If you use the Presentation API to implement your front end web application, follow these steps to upgrade your Presentation API version when you upgrade your version of the MDEX Engine. Note that the Assembler API, rather than the Presentation API, is recommended for all new front-end application development.
Add the
back_compatflag to your Dgraph instance. Set the flag to the version of the Presentation API currently used in your web application. For information about how to do this, refer to the Oracle Commerce Guided Search Admininstrator's Guide.Note
The back_compat flag is intended to facilitate upgrades or testing in staging environments only. It is not recommended for use in a production environment. Production environments should use the version of PAPI that ships with the MDEX Engine.
Run the upgraded MDEX engines long enough to verify that they are working correctly.
Upgrade the presentation API in the web application. For information about how to do this, refer to the Presentation API Installation Instructions and Release Notes.
Run your upgraded MDEX engines with the upgraded API to verify that they are working correctly.
