Test and review 3scale deployment with Redis database 5.x upgrade

Hi,

In the https://issues.redhat.com/browse/THREESCALE-6791 issue ongoing work on the deployment side of 3scale (with 3scale-operator) has been being done about upgrading Redis internal databases version from 3.2 to 5.x for both backend-redis and system-redis DBs.

At the moment of writing this, it seems that from the deployment point of view/side it seems like it should be feasible (with some changes at operator level that have to still be implemented) and tests upgrading the Redis servers using internal databases have been performed and the results look generally look.

To fully conclude that we can go forward with the upgrade of Redis database version from 3.2 to 5.x we think that:

• We (operator team) should test the upgrade together with the System team so verifications at application level are performed. Ideally we should test it with a real dataset and/or at least exercise some relevant functionalities that end up modifying/using the database so we verify that the functionality at application level looks good.
• We (operator team) should test the upgrade together with the Backend team so verifications at application level are performed. Ideally we should test it with a real dataset and/or at least exercise some relevant functionalities that end up modifying/using the database so we verify that the functionality at application level looks good.

I also recommend reading the comments on the related Jira issue

Please contact me if you have any doubts and to advance the work on this (do the testing together, etc.)