Unable to Set medium: Memory for Prefix Volume

[sbahmani]

Hello,

I am attempting to configure the prefix volume to use memory as the storage medium in the Kong Helm chart. However, my current configuration does not seem to work as expected. Here is the configuration I am using:

prefixDir:
  sizeLimit: 1Gi
  medium: Memory

Despite specifying medium: Memory, the configuration does not appear to take effect. I need the prefixDir to be backed by a memory storage medium to enhance performance for our use case.