I don't know what you are referring to. If it's something related to Memcached itself, I suggest you take a look at the official guides to know what you can do.
You can see the memory Memcached is using by using the command line commands like top, ps or free in case you want to see how much free memory the instance has. Regarding changing the memory, you will probably need to edit the configuration file inside the /opt/bitnami/memcached folder.
Happy to help!
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