Ask memcached security questions

May I ask memcached security questions. I see that memcached does not have a user password or something like that. The link can be used. For example, I have created a key $ body on the virtual machine. for users of the same virtual machine, if I guess my variable name. Can he also get the data ?, Shared space is even less likely. could you tell us about memcached's security problem.
I see that memcached does not have a user password or something like that.

The link can be used.

For example, I have created a key on the virtual machine as $ body;

For users of the same virtual machine, if I guess the variable name.

Can he also get the data?



------ Solution --------------------
The shared space is even less likely. the memory is good enough for you. let alone the security of shared memory data.
This is also the possibility of a vm. Generally, the configurations of the VM are poor, so basically no one will build memcached on it.
Generally, several hosts are used for memcached cache data. one or two hosts are the master and the other are used for backup, in case of primary reboot/power failure, wait for the backup to be quickly topped up or recover the data to the host...

Discussion

Back to the second floor, I wrote an error. I mean a VM. That is the shared space.

Back to the third floor, I just want to know about the mechanism and whether memcached supports user permissions. I didn't say that this function is required.