Is there a different way to store only the single bin in aerospike?

I want to create a registry for alive server with set as “servers”. This set will only contain one record i.e. server name, so I was thinking whether we have any single bin concept where we do not need to provide key or some efficient way to create this kind of set.

Currently i have created key with server name and i am inserting the same server as bin in the set.

Yes, there is a namespace configuration for single-bin.