[Dovecot] Getting plugin config by user

There is a native way to set/get a configuration to one plugin, to various users ?

Like this:

my_plugin{ user_a=configurations user_b=configurations user_...... user_z=configurations }

I Have plugin and it can be enable/disabled by user. And i have a lot of users, like 10 m.

i think if i do like this:

my_plugin { configurations=user_a,user_b,user....,user_z }

Can get much memory to read every line of configuration...

Tks !