if you issue a

CheckPermission

for

document:somedoc#view

and

document:somedoc#write

, then SpiceDB will be dispatching the subproblems of checking

document:somedoc#reader

and

document:somedoc#writer

. Those will be cached, so when you check for both, the system will only calculate each once (assuming the same user, and the CheckPermission calls being close together)