Re-Use ApplicationUser object

[mrmoein]

Hello

In IdentityService.cs for each function call it read ApplicationUser from database

var user = _userManager.Users.SingleOrDefault(u => u.Id == userId);

Doas this made multiple connection to database if i call it multiple time?

if it's true how can i reuse ApplicationUser?

My problem is in AuthorizationBehaviour it call _identityService.IsInRoleAsync and _identityService.AuthorizeAsync.
In my handeler i need user roles and wrote another function in IdentityService and get role list.

Doas this make 3 connection for retriving ApplicationUser object?