Performance degradation when assigned role user if roles in realm >10000 in admin UI #40928

yvladimirov · 2025-07-04T10:45:47Z

yvladimirov
Jul 4, 2025

Hi. We used keycloak and we have 10_000 roles in realm.
If I assigned role in admin UI for user and choice filter by real roles and UI very slow.

UI call next API
https://keycloak.host/admin/realms/{realmId}/users/{userId}/role-mappings/realm/available?first=0&max=101

But pagination is not work and response return all roles in realm.

Because API not used pagination parameters

Line 234 in f8f561a

public Stream<RoleRepresentation> getAvailableRealmRoleMappings() {

Can the following changes be made?

add parameters for API
change search roles
realm.getRolesStream() -> realm.getRolesStream(firstResult, maxResults)