Remove the user from the cache without refreshing it (#1422)

Some IdPs might have eventual consistency for their API calls, and refreshing the cache with its data may return the deleted user as part of the account

Introduce a new account manager method, removeUserFromCache, to remove the user from the local cache without refresh

management/server/account.go

@@ -1299,6 +1299,22 @@ func (am *DefaultAccountManager) lookupCache(accountUsers map[string]struct{}, a
 	return data, err
 }
 
+func (am *DefaultAccountManager) removeUserFromCache(accountID, userID string) error {
+	data, err := am.getAccountFromCache(accountID, false)
+	if err != nil {
+		return err
+	}
+
+	for i, datum := range data {
+		if datum.ID == userID {
+			data = append(data[:i], data[i+1:]...)
+			break
+		}
+	}
+
+	return am.cacheManager.Set(am.ctx, accountID, data, cacheStore.WithExpiration(cacheEntryExpiration()))
+}
+
 // updateAccountDomainAttributes updates the account domain attributes and then, saves the account
 func (am *DefaultAccountManager) updateAccountDomainAttributes(account *Account, claims jwtclaims.AuthorizationClaims,
 	primaryDomain bool,

management/server/user.go

@@ -1073,11 +1073,10 @@ func (am *DefaultAccountManager) deleteUserFromIDP(targetUserID, accountID strin
 		if err != nil {
 			return fmt.Errorf("failed to remove user %s app metadata in IdP: %s", targetUserID, err)
 		}
-
-		_, err = am.refreshCache(accountID)
-		if err != nil {
-			log.Errorf("refresh account (%q) cache: %v", accountID, err)
-		}
+	}
+	err := am.removeUserFromCache(accountID, targetUserID)
+	if err != nil {
+		log.Errorf("remove user from account (%q) cache failed with error: %v", accountID, err)
 	}
 	return nil
 }