private void invalidateRelationshipCache(Long ownerId, Long relatedUserId) {
        Pair<Long, Long> pair = Pair.of(ownerId, relatedUserId);
        ownerIdAndRelatedUserIdToHasRelationshipAndNotBlockedCache.invalidate(pair);
        ownerIdAndRelatedUserIdToIsBlockedCache.invalidate(pair);
    }
The method exists for backward compatibility
turms-service/src/main/java/im/turms/service/domain/user/service/UserRelationshipService.java