@Override
                    public void onConnectionClosed() {
                        if (member != null) {
                            updateOtherActiveConnectedMemberList(false, member);
                        }
                    }
@return a positive or negative number, and never 0 to ensure that the order is consistent in
        every node.
turms-server-common/src/main/java/im/turms/server/common/infra/cluster/service/discovery/DiscoveryService.java