'A client has started/stopped syncing on a worker.'

@measure_func('repl.on_user_sync')
def on_user_sync(self, conn_id, user_id, is_syncing, last_sync_ms):

    user_sync_counter.inc()
    self.presence_handler.update_external_syncs_row(conn_id, user_id, is_syncing, last_sync_ms)
