> [!NOTE] ![[assets/wl_activity_replicationslotsyncshutdown.png|256]] > > | | | > | :--- | :--- | > | **Wait Category** | Activity | > | **Mechanism** | `SlotSyncWorker` | > | **Operations** | [[Operations/Table/SeqScan]] | > | **Resources** | [[Resources/CPU|CPU]], [[Resources/RAM|Memory]] | > > **Administrative Idle State**. Introduced to support failover-capable logical replication slots, the slot sync worker ensures that slot positions are mirrored from the primary to the standby.