# Replication (The Branch Couriers)
When the Cafe has multiple locations, these events occur as workers prepare backup shipments or sync timeline histories with other branches.
![[ReplicationSlotRead]]
![[ReplicationSlotWrite]]
![[ReplicationSlotSync]]
![[ReplicationSlotRestoreSync]]
![[SnapbuildRead]]
![[SnapbuildWrite]]
![[SnapbuildSync]]
![[TimelineHistoryRead]]
![[TimelineHistoryWrite]]
![[TimelineHistorySync]]
![[TimelineHistoryFileWrite]]
![[TimelineHistoryFileSync]]