> [!ReplicationSlotControl] > <table><tr><td rowspan="4" width="25%"><img src="assets/wl_lwlock_replicationslotcontrol.png"></td><td><b>Wait Category</b></td><td>LWLock</td></tr><tr><td><b>Mechanism</b></td><td><code>ReplicationSlotControlLock</code></td></tr><tr><td><b>Operations</b></td><td><a href="Operations/Distributed/Redistribute">Redistribute</a></td></tr><tr><td><b>Resources</b></td><td><a href="Resources/RAM">Memory</a>, <a href="Resources/CPU">CPU</a></td></tr><tr><td colspan="3">Contention on the <b>Replication Orchestration Layer</b>. To ensure that replication progress is correctly tracked and that transaction logs (WAL) are not deleted until all subscribers have consumed them, the engine must serialize all administrative changes to the slot registry.</td></tr></table>