> [!advisory] > <table><tr><td rowspan="4" width="25%"><img src="assets/wl_lock_advisory.png"></td><td><b>Wait Category</b></td><td>Lock</td></tr><tr><td><b>Mechanism</b></td><td><code>AdvisoryLock</code></td></tr><tr><td><b>Operations</b></td><td><a href="Operations/Table/SeqScan">SeqScan</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"><b>Application-Level Synchronization Barrier</b>. Advisory locks are a feature that allows developers to use the Postgres lock manager for application-specific logic (e.g., ensuring only one worker processes a specific task) without needing to lock actual table rows.</td></tr></table>