> [!NOTE] ![[assets/wl_lwlock_lockfastpath.png|256]] > > | | | > | :--- | :--- | > | **Wait Category** | LWLock | > | **Mechanism** | `LockFastPathLock` | > | **Operations** | [[Operations/Table/SeqScan]], [[Operations/Tuple/ModifyTable]] | > | **Resources** | [[Resources/RAM|Memory]], [[Resources/CPU|CPU]] | > > Contention on the **Locking Shortcut Registry**. To improve parallel performance, Postgres allows each backend to maintain a small, local "fast-path" cache of the relation locks it currently holds.