Query Plan Cache Methods
The PlanCache methods are only accessible from a collection's plan
cache object. To retrieve the plan cache object, use the
db.collection.getPlanCache()
method.
Note
For details on a specific method, including syntax and examples, click on the link to the method's reference page.
Name | Description |
---|---|
Returns an interface to access the query plan cache object and
associated PlanCache methods for a collection. | |
Clears all the cached query plans for a collection.
Accessible through the plan cache object of a specific collection,
i.e. db.collection.getPlanCache().clear() . | |
Clears the cached query plans for the specified query shape.
Accessible through the plan cache object of a specific collection,
i.e. db.collection.getPlanCache().clearPlansByQuery() | |
Displays the methods available for a collection's query plan cache.
Accessible through the plan cache object of a specific collection,
i.e. db.collection.getPlanCache().help() . | |
Returns the plan cache information for a collection. Accessible
through the plan cache object of a specific collection, i.e.
New in version 4.4. |