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
`db.collection.getPlanCache()`	Returns an interface to access the query plan cache object and associated PlanCache methods for a collection.
`PlanCache.clear()`	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()`.
`PlanCache.clearPlansByQuery()`	Clears the cached query plans for the specified plan cache query shape. Accessible through the plan cache object of a specific collection, i.e. `db.collection.getPlanCache().clearPlansByQuery()`
`PlanCache.help()`	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()`.
`PlanCache.list()`	Returns the plan cache information for a collection. Accessible through the plan cache object of a specific collection, i.e. `db.collection.getPlanCache().list()`.

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db.collection.getPlanCache