Query Plan Cache Methods
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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. |