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New in version 2.6.

Flushes user information from in-memory cache, including removal of each user’s credentials and roles. This allows you to purge the cache at any given moment, regardless of the interval set in the userCacheInvalidationIntervalSecs parameter.

invalidateUserCache has the following syntax:

db.runCommand( { invalidateUserCache: 1 } )

Required Access

You must have privileges that include the invalidateUserCache action on the cluster resource in order to use this command.