Use the isCapped() method to determine if a collection is capped, as: db.collection.isCapped().

MongoDB creates a collection implicitly when the collection is first referenced in a command.

Custom read preferences and write concerns evaluate tags sets in different ways.

HGFS and Virtual Box's shared folders do not support this operation.

Built-in first-in-first-out property maintains the order of events, while managing storage use.

The value of totalTime represents the time, in microseconds, since the database last started and creation of the globalLock.

You may only dynamically include top-level fields from the serverStatus document that are not included by default.

The mode affects the behavior of explain() and determines the amount of information to return.

If this exceeds the amount of system memory and there is a significant amount of data on disk that isn't in RAM, you may have exceeded the capacity of your system.

To avoid overloading the connection resources of a single mongod or mongos instance, ensure that clients maintain reasonable connection pool sizes.