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Clustered collections are collections with a clustered index. Clustered collections store documents ordered by clustered index key value. You can use clustered collections when only one clustered index is necessary.
Limitations
Clustered collection limitations:
The clustered index key must be on the
_id
field.Clustered collections may not be capped collections.
Steps
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(Optional) Enter the number of seconds for the expireAfterSeconds field.
The expireAfterSeconds field is a TTL index that enables automatic deletion of documents older than the specified number of seconds. The expireAfterSeconds field must be a positive, non-zero value.