'Can I use the timestamp portion of a MongoDB document ID for a TTL index?

According to this documentation, you can create a TTL index on a document field containing a date value. It seems to imply you have to create a field just to hold the timestamp of when the document was generated. However, this documentation shows that you can get the generation time of a document from its document ID. So is there any way to use that information for a TTL index, without creating a new field just to hold the generation time data which already exists in the document ID?

mongodbttl


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