How to properly select elements in MongoDB?

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LXSTVAYNE2021-08-04 16:56:54

MongoDB

LXSTVAYNE, 2021-08-04 16:56:54

You must first sort the documents by the date field in descending order (date in the format yyyy.mm.dd so that the lexicographic comparison will work fine), then find the document by _id and return the next 30. How to do this in an optimized way?

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