Hi I am using aws document db to do some performance testing .I am doing only read operations for certain period of time .But strangely I am not seeing anything in READOPS count metric
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ReadIOPS metric refers to disk read I/O operations. It's possible that your data set is cached in RAM, hence the database server doesn't need to fetch the documents from the physical storage.
Looking at the documentation, metrics like DocumentsReturned
or OpcountersQuery
could be what you are looking for.

Mihai A
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