What Is Actually Getting Cached?

[ez4bk]

What is cached as value in the chosen cache?

I looked up the implementation code a bit, which states that the value is a query struct that stores db.Statement.Dest and db.Statement.RowsAffected. But I'm not really sure what is db.Statement.Dest? Is it going to be raw result from the database? If so, in what datatype? Or is it going to be the pointer to the model corresponding to the table?

In my project, I have a DAO method to determine if there is any data with field foreign_id = x. With both querying from the cache, if I use .First() and cache the row result, the performance is a lot worse than using .Count() which I believe cache only a number. So I wonder what causes the different.