Mongo 5+ writes during update of one field in a document

[steevej (Steeve Juneau)]

@John_Cantu

This information will affect how we model the data.

You should not base your schema on implementation details of the database server you are using.

Only the fields that differs are updated.

@John_Cantu

I hope only the update values have to be written to disk.

But despite the fact that only the fields that differ are updated, the whole document is written back to disk. And that’s for efficiency reasons, compression would be hard on a field by field basis.

Could you please provide closure on some of your other threads by marking some post as the solution?

"{ } " usage when finding elements in array

That is not odd, that is the way it works, that is the way it is documented. If you look at the documentation, you will see that find() is a method (or a class function if you prefer) that takes some parameters. The first one is a query. When you remove {}, the { results : ... } part becomes the query rather than an optional parameter.

Using values in a cursor as qualifier value within Mongosh

Please read Formatting code and log snippets in posts and then update your post so that your code is readable.

Node JS "let" command questions / quirks

Not 2, but 3. Using let, vs const vs var has absolutely nothing to do with MongoDB. They are pure JavaScript concepts. You may start with let - JavaScript | MDN, const - JavaScript | MDN and var - JavaScript | MDN

That helps the forum being useful by indicating to readers that they can trust the answer provided.