Have you ever run into a scenario where you wanted to update your UI as soon as there is some change to your Mongo database
There is a void between $in and $all where a new array query operator would come in handy. In MongoDB, querying documents where the value of a field is an array can be straight forward. Using the $in comparison operator on an array field will give you documents where the field’s array holds at least one of your provided values.
All you need to know to use SQL SELECT, GROUP, JOIN, LIMIT, and OFFSET queries in MongoDB like a boss