How do I calculate the size of an index in MongoDB?

Now i want to find whether how much memory is consumed by this indexing. db.collection.stats() gives me the index size, but I wonder how the size is computed.

When should you NOT use list comprehensions in Python?

List comprehensions in Python help me write "pythonic" code; are there instances where you prefer an alternate way of writing lists?

Is ExpressJS still the de-facto framework for building web apps with Node.js?

I see even Hashnode is using Express. Has something hot popped up in the community that will replace Express?

What is "Inversion of Control" and what are its use cases?

How to mitigate 16MB per document limit imposed by MongoDB?

If you are building a web app, documents will start growing. Especially content based websites. How should we handle this problem? What should I do when my documents start growing and are about to hit this limit?

What's the worst mistake you have committed in production?

What measures do you take (Apart from CI/Tests etc) to ship quality software reliably in your company?

As NPM is a private body, do you think Node.js ecosystem needs a more open and community driven approach for managing packages?

If yes, what's the best way to approach this?

Which flavour of loop do you use most of the times in your primary programming language?

For example, I use JavaScript and most of the time I use forEach as following : arr.forEach(function(item){ //do something here });

How do I know what is the right time to implement sharding in MongoDB?

And what problems will it solve for me?