does asp mvc model size affect performance

I've been developing a website and instead of having lots of models i've been chaining properties and wh开发者_如何学Goat not to a single model by populating a prop and returning itself. not very important to the question but

var data = model.withUser(user).withStuff(data)

i'm curious if having a model class with a lot of lines of code will affect performance of the web app?

Thoughts

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I don't know about performance (you'd have to benchmark one approach versus the other to say for sure), but I can say that having one monolithic class is going to be a pain when it comes to testing and reasoning about how it works.

In general, prefer composition to inheritance (lots of small classes to one large class).

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Well yes... more code to run == more execution time yet we are talking micro and mostly likely nano seconds of time here.

If you are worried about that you are either A. Facebook or B. Google. ;)