Classic Web vs. Single-page Application

I built this feed reader application to compare the development cost and performance of a classic web site vs. a single-page application.

I Clicked a Button and Nothing Happened

You might have clicked the "Delete Feed" button and the feed never got deleted. Why? In general, you have to be logged in to do any operations that change anything on the server. I decided to still show those buttons because I want visitors to be able to experience how a classic web site and a single-page application behave after certain actions.