One Entity per module?
I know you haven't started covering the use of Entities in you videos yet but i need to ask this question. Currently, I started building fairly complex module for Drupal 7 and I know that leveraging Entities is going to be essential for this project.
I was looking at one of the DrupalCon 2011 sessions that talked about writing modules for optimal performance. The presenters said that separating the parts of a large application into too many modules is going to make Drupal slower and that you should keep it to as less modules as possible.
When i started setting up the file structure for my application I realized i'm going to need to create at least 4 Entities. Usually you name your entity according to your module's name. But what if i have 4 entities specified in 1 module. The problem is that naming conventions start getting complicated.
My question is...
Is it possible / good practice to create multiple entities in 1 module?
...or should we specify 1 entity per module?
I'd appreciate any suggestions