If you want to tune your SQL statements, you need to understand how the server executes them. The article explains this.

If you think you know everything there is to know about custom attributes, read this article. PostSharp will let you to take your custom attributes to the next level and let them actually add new behaviors to your code.

This is the second article in a series of two, with this one going into the details of the real-world implementation of custom attributes that actually add behaviors to your code, namely performance instrumentation and field validation.