What is the use for IHttpHandler.IsReusable?

Question

I\'m writing a IHttpHandler and I\'ll need to implement a IsReusable property. When I look at the MSDN documentation it says:

Answer 1

Apparently, this keeps the handler in memory and able to handle multiple requests. When set to false, it has to create a new instance of the handler for each incoming request.

Here's a question that shows what happens when it's not used properly:

Streaming Databased Images Using HttpHandler