I didn't know which of the SE sites was best for this question. It is not a code question, but more of a "tell me your experiences and give me advice" question.
I recently landed a client who already has a website, an old static HTML site. The client is somewhat small, and work on the project has not begun. The contract is for a complete redesign using Wordpress as the platform.
Today, the client emailed me with their "good news". They have landed a deal with Walmart for a few of their products. They have not yet revealed which products.
What should I expect and prepare for, should the site begin getting a large volume of traffic all of the sudden.