This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
My question is "why does browser need to go to server at all when it knows it has image in the cache"? How can I prevent 301 calls and how do I know if browser is caching the image (is it considering Expires directive at all??)?