Chapter 6. Persistent Data Using Sessions and Cookies
IN THIS CHAPTER
Anytime you browse to almost any major website on the Internet today, the server will send your client a "cookie." What are these cookies? They are small packets of data that are stored in your browser's cache. Every time you visit that website, the browser will send that data back to the server. So why is this useful? To appreciate cookies, you'll need to first understand a little bit more about the HTTP protocol.
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