A proxy is an intermediary application that sits between clients and servers.
Typically used to Control access, record activities and convert between protocols. Proxies exist for many different protocols SMTP/email DNS HTTP/Web IRC/IM/Chat.
Proxies: Web Objects
With a web proxy, we have the opportunity to cache and reuse certain server responses. When caching; we usually talk about objects.
For example: An HTML page A JPEG image A PDF document Flash animation.
Objects are identified by URL (Uniform Resource Locator).Note that sometimes the term web page refers to a number of different objects (HTML, images, etc).