Can any one explain the differences or the advantage of Cacheflow products over the recently introduced Cisco Cache Engine Series 570, 550, and 505, which directly work with routers on the edge and locate near end users.
According to Cisco:
The Cache Engine is a special-purpose hardware and software carrier-class solution that has been designed from the ground up as a loosely coupled, multinode network system optimized to provide robust shared network caching.
The Cache Engine works with routers running Cisco IOS software with the Web Cache Communication Protocol (WCCP). WCCP redirects Hypertext Transfer Protocol (HTTP) traffic to a Cache Engine; the Cache Engine then manages the web request. See Appendix B, "Web Cache Communication Protocol Version 1," for more information on WCCP, Version 1. See Appendix C, "Web Cache Communication Protocol Version 2," for more information on WCCP, Version 2.
The Cache Engine works in tandem with a router to handle web traffic. This traffic includes user requests to view pages and graphics (objects) on World Wide Web servers, whether internal or external to your network, and the replies to
those requests.
When a user requests an object from a web server, the router first sends the request to a Cache Engine. If the Cache Engine has a copy of the requested object in storage, the Cache Engine sends the user the object. Otherwise, the Cache Engine gets the requested objects from the web server, stores a copy of the objects (caches them), and simultaneously forwards the objects on to the user.
By caching web objects in this manner, the Cache Engine can speed the satisfaction of user requests if more than one user wants to access the same objects. This also reduces the amount of traffic between your network and the Internet, potentially improving your overall network performance and optimizing your bandwidth usage.
Thanks in advance. |
