Caching Further Out
One of the powerful features of dynacache is that once content has been configured for caching, the cache can potentially be moved close to the edge of the network, closer to the user population. This eliminates network hops. For example, a cached page fragment is normally served from the app server, but that fragment can be pushed out to the web server or even a proxy server. WAS manages this caching “further out” by using external caches.
External Caches
The final item of note in the page displayed on Figure 19-5 is External Cache Groups. The dynamic cache service in WAS needs to keep track of external caches that it communicates with. In the section on the ESI processor, it was noted that you had to install an application ...
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