File dispatcher

If you use an elaborate search function, you may create a new category for search queries. This helps the Dispatcher send search queries to the instance that responds fastest. Sticky connections ensure that documents for one user are all composed on the same instance of AEM. This is important if you use personalized pages and session data. The data is stored on the instance, so subsequent requests from the same user must return to that instance or the data is lost.

For most pages that use sticky connections you have to switch off caching - otherwise the page looks the same to all users, regardless of the session content. For a few applications, it can be possible to use both sticky connections and caching; for example, if you display a form that writes data to the session.

In such a case, make sure that each request goes through only one Dispatcher. A Dispatcher does not handle requests that come from another Dispatcher. Therefore, make sure that both Dispatchers access the AEM website directly. By that it. As an HTTP infrastructure component, a CDN works much like Dispatcher: when a CDN node receives a request, it serves the request from its cache if possible the resource is available in the cache and is valid.

Otherwise, it reaches out to the next closest server to retrieve the resource and cache it for further requests if appropriate. For example, in an Akamai setup the request can take the following path:.

In most cases, Dispatcher is the next server that might serve the document from a cache and influence the response headers returned to the CDN server. There are a numer of ways to control for how long a CDN will cache a resource before it re-fetches is from Dispatcher. This can be achieved e. Manual invalidation CDNs allow resources to be removed from the cache through web interfaces.

When new releases are deployed, typically a manual invalidation is required. If this approach is used to cache managed content, it implies that content changes are only visible to end users once the configured caching period is expired and the document is fetched from Dispatcher again. If caching was enabled for the author instance, you need to disable it and delete the contents of the cache directory.

A Dispatcher can be used in front of an author instance to improve authoring performance. To configure an authoring Dispatcher, do the following:. You may wish to test the newly installed Dispatcher against a working AEM publish instance, to ensure that a baseline correct install has been acheived.

Replace the sample dispatcher. If you have used the previously configured author dispatcher and enabled a dispatcher flushing agent then please do the following:. Adobe Experience League Sign In. Sign In. New and improved search With improved relevancy, additional filtering, and the ability to search across all learning and Community content, it's now easier to find what you need.

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