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Delete and immediately re-cache files when web sites are likely to receive simultaneous client requests for the same page.

Immediate recaching ensures that Dispatcher retrieves and caches the page only once, instead of once for each of the simultaneous client requests. Logger Factory; import org.apache.commons.httpclient.*; import org.apache.commons.httpclient.methods. Post Method; import org.apache.commons.httpclient.methods.

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For example, you can create an AEM application that enables administrators or other applications to flush the cache.

The HTTP request causes Dispatcher to delete specific files from the cache.

Dispatcher caches the files again only when it recieves a client request for the page.

Deleting cached files ins this manner is appropraite for web sites that are not likely to receive simultaneous requests for the same page. This can be used to flush particular resources without invalidating other parts of the cache, like JSON data that is dynamically created and requires regular flushing independent of the cache (e.g.

For more information see the Configure Replication and Transport Users section of the Security Checklist.

A replication agent on the AEM author instance sends a cache invalidation request to Dispatcher when a page is published.representing data that is obtained from a third-party system to display news, stock tickers, etc.).Issue an HTTP request that causes Dispatcher to delete cached files, and immediately retrieve and recache the file.However, the configuration is made on the authoring environment and then transferred by activating the agent: After configuring, when you activate a page from author to publish, this agent initiates a standard replication.The log includes messages indicating requests coming from your publish server, similar to the following example: To invalidate (or flush) the Dispatcher cache without activating a page, you can issue an HTTP request to the dispatcher.Optionally, the Dispatcher then refreshes the cache with a new copy.

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