In AEM we can clear dispatcher cache on page activation by adding dispatcher flush agent but if we have Akamai on top of dispatcher as CDN then we need to manually clear Akamai Cache by going to akamai console. Akamai provides fast purge API and using that we can clear page cache using single URL, CPCode, multiple urls etc We can integrate Akamai Fast Purge API with replication agent so that for every page activation akamai cache gets cleared. To integrate with Akamai Fast Purge we need below details (Contact Akamai for details related to your account) 1) Access Token 2) Client Secret 3) Client Token 4) Akamai Host
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On Author instance.
Replication agents are central to Adobe Experience Manager (AEM) as the mechanism used to:
1. Publish (activate) content from an author to a publish environment.
2. Explicitly flush content from the Dispatcher cache.
3. Return user input (for example, form input) from the publish environment to the author's environment (under control of the author's environment).
Even if you have multiple publishers, multiple replication agents would be on the Author.