Apache Dispatcher Sling Dynamic Include (SDI) with TTL

Question

I'm Using Adobe AEM 6.1. Now I want to use Sling Dynamic Include 3.0.

1. Installed the Sling Dynamic Include on the Publish instance
2. I configured the Dispatcher with help of the following Documentation:
   • https://helpx.adobe.com/experience-manager/kt/platform-repository/using/sling-dynamic-include-technical-video-setup.html
   • https://github.com/Cognifide/Sling-Dynamic-Include

I also added the /enableTTL "1" in the dispatcher.any file inside of the cache tag, and added the headers in the cache tag

 /headers
 {
    "Cache-Control"
    "Content-Disposition"
    "Content-Type"
    "Expires"
    "Last-Modified"
    "X-Content-Type-Options"
 }

The Sling Dynamic Include works good. But the Problem is that the TTL Parameter is ignored. And I know I need AEM Dispatcher 4.1.11 and higher to use TTL. Well I'm using Dispatcher version 4.2.2 with an apache 2.2. Maybe I need an higher apache version that the TTL works?

My understanding of the TTL is, that I want to cache a file for 5 min, so in this 5 min, the users always get the cached document, and after this 5 min the dispatcher delete the old cached file, and get a new one.

Have somebody any idea? How can I check what is going wrong? I don't get an error or something, just the TTL param is ignored.

Here The Working SDI Include in my HTML

I think with the path is something wrong. After the "...ttl.html" is the resource Type "/cbz/components/elements/bookingcalendar". I think it should end by the .html. But I don't know why this is happen.

The Config

Answer 1

Judging by the HTML rendered, you're dealing with a synthetic resource.

As far as I know, until SDI version 3.1.2, the caching of such resources with TTL was not possible (see SLING-7785 due to the way the resource type was appended as a suffix. Although, to be honest, I'm not sure why you do get a cached document at all. It's hard to tell without looking at the dispatcher cache config.

I suggest you try upgrading SDI to 3.1.2 or higher and using the newly provided configuration.

On a side note, Cognifide no longer maintains the SDI documentation you linked to. The project has been donated to Apache Sling and the most up-to-date docs can be found on the official Apache Sling Website

I've noticed that the official docs do not yet describe this feature so I raised SLING-7914 . If you get it working, feel free to contribute a short how-to guide.