Yep - I did something similar on the Fortnum & Mason site. I cache the product catalog across multiple instances across multiple hosts in EOSharedEditingContexts, and have an admin app to manage the product catalog and content management. When the admin person hs made changes and is ready, he hits a button to "reload the instances". The way this works is the admin app has a WOLongResponsePage that sends a direct action to each instances (I know I have between 5 and 20) using a WOHTTPConnection, waiting for the response. The direct action is implemented in the main shopping application, and when the instance receives the request, it refreshes the EOSharedEditingContext holding the product catalog and the content.
Not at liberty to share code, I'm afraid...
Geoff
On Tuesday, November 18, 2003, at 02:52PM, Karl <email@hidden> wrote:
>Hi List,
>
>Has anyone had any experience with multiple instances of WO when you
>are using the shared editing context?
>
>We are keeping a lot of lookup tables in the sharedEC for performance
>reasons and go through the process of taking a local copy, updating in
>a privateEC, etc, when we need to update a value.
>
>This all works just fine when you have just one instance of the app
>running. The sharedEC observes the change in the privateEC and simply
>updates itself (we specifically fetch any inserts that we make into the
>privateEC).
>
>Has anyone had any experience of running multiple instances and had to
>deal with the fact that the sharedEC doesn't notice changes made by
>other instances?
>
>It looks like we have to implement our own notification framework to
>keep the sharedECs in sync across multiple instances on multiple
>servers.
>
>Let me know if I am missing something....
>
>Karl
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