Webdynpro cache

Question

Hello .
I have written the following code to display an image in a webdynpro table cell using image UI
with the  cached URL.Please see the code below.
It works fine. this is using NW04
IWDCachedWebResource cachedResource = null;
     cachedResource = WDWebResource.getWebResource(binaryimg,WDWebResourceType.JPG_IMAGE );
         String  imgUrl = cachedResource.getURL();
and map this url to context and to image UI in table cell.
but when I create an iview and display in the Portal,it displayes the image only for
approximately 2 min.then it will disapper from the table cell.How I an I cache
the image  for longer periods.?
does any of these server parameters in Visual Admin for webdynpro has any effect??
1.sap.sld.cacheExpirationTime
2. sap.sld.cacheInvalidationTime
any other solutions are welcome.
regards
John

Answer 1

according to my understanding of your quastion is that you are cliking a button providin some data to the bapi, right, then every time the bapi is getting called, if you want to avoid this, you can get all the values in anode and you can do the validations in the webdynpro application in the front end also, that will increase the performance of your application, if the user entered value is correct then only you can excutres the bapi in the backend system.
Cheers,
Apparao