Improving Map and Report Response Time

In this section:

In the XML definition file, the PERFORMANCE tag contains several attributes that can be used to improve the speed of processing certain aspects of the integration.

cachedom specifies that the Document Object Model of the XML definition file be held in memory until explicitly cleared with a FLUSHTABLES command. This action prevents the adapter from reading the definition file from disk on every access. This is held once for the server.
cachejs specifies that the JavaScript created from the DOM be held in memory. When cached, the adapter does not have to generate the JavaScript for return to the map or report viewers. This is held once for the server.
cachefilter specifies that the filter list generated by a user selection from the map be held in memory. When the adapter holds the filter list in memory it does not have to query ArcGIS Server for the map features until the selection geometry has been modified by the user. This is held once for each user session.

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Clear Server Internal Cache Information

Issuing the following command from a browser will clear the internal cache of objects at the server:

http://machine/ibi_apps/esri/WfArcConnector.jsp?IBIESRI_command=flushtables

Perform this action after any changes are made to the application XML definition file. Once the cache has been cleared, the next command to the WebFOCUS GIS Adapter will cause it to read the XML definition from disk.

It is a good idea to add this as a "favorite" in your browser.

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Navigate to Previous Map Views

When a map rendering action has been invoked and the user wishes to return to the previous map that was displayed, they can accomplish this by using Ctrl+click on the eraser icon. This action will take them backwards one map image at a time.

This capability is limited by the number of maps that are maintained in memory. See the description of the mapcachedepth attribute for more information.

Note: This action will only navigate backwards to previously displayed maps. There is no facility for navigating forwards again.

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Increasing the Number Of Preserved Map Views

If it is necessary to maintain more map images for navigational purposes, the value of the mapcachedepth attribute may be adjusted. This attribute is specified in the PERFORMANCE tag.

mapcachedepth="6"

Increasing the number will also increase the memory utilization within the application server. Each user session will consume additional memory for each map object cached by the server.

WebFOCUS