Integrating Visio with SharePoint - Visio Services Quick Guide - page 59

This sets the authorization proxy for the Visio Graphics Services to connect to the
SQL Server database and retrieve data without losing the user context.

■ Note Other settings on Visio graphics Services under global Settings include:

Maximum Web Drawing Size : This is the size of web drawing file that can be set, between
1 and 50 MB. The bigger the file size, the slower the rendering and performance.

Minimum Cache Age : This is the minimum duration in minutes each drawing is cached in
memory. Set the value to zero if you need real-time data. however, setting this value to zero
or too low puts a load on CPU and memory usage. The allowable range is 0-34560. This
parameter is valid only for data-driven web drawings.

Maximum Cache Age : This is the value in minutes after which the cached drawings are
removed from memory. You need to set this to zero (in addition to setting the Minimum
Cache Age value to zero) to get real-time data. Setting this value too high will increase
memory consumption but decreases file I/O and load on the CPU. This parameter is valid
only for static web drawings.

Maximum Recalc Duration : This is the value in seconds of the period before an operation
times out before a data refresh. The allowable range is between 10 and 120.

3. Open your SharePoint site and click on Mall.vsdx in the Visio

Library document library to open the Visio diagram in full-
screen mode.

4. Because you have set the SSS, data should display accurately

from the database, with the data graphics populating the
correct information on the shapes.

5. On SQL Server, go to the tblLandmarks table and change the

data in the rows.

6. Return to the SharePoint site and refresh the Visio diagram to

view the real-time changes in the diagram for the shapes, as
shown in Figure 4-39 .