Release 10.1A: OpenEdge Development:
Progress Dynamics Administration

Progress Dynamics lookup/combo (SmartDataField) cache

Progress Dynamics provides a client-side cache manager that supports the optional caching of data for use by dynamic combos and lookups. This cache for dynamic SmartDataFields (SDFs) reduces network traffic and improves overall performance.

By reducing the amount of data and having the data in a preprocessed and ready-to-consume form on the client, the data-gathering time and any AppServer requests to fetch the data are eliminated, thus improving the overall performance of the application. This is especially noticeable over a slow network.

This SDF cache is a great benefit for performance. However, it might lead to the display of incorrect values if the data in the cache becomes stale. To force retrieval of the latest information with the correct values, you can clear the cache at any time.

SDF caching is optional and configurable. The following sections describe:

Cache operation
When Dynamics does not use the SmartDataField cache
Enabling and disabling the SmartDataField cache
Clearing the SmartDataField cache
Disabling SmartDataField (SDF) cache usage for a specified SDF

For more information on the impact of using the SDF cache for development, see OpenEdge Development: Progress Dynamics Basic Development .