Sets the maximum size (high watermark) for the client-side object cache as a percentage of the optimal size. The default value is 10%.
If the memory occupied by the objects currently in the cache exceeds the high watermark (maximum object cache size), then the cache automatically begins to free unmarked objects that have a pin count of zero. The cache continues freeing those objects until memory use in the cache reaches the optimal size, or until it runs out of objects eligible for freeing.