Control the size of the projectdoc request cache.
On each user request the projectdoc Toolbox stores the accessed documents to ensure that the values retrieved from each document stay the same within a request.
This request cache is usually not limited. For the support of the data center version the projectdoc Toolbox allows to limit the size for the least-recently-used cache.
In case there is no capacity problem, it is recommended to not limit the size of the cache.