User Guide > UserInterface > System Overview > Cache

Cache

Information requested from the databaseA database is an organized collection of data including relevant data structures. is stored in the Server input buffer and can so quickly be read whenever required. This procedure improves system performance as it is less time-consuming than repeatedly calling the database. Keep this in mind when specifying the maximum size of the Server input buffer in the Automation Engine area. This value depends on the memory that is available on your computer.

Column	Description
Name	Area of the Server input buffer: SCRIPT - for script VARA - for variable MQMEM - for message queues ODOC and XREQ - for UserInterfaces USER - for user lists OBJECT_IDNR - or object codes OBJECT_NAME - for object names
Clean Up Limit	Limit for the cache's memory release. To be specified in the Server properties. Data is stored in the cache until its maximum size has been reached. Only in this case, the Server deletes entries that are no longer required. The cache's maximum size is ignored if it is not possible to remove data.
Current size	Currently used cache size
Cache items	Number of all cache entries
Active	The cache is active if this checkbox is checked
Calls	Number of input buffer calls
Hits	Number of entries found in the cache
Hit ratio	Hits of the primary work process in percent
Time	Total time consumed by the work processes for calling the cache