Caching Application Block Performance Counters

The following table describes the Caching Application Block performance counters.

Performance Counter	Description
Cache Expiries/sec	The rate at which items were expired from the cache.
Cache Hit Ratio	The ratio of cache hits to reads. A cache hit occurs when the cache contains the requested item.
Cache Hits/sec	The rate at which the cache received requests for items it contained.
Cache Misses/sec	The rate at which the cache received requests for items it did not contain.
Cache Scavenged Items/sec	The rate at which items were scavenged from the cache.
Total # of Cache Access Attempts	The total number of reads from the cache.
Total Cache Entries	The total number of items in the cache.
Total Cache Expiries	The total number of items expired from the cache.
Total Cache Hits	The total number of requests for existing items received by the cache.
Total Cache Misses	The total number of requests for non-existing items received by the cache.
Total Cache Scavenged Items	The total number of items scavenged from the cache.
Total Updated Entries	The total number of items updated in the cache. An update can be either an "add" or a "remove" action.
Updated Entries/sec	The rate at which items in the cache were updated. An update can be either an "add" or a "remove" action.

A rate counter samples an increasing count of events over time and divides the values by the change in time to display a rate of activity. For more information about performance counters, see Overview of Performance Monitoring in the .NET Framework Class Library on MSDN.