The default Carbon cache service provides a standard method for
caching data in an in-memory map structure. This can greatly
improve performance accessing frequently-used data that is loaded
from a slow resource such as a file system, database, main
frame, web service, etc.
Carbon provides two types of cache implementations:
The TotalCache is used to load all information into the cache.
The cache may be refreshed periodically as a whole or using JMX
The Most-Recently-Used (MRU) Cache is used to keep the most recently
used cached items in memory. This is most useful when the backing
store may have a large amount of data, but a small amount of it
is requested most of the time. The MRU cache hit/miss statistics
can be monitored with JMX and configured in the running system to
Developing a new cache only requires the developer to write a
DataLoader object that the Carbon service can call when it needs
to load the data into the cache.