How FlexCache caching works
Understanding how FlexCache determines the validity of cached data will help you determine whether your data set is a good candidate for a FlexCache.
- Files are the basic caching unit
A file is the basic object in a FlexCache cache, but sometimes only some of a file's data is cached. If the data is cached and valid, a read request for that data is fulfilled without access to the origin volume.
- How cache consistency is achieved
Cache consistency for FlexCache volumes is achieved using three primary techniques: delegations, attribute cache timeouts, and write operation proxy.
- Cache hits and misses
There are several types of cache hits and misses. Factors include whether data is present in the cache, whether the attribute cache timeout has been exceeded, and whether the file's attributes have changed.
