Library containing caching functionality used by Digipost projects.
The entry point for creating in-memory caches can be found in the
no.digipost.cache2.inmemory package, which wraps the
Caffeine cache implementation.
In addition to standard key-value cache, this library also offers a
specialized API for caching a shared single object
(SingleCached<V>).
Digipost Cache also supports a fallback-concept, currently implemented as
storing cache values on the file system. In the event of a cache value
Loader
failing (e.g. if it resolves the value over the network or other error-prone I/O),
the last value it successfully loaded will instead be read from a disk-file.
Other ways to store and read values for fallback can be implemented by implementing
FallbackKeeper
for storing a value for fallback, and the already mentioned Loader for
loading an already stored fallback value.