Now the basic structure is in place:
- cachefilter.cc is the MaxScale filter interface.
- Cache is the actual cache class that will also handle LRU issues.
- SessionCache (sessioncache.cc) is the session specific cache class
that using Cache acts as the cache for a particular session.
If an item is stale, then one SessionCache will update it.
- StorageFactory is the component that is capable of loading a module
providing storage facilities.
- Storage is the actual key/value store.
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