cache

type Cache interface {
	// Put stores the given (key,value) pair, replacing existing value if key already exists.
	Put(key interface{}, value Value) error
	// Get returns the value for a given key.
	Get(key interface{}) (Value, error)
	// Len returns number of elements in the cache.
	Len() int
}

type CacheableBlock struct {
	*block.Block
}

type CacheableFilter struct {
	*gcs.Filter
}

type Value interface {
	// Size determines how big this entry would be in the cache. For example, for a filter, it could be the size of the
	// filter in bytes.
	Size() (rv uint64, e error)
}