// WriteCached returns a blockstore that caches up to |size| unique writes (bs.Put).
func WriteCached(bs Blockstore, size int) (Blockstore, error) {
c, err := lru.New(size)
if err != nil {
return nil, err
}
return &writecache{blockstore: bs, cache: c}, nil
}
// NewDatastore constructs a new LRU Datastore with given capacity.
func NewDatastore(capacity int) (*Datastore, error) {
cache, err := lru.New(capacity)
if err != nil {
return nil, err
}
return &Datastore{cache: cache}, nil
}