Do not use write-cache as a read cache: always remove objects from the
WC, not only if an object hasn't been used for some time (LRU cache is
dropped). Use object size (in bytes) as a metric of used space, not an
approximate (and too inaccurate) maximum stored objects number.
Signed-off-by: Pavel Karpy <p.karpy@yadro.com>
It is not used for testing, its absence does not break build. The only one
implementation is placed in the same package.
Signed-off-by: Pavel Karpy <p.karpy@yadro.com>