Badger implementation isn't tested and works not well,
but requires human resources to maintain.
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
Close#1647.
Initially, `Sync: false` was provided because we can already lose
objects cached in memory. However, future changes in writecache will
remove inmemory cache and speed up it via other means.
Signed-off-by: Evgenii Stratonikov <evgeniy@morphbits.ru>
