Function cacache::metadata_sync

pub fn metadata_sync<P, K>(cache: P, key: K) -> Result<Option<Metadata>> where
    P: AsRef<Path>,
    K: AsRef<str>, 

Gets metadata for a certain key.

Note that the existence of a metadata entry is not a guarantee that the underlying data exists, since they are stored and managed independently. To verify that the underlying associated data exists, use exists_sync().