pub fn tmp_entry_dir(
cache_root: &Path,
key: &CacheKey,
random_suffix: &str,
) -> PathBufExpand description
The name of the two-phase-store tmp directory for key with
the caller-supplied random_suffix, per CACHE-017:
.tmp-<hex-key>-<random>. The caller chooses the random
suffix; the layout helper only joins it into the canonical
shape so concurrent stores of the same key on the same shard
do not collide.