> > Squid-ssd addresses those challenges well: > 1.User reads from SSD; back-to-origin fetches written to SSD > 2.Objects evicted from SSD to HDD, and from HDD to nothing > 3.Objects promoted to SSD from HDD to avoid back-to-origin fetches > Can you comment on how a squid-specific solution compares to a more general ssd caching solution like bcache? James