3 ms·

What are they discarding? It's more of a FIFO isn't it? I assume that when they have no new requests they are scanning books based on some other criteria.

• cjubb39 12y ago
  Perhaps it's best described just as an infinite-sized cache. I would assume they have enough request to very rarely be idle.
  • gwern 12y ago
    Copy-on-write might be a better concept to allude to. You're making a new version, but efficiently, on demand.