pub const MAX_FETCH_QUEUE: usize = 131_072;Expand description
Hard upper bound on the number of keys held in fetch_queue.
fetch_queue is fed only by enqueue_fetch, which is reached after a
key passes quorum verification in run_verification_cycle — attacker junk
keys (no real holder) fail quorum and never reach this stage, so the
bounded-and-fair pending_verify upstream is the primary protection. This
global cap remains as a defence-in-depth memory backstop and is dropped
(consistent with the existing cross-queue-dedup no-op contract of
enqueue_fetch) when full.