Cumulative number of content loads that failed (e.g. HTTP 4xx).
Cumulative count of "hot" evictions — entries dropped while still inside the retain window (recently used). These are working-set evictions, the kind that cause an LOD pop-then-reload. Stays 0 unless the budget's hard ceiling is hit; if it climbs in lockstep with LOD pops, eviction is (part of) the cause.
Pending requests not yet started (waiting on a concurrency slot).