CK queues now emit two extra gauge fields from the CK-path Lua scripts:
the number of concurrency keys with queued runs (ZCARD of the ckIndex)
and the head-of-line wait of the most-starved key (now minus the oldest
ckIndex score). Both flow through the existing stream into new
max-aggregated columns on the 10s and 5m tiers, and non-CK scripts keep
the 7-field gauge shape.
The queue detail page grows a concurrency-keys section for queues with
CK activity: charts for backlogged keys and most-starved wait, plus a
live per-key table (queued, running, oldest wait) read from the ckIndex
zset, most starved first. Per-key history is intentionally not stored:
key values are user-controlled, so the per-key dimension stays in Redis
where it is bounded by the live backlog.
The queue simulator gains a tenant-hotspot scenario that stages the CK
gauge columns and a live ckIndex so the per-key table and charts render
with data.
Eric Allam
fcc27bc7d6