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Artwork panels: how full, the hit rate and evictions (#198)

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Kept bytes against the limit was a flat line once the cache filled. Now a
percentage of the limit beside the share served from disk, and the images each
sweep evicts. The counter shipped minutes ago as ipx_art_trimmed_total is
renamed ipx_art_evicted_total before anything came to read it.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Ray Slakinski
2026-10-11 20:17:56 +00:00
parent f032d50ed3
commit 8dc6dd4ce6
6 changed files with 25 additions and 11 deletions
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.claude/skills/ipx-prod-check/SKILL.md
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@@ -85,7 +85,7 @@ from 2026-10-11 15:15 UTC. All gauges:
| `ipx_deadair_backlog`, `ipx_deadair_busy_seconds` | files of shows with DeadAir on not yet looked at (episodes everyone heard through stay counted); how long it has been on its file |
| `ipx_feed_retries` | feeds waiting to retry a failed name lookup |
| `ipx_art_cache_bytes`, `ipx_art_cache_limit_bytes` | artwork kept, as of the last sweep, and the most kept: kept sits at the limit by design |
| `ipx_art_trimmed_total` | counter: images the sweep threw out to stay under the limit; many at every sweep means the limit is too small |
| `ipx_art_evicted_total`, `ipx_art_requests_total{result="hit"\|"miss"}` | counters: images the sweep threw out to stay under the limit, and artwork served from disk or fetched from the publisher; many evicted at every sweep with a falling hit rate means the limit is too small |
| `ipx_feeds`, `ipx_downloads_pending`, `ipx_files_downloaded` | the library, as the healthcheck last counted it (every 30 s) |
## The checks