Make the cache stats count what is cached, fetched and transcoded (closes #56)

Cache.Stats read request_cache and output_content, which nothing writes, so TotalItems and TotalSizeBytes were always 0. They now count source_content plus variant_content and use UsageBytes; a disabled disk cache reports 0 for both. The upstream fetch count and bytes and the transform count never moved: Get now passes the bytes it fetched (including those read before a failed body read) and counts each successful transcode. Hits, misses and these counters are written with context.WithoutCancel, so a client disconnect or the request timeout no longer loses them. The unused tables stay; metaCache is #70. Model: opus-5-5
2026-09-29 05:25:10 +02:00
parent ed3f8770e6
commit e98b998cb6
5 changed files with 390 additions and 41 deletions
@@ -163,9 +163,11 @@ type ImageCache interface {

 // CacheStats contains cache statistics
 type CacheStats struct {
-	// TotalItems is the number of cached items
+	// TotalItems is the number of cached source images plus processed
+	// variants
 	TotalItems int64
-	// TotalSizeBytes is the total size of cached content
+	// TotalSizeBytes is the total size of cached source images and
+	// processed variants
 	TotalSizeBytes int64
 	// HitCount is the number of cache hits
 	HitCount int64