Quick answer: Asset build cache hit rate is a leading indicator of build performance. Low hit rates indicate over-invalidation; track and tune.
Cache misses are the dominant cost in many builds. Visibility informs optimization.
Per-build hit rate
Hits / total. Per build; trend over releases.
Per-asset-type
Texture, mesh, audio cache rates separately. Outliers diagnose.
Investigate drops
Sudden hit rate drop = something is invalidating. Asset, config, or tool change.
Target rate
>95% for stable projects. Below = candidate for tuning.
“Cache hit rate is a quality metric for the build pipeline. Track.”
If your build times grow, the cache rate is the first metric to consult.