After using sccache and Gradle with Buildless for months, years, I have literally never seen these tools mixup or use the wrong binary objects.
Knowing the internals of some of them, I’ve found that build cache clients are way more likely to miss with a cache key misalignment than they are to mixup two objects. I’m sure it’s possible, I’ve just never seen it happen in the wild, after extensive usage.
Generally speaking these tools are very conservative about two inputs matching: an identical file at a different path will cause a cache key change in sccache.
Knowing the internals of some of them, I’ve found that build cache clients are way more likely to miss with a cache key misalignment than they are to mixup two objects. I’m sure it’s possible, I’ve just never seen it happen in the wild, after extensive usage.
Generally speaking these tools are very conservative about two inputs matching: an identical file at a different path will cause a cache key change in sccache.