S3 backed vs Blob backed remote cache performance

[Ryang20718]

We currently have an S3 backed cache. Whilst we haven't profiled the performance vs a blob based remote cache performance, I was wondering whether there is a configuration suggestion that is recommended (assuming a lot of small files and some larger ones here and there) in terms of best performance?

[mostynb]

For best performance I recommend fast local storage (I tend to prefer XFS on linux), rather than using the proxy backends.