fog
add concurrency to multipart_save method
my (naive) attempt to fix https://github.com/fog/fog-aws/issues/738 and https://github.com/fog/fog-aws/issues/737
@avoidik - This seems like a pretty reasonable next step to try to me. Have you had a chance to test it? Were there additional parts you wanted to change before we proceed?
@avoidik - also, the head error appears to be on main and unrelated to this, I'll see about addressing that separately.
@geemus I didn't test it thoroughly, I could run yet another performance benchmark again after your minimal input and some kind of a review
@avoidik Yeah, that sounds good. Overall this code appears to align well with the copy code that was already here, but I don't have direct experience using that either. It will also be helpful to know if and how much it helps with the performance issues you originally noted. Thanks!