If you want a retry to prevent that, it must only be done at the outermost layer. Note that what you think is the outermost layer might not be, and that acciden

If you want a retry to prevent that, it must only be done at the outermost layer. Note that what you think is the outermost layer might not be, and that accidentally deploying a retry at a non-outermost layer is much worse than no retry at all.