Sorry for my spamming.
I have something wondering in “High performance MySQL” 2nd Edition.
But, I can’t find how to contact the author of this book.(“Baron schwartz”)
So, please explain to me exactly what they mean by this paragraph.
Page : 377 (Line 15)
That’s why this tactic does not scale writes.
It’s only a way to share the serialized-write disadvantage over two servers,
so the “weakest link in the chain” isn’t quite so weak.