High Performance MySQL By Schwartz, Baron (eBook – 2012 )
Database professionals will want to read this well written book. It discusses the different DB engines that can be used with Mysql, how they have changed with Mysql versions, and how to get the best performance while scaling up across multiple servers. Profiling is discussed in detail.
This book is available as ebook: load it into OverDrive, and read it on the bus!.