Query Tuning Methodology
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There are several approaches to solve problems. At an extreme, you can dive headfirst and try making some changes. While this can seem like a time-saver, more often than not, it just causes frustration, and even when the changes appear to work, you do not know for sure whether you really solved the underlying issue or the issue just temporarily got better. Instead, the recommendation is to work methodologically by going through analysis and using monitoring to confirm the effect of the changes. This chapter will introduce you to a methodology that can be useful when solving MySQL problems with the focus on performance tuning.