A: SQL Tuning
Use explain the analysis is complete, if efficiency is not high, generally the following reasons
Index introduction, see: https://blog.51cto.com/11009785/2367976
Failure Index, see: https://blog.51cto.com/11009785/2406488
II: Architecture Tuning
Please refer to: https://blog.51cto.com/11009785/2396762
III: Tuning Parameter
Four: Hardware Tuning