MySQL Related Performance Tuning.
https://www.askapache.com/mysql/mysql-performance-tuning/
https://www.digitalocean.com/community/tutorials/how-to-optimize-queries-and-tables-in-mysql-and-mariadb-on-a-vps
DynamoDB Performance Tuning
http://highscalability.com/blog/2013/4/3/5-steps-to-benchmarking-managed-nosql-dynamodb-vs-cassandra.html
