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Great write up.

There's likely an alternative scenario where a consultant runs into a different but similar set of problems with a company that has mis-configured their Rails app across multiple AWS EC2 machines, in the wrong security groups, with their EBS settings tuned improperly for their MySQL instances. All resulting in extremely poor performance of their flagship application which is costing them a lot of business.




Was innodb buffer pool as set to default as well?




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