Amazon RDS MySQL instance performs very slow

Question

I have published my website on Amazon EC2 (Singapore region) and I have used MySQL RDS instance for the data storage. Everything is working very fine except performance.

Answer 1

For me, it was nothing to do with MySQL but rather the instance type I was on t2.medium. The problem is I ran out of CPU credits because the load on the DB was too high and the balance kept going down until finally, I was getting far fewer credits hourly than were needed.

Here is what I saw in RDS CloudWatch under CPU Credit Usage:

If you have the same problem it may be time to switch to a different instance. Here is the list of instance types:

https://aws.amazon.com/rds/instance-types/

Hope this helps.