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I've worked on a project that migrated from MySQL on EC2 to MySQL on RDS and then back to EC2 because the performance was massively worse — a process that took
by chc 8y ago
I've worked on a project that migrated from MySQL on EC2 to MySQL on RDS and then back to EC2 because the performance was massively worse — a process that took a few hours before now took days. We contacted Amazon support to try and resolve whatever was going wrong with the RDS instance, and their response was basically "Yeah, we don't guarantee performance on RDS. If you want to maximize performance, you should run your own DB on EC2."
- nodesocket 8y agoIt makes sense because of the dependency on EBS, but what instance type were you using on RDS? Using provisioned IOPS RDS disk?
- chc 8y agoWe tried a few very large instance types to see if that made any difference, and provisioned IOPS did help, but everything was still slower than the EC2 DB and it cost a lot more on top of that.