Is Heroku with Cloud SQL a good match?

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is anyone using Heroku with Cloud SQL (either Postgres or MySQL)? How's the latency?

Cloud SQL and Heroku live in different datacenters. Is network speed an issue?

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1 Answers

I've tried this and had terrible results. Latency was too high for my purposes (100ms) and I was unable to get it to a reasonable level. Heroku is on AWS us-east-1 metal (North Virginia), and I was using a Google cloud sql instance in us-central-1b (Iowa), so in my case this definitely contributed to the problem. As a test, I made a replica of my DB in Google's us-east4 region, which is closer to AWS us-east-1, and it seemed to be an improvement, but was still >50ms for me.

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