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A comment on How CircleCI Processes 4.5M Builds per Month. Parent comment

Re:How CircleCI Processes 4.5M Builds per Month by joevandyk on Friday July 14, 2017 @01:35AM (#14767748)
You are using a large spot instance on ecs?
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Re:How CircleCI Processes 4.5M Builds per Month by clarkdave on Friday July 14, 2017 @06:03AM (#14768700)
Yes, it works very well. Earlier this year AWS automated the process of setting up a cluster backed by a spot fleet[0]. It's a very cost effective way to run lots of containers.

We actually use a combination of on-demand and spot container instances in production to keep costs down; we have some logic to provision more on-demand instances in case of multiple spot outages.

[0] https://aws.amazon.com/blogs/compute/powering-your-amazon-ec...

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