Tuesday, December 2, 2014

Docker in Production: Reality, Not Hype

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When I started talking with DramaFever in summer 2014 about joining their ops team, one of many appealing factors was that they’d already been running Docker in production since about October 2013 (well before it even went 1.0). Cutting (maybe bleeding) edge? Sounds fun!

But even before I joined and we were acquired by SoftBank (unrelated events! I am not an acquisition magnet, even if both startups I worked at in 2014 were acquired), DramaFever was already a successful startup, and important technology stack decisions are not made by running a Markov text generator against the front page of Hacker News.

So, why Docker? Simply put, it makes development more consistent and deployment more repeatable. Because developers are developing locally all using the same containers, integration is much easier when their code moves on to their EC2-based personal dev environment, the shared dev environment, QA, staging, and production. Because a production instance is serving code from a container, every new autoscaled instance that has any code at all is going to have the correct code.

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