On August 24th, we announced the implementation of rate limiting for Docker container pulls for some users. Beginning November 2, Docker will begin phasing in limits of Docker container pull requests for anonymous and free authenticated users. The limits will be fully enforced Monday, November 2, from 9-10 am PT, and then reduced to 5,000 pulls per 6 hours for anonymous and free users. This will briefly inform some users whether they are exceeding the limits, but allow service to resume within an hour. The limits will be gradually reduced over a number of weeks until the final levels (where anonymous users are limited to 100 container pulls per six hours and free users limited to 200 container pulls per six hours) are reached. All paid Docker accounts (Pro. Team or Legacy subscribers) have up to 50,000 pulls in a 24 hour period.

The rationale behind the phased implementation periods is to allow our anonymous and free tier users and integrators to see the places where anonymous CI/CD processes are pulling container images. This will allow Docker users to address the limitations in one of two ways: upgrade to a Docker Pro or Docker Team subscription, or adjust application pipelines to accommodate the container image request limits. After a lot of thought and discussion, we’ve decided on this gradual, phased increase over the upcoming weeks instead of an abrupt implementation of the policy. An up-do-date status update on rate limitations is available at https://www.docker.com/increase-rate-limits.

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