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"We recommend customers with production databases (Crane and up) create a follower running in us-west-2 using the --region flag (this is an alpha feature we are exposing ahead of schedule to prepare for this incident)"

Finally! Excited multi-AZ support is coming to Heroku.

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Regions are comprised of multiple Availability Zones. Heroku has always been running on multiple AZs.

Thanks for the clarification. Meant to say regions.

Looks like only production databases for now, though. Hopefully they'll branch out to us-west for apps as well pretty soon.

I think figuring out how to let third-party addons talk to Heroku in multiple regions (given that there's no internal-to-AWS load balancing/elastic IP type solution) is the hard part with that, although I have no specific knowledge of Heroku to base that on.

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