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0 pointsgizmodo594y ago0 comments

It doesn’t matter how much of resiliency engineering you do. Having everything in a single AZ is a risk. If this is acceptable then it’s fine if not you need to think of multi az from day 1.

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3 comments · 2 top-level

dogecoinbase4y ago· 1 in thread

Auth0 ran in six AZs in two regions[1] and went down today[2], because they picked the wrong two regions. How many regions and AZs should someone pay for before they get reliability?

1: https://auth0.com/blog/auth0-architecture-running-in-multipl... 2: https://twitter.com/auth0/status/1471159935597793290

brewdad4y ago

At a minimum they should have chosen regions not in the same time zone or general geographic area. US-West 1 and US-West 2 might well be safeguarding against a server failure but is not a disaster plan. If your customers are global, choosing multiple continents is probably prudent.

Corrado4y ago

Whelp, I guess you're not using Cognito then. It has no user account syncing feature so you can't have a user group in more than one region. Grrrrr!

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