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Sending traffic between AZs doesn’t necessarily improve availability and can decrease it. Each of your services can be multi-az, but have hosts that talk just t
by cowsandmilk 2y ago
Sending traffic between AZs doesn’t necessarily improve availability and can decrease it. Each of your services can be multi-az, but have hosts that talk just to other endpoints in their AZ.
- thayne 2y agoUnless your app is completely stateless, you will need some level of communication across AZs. And you often want cross-zone routing on your load balancers so that if you lose all the instances in one AZ traffic will still get routed to healthy instances.