Agreed, but for many services 2 or 3 nines is acceptable.
For the cloud storage system I worked on it wasn’t, and that had different setups for different customers, from a simple 3 node system (the smallest setup, mostly for customers trialing the solution) to a 3 geo setup which has at least 9 nodes in 3 different datacenters.
For the finanicial system, we run a live/live/live setup, where we’re running a cluster in 3 different cloud operators, and the client is expected to know all of them and do failover. That obviously requires little more complexity on the client side, but in many cases developers or organisations control both anyway.
Netflix is obviously at another scale, I can’t comment on what their needs are, or how their solution looks, but I think it’s fair to say they are an exceptional case.
Agreed, but for many services 2 or 3 nines is acceptable.
For the cloud storage system I worked on it wasn’t, and that had different setups for different customers, from a simple 3 node system (the smallest setup, mostly for customers trialing the solution) to a 3 geo setup which has at least 9 nodes in 3 different datacenters.
For the finanicial system, we run a live/live/live setup, where we’re running a cluster in 3 different cloud operators, and the client is expected to know all of them and do failover. That obviously requires little more complexity on the client side, but in many cases developers or organisations control both anyway.
Netflix is obviously at another scale, I can’t comment on what their needs are, or how their solution looks, but I think it’s fair to say they are an exceptional case.