Redundancy is insanely expensive especially for SaaS companies where the biggest cost is cloud.
Are customers willing to pay companies for that redundancy? I think not. Once every few years outage for 3 hours is fine for non critical services.
Are customers willing to pay companies for that redundancy? I think not. Once every few years outage for 3 hours is fine for non critical services.
IMO, going multi AZ or multi-cloud adds a good amount of complexity.
TBH I don't care if last.fm doesn't work for 8 hours a year, that isn't a big deal. My bank? Yeah that should work.
Servers are easy. I’m sure most companies already have servers that can be spun up. Things related to data are not.
And no, data replication or load balancing is not easy, nor cheap.
* Automated. * Scoped to business critical services. Typically not including many of the 3rd party services. * Uses data replication, which is a feature in any modern cloud. * Load balancing, by DNS basically for free or a real LB somewhere on the edge.
If you fail at this you probably fail at disaster recovery too or any good practice on how to run things in the cloud. Most likely because of very poor architecture.
It's easy to replicate multi-tenancy for RDS since it's built in. But it's not cheap. It's double, triple the price.
That right there means the business model is fucked to begin with. If you can't have a resilient service, then you should not be offering that service. Period. Solution: we were fine before the cloud, just a little slower. No problem going back to that for some things. Not everything has to be just in time at lowest possible cost.