Level 4: Reliability, security & cloud · L4.3 Fault tolerance, disaster recovery & multi-region
Failure domains and redundancy
Place redundancy across instances, AZs and regions.
12 min · Pro
What you take away
- A failure domain is the set of things that fail together — and the ones that bite are not physical: a deploy, a config push, a certificate, a shared dependency.
And 3 more inside the class, in Pro.
How the class is laid out
- The problem
- The simple version
- Enumerate the domains, including the ones with no location
- Static stability: do not need the control plane
- Check your understanding