Redundancy, Failover & Availability

N+1 and N+2 redundancy, active-passive vs active-active, health checks, failover, and cell-based isolation.

0 / 5 solved

Question Tags Difficulty Success

1. The Lonely Box

single-point-of-failureavailability-zone

Easy —

2. Honest to Death

health-checkcorrelated-failure +1

Medium —

3. Nines You Never Own

availabilitycritical-dependency +2

Medium —

4. Twelve Pods Restart Together

health-checkliveness-probe +2

Medium —

5. Twenty Little Boxes

cell-based-architectureblast-radius

Hard —

Learning Resources

Google SRE Book, embracing risk

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5 of 5 questions here are still unsolved.

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