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Resilience and fault tolerance

Site Reliability Engineer

Resilience and fault tolerance questions

21 questions on Resilience and fault tolerance for site reliability engineers, easiest first.

Easy 4

What is an SLO?easy
Readiness vs liveness probeseasy
Idempotent requestseasy
Downtime at 99.95%easy

Medium 9

Why add jitter to retries?medium
Circuit breaker half-open statemedium
PodDisruptionBudgetmedium
Timeouts in Go clientsmedium
Three services in a chainmedium
Two replicas in parallelmedium
Availability from MTBF and MTTRmedium
Degrading instead of failingmedium
One slow dependency takes all threadsmedium

Hard 8

Retry amplificationhard
Handling overloadhard
Running a safe chaos experimenthard
Outage that outlives its triggerhard
Wasted work after timeoutshard
What to drop when overloadedhard
Replacing a config file safelyhard
Failure hidden inside a functionhard

More Site Reliability Engineer skills

Linux and shell 193 SLOs and incident management 101 Observability and monitoring 74 Performance and debugging 66 Networking 30 Kubernetes and containers 20 Mobile app development 20 Web application security 16 Filesystem 15 Sli 12 Processes 11 Error Budget 10 Kernel 9 System design 9 Disk Io 7 Ssh 7 Signals 6 Logs 6 Cpu 5 Stakeholder management and communication 5 Boot 5 Incident response and malware 4 KPIs and business metrics 4 Infrastructure as code 4

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