First Round Interview

Several Probe Methods in k8s

• livenessProbe detects deadlocks and determines when a container should be restarted.
• readinessProbe checks if the container is ready to receive traffic.
• startupProbe checks if the service inside the container has started up. The startup probe can be used for slow-starting containers to perform liveness checks, preventing them from being killed by kubelet before they start running.

Data Consistency Issues with Dual-Writing or Triple-Writing Across Regions

Pod Resource Node Preemption Solution

Enable node options in kubelet: --cpu-manager-policy=static

How to Implement Scaling in k8s Services

HPA (Horizontal Pod Autoscaler) automatically adjusts the number of replicas of a Deployment based on CPU utilization or custom metrics.

Troubleshooting Experience

How to Design an Alert Architecture

Pain Points in Current Work

Which Business Metrics Would You Focus On

Data Format of Ad Auction Returns

A LeetCode Question: Restore IP Addresses