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query GetUserPosts($limit: Int!) {
  user {
    id
    posts(limit: $limit) {
      id
      title
      createdAt
    }
  }
}

Key Learning: Implementing DataLoader for N+1 query prevention

const consumer = new Kafka({
  clientId: 'app-consumer',
  brokers: ['kafka:9092']
}).consumer({ groupId: 'payment-group' });

await consumer.subscribe({ topic: 'transactions' });
await consumer.run({ eachMessage: processor });

Key Learning: Parallel processing with automatic rebalancing

apiVersion: apps/v1
kind: Deployment
metadata:
  name: api-service
spec:
  containers:
  - name: app
    resources:
      requests:
        memory: "256Mi"
        cpu: "250m"
      limits:
        memory: "512Mi"
        cpu: "500m"

Key Learning: Preventing resource starvation in production clusters