设计模式之策略模式

课程内容：各种k8s部署方式。包括minikube部署，kubeadm部署，kubeasz部署，rancher部署，k3s部署。包括开发测试环境部署k8s，和生产环境部署k8s。

腾讯课堂连接地址https://ke.qq.com/course/478827?taid=4373109931462251&tuin=ba64518

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腾讯课堂连接地址https://ke.qq.com/course/484107?tuin=ba64518

介绍主要的k8s资源的使用配置和命令。包括configmap，pod，service，replicaset，namespace，deployment，daemonset，ingress，pv，pvc，sc，role，rolebinding，clusterrole，clusterrolebinding，secret，serviceaccount，statefulset，job，cronjob，podDisruptionbudget，podSecurityPolicy,networkPolicy,resourceQuota，limitrange，endpoint，event，conponentstatus，node，apiservice，controllerRevision等。

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详细介绍helm命令，学习helm chart语法，编写helm chart。深入分析各项目源码，学习编写helm插件

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1类图

2java示例

public class Test {
   public static void main(String[] args) {
    Strategy s1=new DiscountStrategy();
    Strategy s2=new SubtractStrategy();
    Context context=new Context();
    context.setStrategy(s1);
    System.out.println(context.getFavorablePrice(100));
    context.setStrategy(s2);
    System.out.println(context.getFavorablePrice(100));
   }
}

public class Context {
  private Strategy strategy;

  public void setStrategy(Strategy strategy) {
    this.strategy = strategy;
  }

  public double getFavorablePrice(double price) {
    return this.strategy.price(price);
  }
}

public interface Strategy {
  double price(double price);
}

public class DiscountStrategy implements Strategy {

  @Override
  public double price(double price) {
    return price*0.8;
  }

}

public class SubtractStrategy implements Strategy {

  @Override
  public double price(double price) {
    return price-30>0?(price-30):30;
  }

}