// 假设我们有一个简化的NameServer服务器启动类
public class NameServerStartup {

    // 主配置类，用于配置NameServer的基本属性
    private final NameServerConfig config;

    public NameServerStartup(NameServerConfig config) {
        this.config = config;
    }

    public void run() throws Exception {
        // 创建Netty服务端用于接收客户端连接
        final NettyRemotingServer nettyServer = new NettyRemotingServer(new NettyServerConfig());
        // 设置处理器
        nettyServer.registerProcessor(RequestCode.CHECK_TRANSACTION_STATE, new CheckTransactionStateProcessor(null), null);
        // 省略其他处理器的注册...

        // 启动服务端
        nettyServer.start();

        // 启动定时任务，处理事务状态
        // 省略定时任务的启动代码...

        // 启动NameServer服务
        System.out.printf("The NameServer boot success. serializeType=%s%n", config.getSerializeTypeConfig().getCode());
    }

    public static void main(String[] args) throws Exception {
        // 读取配置文件，创建配置对象
        NameServerConfig config = new NameServerConfig();
        // 省略配置文件读取和解析的代码...

        // 启动NameServer
        new NameServerStartup(config).run();
    }
}

from django.http import HttpResponse

class CheckIPMiddleware(object):
    def process_request(self, request):
        ip_address = request.META.get('REMOTE_ADDR')
        if ip_address != '127.0.0.1':
            return HttpResponse("Forbidden", status=403)

from django.http import HttpResponseRedirect
from django.core.urlresolvers import reverse

class LoginRequiredMiddleware(object):
    def process_view(self, request, callback, callback_args, callback_kwargs):
        if not request.user.is_authenticated():
            return HttpResponseRedirect(reverse('login'))

class CustomHeaderMiddleware(object):
    def process_response(self, request, response):
        response['Custom-Header'] = 'Custom Value'
        return response

// 安装并引入必要的模块
const express = require('express');
const helmet = require('helmet'); // 使用helmet来增强应用的安全性

// 创建Express应用
const app = express();

// 使用中间件来增强安全性
app.use(helmet());

// 定义路由和处理逻辑
app.get('/', (req, res) => {
  res.send('Hello, World!');
});

// 监听3000端口
app.listen(3000, () => {
  console.log('Server is running on port 3000');
});

kubectl apply -f - <<EOF
apiVersion: v1
kind: Namespace
metadata:
  name: redis-namespace
---
apiVersion: apps.kruise.io/v1alpha1
kind: StatefulSet
metadata:
  name: redis
  namespace: redis-namespace
spec:
  replicas: 3
  selector:
    matchLabels:
      app: redis
  serviceName: "redis"
  template:
    metadata:
      labels:
        app: redis
    spec:
      containers:
      - name: redis
        image: redis:5.0.9
        ports:
        - containerPort: 6379
        command:
        - redis-server
        - "--appendonly"
        - "yes"
        resources:
          requests:
            cpu: "500m"
            memory: "1Gi"
          limits:
            cpu: "1"
            memory: "2Gi"
        volumeMounts:
        - name: data
          mountPath: /data
  volumeClaimTemplates:
  - metadata:
      name: data
    spec:
      accessModes: [ "ReadWriteOnce" ]
      resources:
        requests:
          storage: 10Gi
---
apiVersion: v1
kind: Service
metadata:
  name: redis
  namespace: redis-namespace
spec:
  ports:
  - port: 6379
    targetPort: 6379
  selector:
    app: redis
EOF

import requests

def get_html(url):
    try:
        response = requests.get(url)
        if response.status_code == 200:
            return response.text
        else:
            return "网页无法访问"
    except requests.exceptions.RequestException:
        return "请求出错"

url = "http://example.com"
print(get_html(url))

from opencrawler.server.api import OpenCrawler

# 初始化Open Crawler客户端
oc = OpenCrawler(host='localhost', port=8000)

# 创建一个新的索引
index_id = oc.create_index(name='example_index')

# 添加文档到索引
document_id = oc.add_document(index_id=index_id, url='http://example.com/page1', content='This is an example page.')

# 提交索引变更
oc.commit(index_id=index_id)

# 搜索文档
results = oc.search(index_id=index_id, query='example')

# 打印搜索结果
print(results)

pip install elasticsearch

from elasticsearch import Elasticsearch

# 连接到Elasticsearch集群
es = Elasticsearch(["http://localhost:9200"])

# 添加一些文档
doc1 = {
    'author': 'test',
    'text': 'Elasticsearch is a distributed document store',
    'timestamp': '2023-04-01T12:00:00'
}

doc2 = {
    'author': 'example',
    'text': 'Elasticsearch is very useful for full-text search',
    'timestamp': '2023-04-02T12:00:00'
}

# 索引文档到Elasticsearch
res = es.index(index="test-index", id=1, document=doc1)
print(res['result'])

res = es.index(index="test-index", id=2, document=doc2)
print(res['result'])

<template>
  <a-checkbox-group v-model="checkedList" @change="onCheckboxChange">
    <a-row>
      <a-col :span="8" v-for="(item, index) in list" :key="index">
        <a-checkbox :value="item.id" :disabled="isDisabled(item.id)">{{ item.name }}</a-checkbox>
      </a-col>
    </a-row>
  </a-checkbox-group>
</template>

<script>
export default {
  data() {
    return {
      checkedList: [], // 绑定的数组，存储选中的值
      list: [
        // 假设的列表数据
        { id: 1, name: '选项1' },
        { id: 2, name: '选项2' },
        // ...更多选项
      ],
      maxCount: 3, // 最多可选择的数量
    };
  },
  methods: {
    onCheckboxChange(checkedValues) {
      // 可以在这里处理其他逻辑
    },
    isDisabled(value) {
      // 如果已选择的数量达到最大值，则禁用未选中的选项
      return this.checkedList.length >= this.maxCount && !this.checkedList.includes(value);
    }
  }
};
</script>