import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.core.script.DefaultRedisScript;
import org.springframework.stereotype.Service;

import java.util.Collections;

@Service
public class RedisPipelineService {

    @Autowired
    private StringRedisTemplate redisTemplate;

    public void batchIncrement(String keyPrefix, int start, int end) {
        // 确保在pipeline中使用的key有相同的前缀
        String[] keys = new String[end - start + 1];
        for (int i = start; i <= end; i++) {
            keys[i - start] = keyPrefix + i;
        }

        // 使用Lua脚本保证原子性
        String luaScript =
            "for i = 1, #KEYS do " +
            "   redis.call('INCR', KEYS[i]) " +
            "end";
        DefaultRedisScript<Long> redisScript = new DefaultRedisScript<>();
        redisScript.setScriptText(luaScript);
        redisScript.setResultType(Long.class);

        // 执行pipeline批量操作
        redisTemplate.executePipelined((pipeline) -> {
            for (String key : keys) {
                pipeline.opsForValue().increment(key); // 自增操作
            }
            pipeline.script().eval(redisScript, Collections.singletonList(keyPrefix + "counter"), keys); // 使用Lua脚本批量自增
        });
    }
}

CREATE OR REPLACE FUNCTION generate_numbers(start_value int, end_value int)
RETURNS SETOF int
LANGUAGE plpgsql
AS $$
BEGIN
    FOR i IN start_value..end_value LOOP
        RETURN NEXT i;
    END LOOP;
    RETURN;
END;
$$;

SELECT * FROM generate_numbers(1, 10);

from redis import Redis, Pipeline

# 创建Redis连接
redis_client = Redis(host='localhost', port=6379, db=0)

# 创建Pipeline对象
pipe = redis_client.pipeline()

# 使用Pipeline添加命令
pipe.set('name', 'John')
pipe.set('age', 25)
pipe.incr('age')

# 执行Pipeline中的命令
pipe.execute()

from redis import Redis, Pipeline

# 创建Redis连接
redis_client = Redis(host='localhost', port=6379, db=0)

# 使用Pipeline装饰器
@redis_client.pipeline()
def pipe_set_get(name, age):
    redis_client.set('name', name)
    redis_client.set('age', age)
    return redis_client.get('name'), redis_client.get('age')

# 调用装饰器函数
name, age = pipe_set_get('John', 25)
print(name, age)

from redis import Redis, Pipeline

# 创建Redis连接
redis_client = Redis(host='localhost', port=6379, db=0)

# 创建Pipeline对象
pipe = Pipeline(redis_client)

# 使用Pipeline添加命令
pipe.set('name', 'John')
pipe.set('age', 25)
pipe.incr('age')

# 执行Pipeline中的命令
results = pipe.execute()
print(results)

import redis

# 连接到Redis服务器
r = redis.Redis(host='localhost', port=6379, db=0)

# 开启管道
pipe = r.pipeline()

# 使用管道批量设置键值对
pipe.set('key1', 'value1')
pipe.set('key2', 'value2')
pipe.set('key3', 'value3')

# 执行管道中的所有命令
pipe.execute()

# 使用管道批量获取键对应的值
pipe.get('key1')
pipe.get('key2')
pipe.get('key3')

# 执行管道中的所有命令并获取结果
values = pipe.execute()

print(values)  # 输出结果列表，包含'key1', 'key2', 'key3'对应的值

import ensurepip
import os
import sys

# 确保 pip 安装器的最新版本
ensurepip.main([])

# 如果你想要检查 pip 是否已经安装，并且安装或升级它
# 可以使用以下代码

# 检查 pip 是否已经安装
pip_already_installed = (
    'pip' in os.listdir(os.path.join(sys.prefix, 'Scripts')) or
    'pip3' in os.listdir(os.path.join(sys.prefix, 'Scripts'))
)

# 如果没有安装 pip，则安装它
if not pip_already_installed:
    ensurepip.main([])

python -m pip install --upgrade pip

python3 -m pip install --upgrade pip

try {
    // 尝试写入数据
    outputStream.write(data);
} catch (IOException e) {
    // 输出错误信息
    System.out.println("IOException caught when trying to write to the client: " + e);
    // 根据需要关闭资源或者重试连接
    // closeConnection(clientSocket);
}

GET /exams/_search
{
  "size": 0,
  "aggs": {
    "average_score": {
      "avg": {
        "field": "score"
      }
    },
    "moving_average": {
      "avg_bucket": {
        "buckets_path": "average_score",
        "window": 2,
        "shift": 30
      }
    }
  }
}

POST _ingest/pipeline/_simulate
{
  "pipeline": {
    "processors": [
      {
        "script": {
          "source": """
            if (ctx.containsKey('message')) {
              def matcher = regex.matcher(ctx.message);
              if (matcher.find()) {
                ctx.timestamp = matcher.group(1);
              }
            }
          """
        }
      }
    ]
  },
  "docs": [
    {
      "_source": {
        "message": "Timestamp: 2019-03-24T09:23:34Z"
      }
    }
  ]
}