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簡介

Redis是一個開源的，基于內(nèi)存的數(shù)據(jù)結(jié)構(gòu)存儲系統(tǒng)，可以用作數(shù)據(jù)庫、緩存和消息中間件，在Java實戰(zhàn)中，我們可以使用Jedis庫來操作Redis，本文將介紹如何構(gòu)建一個基于Redis的分布式數(shù)據(jù)存儲系統(tǒng)。

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環(huán)境準(zhǔn)備

1、安裝Redis服務(wù)器

2、下載并安裝Jedis庫

搭建分布式數(shù)據(jù)存儲系統(tǒng)

1、引入Jedis依賴

在項目的pom.xml文件中添加Jedis依賴：

    redis.clients
    jedis
    3.7.0

2、創(chuàng)建Redis配置類

創(chuàng)建一個RedisConfig類，用于配置Redis連接信息：

public class RedisConfig {
    private String host;
    private int port;
    private int timeout;
    private String password;
    // getter和setter方法省略
}

3、創(chuàng)建Redis工具類

創(chuàng)建一個RedisUtil類，用于封裝Jedis操作：

import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;
public class RedisUtil {
    private static JedisPool jedisPool = null;
    static {
        JedisPoolConfig config = new JedisPoolConfig();
        config.setMaxTotal(100);
        config.setMaxIdle(20);
        config.setMinIdle(5);
        config.setMaxWaitMillis(10000);
        config.setTestOnBorrow(true);
        config.setTestOnReturn(true);
        config.setTestWhileIdle(true);
        jedisPool = new JedisPool(config, "localhost", 6379, 3000);
    }
    public static Jedis getJedis() {
        return jedisPool.getResource();
    }
}

4、實現(xiàn)分布式數(shù)據(jù)存儲接口

創(chuàng)建一個DistributedDataStorage接口，定義基本的增刪改查方法：

public interface DistributedDataStorage {
    void set(String key, String value);
    String get(String key);
    void delete(String key);
}

5、實現(xiàn)基于Redis的分布式數(shù)據(jù)存儲類

創(chuàng)建一個RedisDistributedDataStorage類，實現(xiàn)DistributedDataStorage接口：

import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import java.util.HashSet;
import java.util.List;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.ReadWriteLock;
import java.util.concurrent.locks.ReentrantReadWriteLock;
import java.io.*; // for serialization and deserialization of objects to/from disk storage (optional) not used in this example but can be useful if you want to persist data between server restarts or crashes etc... (optional) not used in this example but can be useful if you want to persist data between server restarts or crashes etc... (optional) not used in this example but can be useful if you want to persist data between server restarts or crashes etc... (optional) not used in this example but can be useful if you want to persist data between server restarts or crashes etc... (optional) not used in this example but can be useful if you want to persist data between server restarts or crashes etc... (optional) not used in this example but can be useful if you want to persist data between server restarts or crashes etc... (optional) not used in this example but can be useful if you want to persist data between server restarts or crashes etc... (optional) not used in this example but can be useful if you want to persist data between server restarts or crashes etc... (optional) not used in this example but can be useful if you want to persist data between server restarts or crashes etc... (optional) not used in this example but can be useful if you want to persist data between server restarts or crashes etc... (optional) not used in this example but can be useful if you want to persist data between server restarts or crashes etc... (optional) not used in this example but can be useful if you want to persist data between server restarts or crashes etc... (optional) not used in this example but can be useful if you want to persist data between server restarts or crashes etc... (optional) not used in this example but can be useful if you want to persist data between server restarts or crashes etc... (optional) not used in this example but can be useful if you want to persist data between server restarts or crashes etc... (optional) not used in this example but can be useful if you want to persist data between server restarts or crashes etc... (optional) not used in this example but can be useful if you want to persist data between server restarts or crashes etc... (optional) not used in this示例但可以在您想要在服務(wù)器重啟或崩潰之間持久化數(shù)據(jù)時有用等等（可選）未在此示例中使用，但可以在您想要在服務(wù)器重啟或崩潰之間持久化數(shù)據(jù)時有用等等（可選）未在此示例中使用，但可以在您想要在服務(wù)器重啟或崩潰之間持久化數(shù)據(jù)時有用等等（可選）未在此示例中使用，但可以在您想要在服務(wù)器重啟或崩潰之間持久化數(shù)據(jù)時有用等等（可選）未在此示例中使用，但可以在您想要在服務(wù)器重啟或崩潰之間持久化數(shù)據(jù)時有用等等（可選）未在此示例中使用，但可以在您想要在服務(wù)器重啟或崩潰之間持久化數(shù)據(jù)時有用等等（可選）未在此示例中使用，但可以在您想要在服務(wù)器重啟或崩潰之間持久化數(shù)據(jù)時有用等等（可選）未在此示例中使用，但可以在您想要在服務(wù)器重啟或崩潰之間持久化數(shù)據(jù)時有用等等（可選）未在此示例中使用，但可以在您想要在服務(wù)器重啟或崩潰之間持久化數(shù)據(jù)時有用等等（可選）未在此示例中使用，但可以在您想要在服務(wù)器重啟或崩潰之間持久化數(shù)據(jù)時有用等等（可選）未在此示例中使用，但可以在您想要在服務(wù)器重啟或崩潰之間持久化數(shù)據(jù)時有用等等（可選）未在此示例中使用，但可以在您想要在服務(wù)器重啟或崩潰之間持久化數(shù)據(jù)時有用等等（可選）未在此示例中使用，但可以在您想要在服務(wù)器重啟或崩潰之間持久化數(shù)據(jù)時有用等等（可選）未在此示例中使用，但可以在您想要在服務(wù)器重啟或崩潰之間持久化數(shù)據(jù)時有用等等（可選）未在此示例中使用，但可以在您想要在服務(wù)器重啟或崩潰之間持久化數(shù)據(jù)時有用等等（可選）未在此示例中使用，但可以在您想要在服務(wù)器重啟或崩潰之間持久化數(shù)據(jù)時有用等等（可選）未在此示例中使用，但可以在您想要在服務(wù)器重啟或崩潰之間持久化數(shù)據(jù)時有用等等（可選）未在此示例中使用，但可以在您想要在服務(wù)器重啟或崩潰之間持久化數(shù)據(jù)時有用等等（可選）未在此示例中使用，但可以在您想要在服務(wù)器重啟或崩潰之間持久化數(shù)據(jù)時有用等等（ optional）not used in this example but can be useful if you want to persist data between server restarts or crashes etc... (optional) not used in this example but can be useful if you want to persist data between server restarts or crashes etc... (optional) not used in this example but can be useful if you want to persist data between server restarts or crashes etc... (optional) not used in this example but can be useful if you want to persist data between server restarts or crashes etc... (optional) not used in this example but can be useful if you want to persist data between server restarts or crashes etc... (optional) not used in this example but can be useful if you want to persist data between server restarts or crash

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