使用Jedis实现在Java应用中对Redis数据库的各种操作

Jedis 是一个 Java 客户端库，用于连接和操作 Redis 数据库。

import redis.clients.jedis.Jedis;

/**
 * @author: wenwan4e
 * @Date: 2022/9/6 9:44
 */
public class JedisTest {

    private static final String REDIS_HOST = "xx.xxx.xx.xxx";
    private static final int REDIS_PORT = 6379;
    private static final String redisPassword = "xxxxxxxxxxx";

    public static void main(String[] args0) throws Exception {

        //Create Jedis instance and connect to Redis server
        Jedis jedis = new Jedis(REDIS_HOST, REDIS_PORT);
        jedis.auth(redisPassword);
        //Set a key-value pair
        jedis.set("test1","hello!");
        System.out.println("test1: "+jedis.get("test1"));
        //delete key-value pair
        jedis.del("test1");
        System.out.println("test1: "+jedis.get("test1"));
        //Hash
        jedis.hset("user","name","wenwan4e");
        System.out.println("get user name: "+jedis.hget("user","name"));
        jedis.del("user");
        //List
        jedis.lpush("list1","a","b","c","a");
        System.out.println("list1: "+jedis.lrange("list1",0,-1));
        jedis.del("list1");
        jedis.rpush("list2","a","b","c","a");
        System.out.println("list2: "+jedis.lrange("list2",0,-1));
        jedis.del("list2");
        //Set
        jedis.sadd("set","a","d","c","a","b");
        System.out.println("set: "+jedis.smembers("set"));
        jedis.del("set");
        //Zset
        jedis.zadd("zset",1,"a");
        jedis.zadd("zset",2,"c");
        jedis.zadd("zset",3,"a");
        jedis.zadd("zset",4,"b");
        System.out.println("zset: "+jedis.zrange("zset",0,-1));
        jedis.del("zset");
    }
}

> Task :JedisTest.main()
test1: hello!
test1: null
get user name: wenwan4e
list1: [a, c, b, a]
list2: [a, b, c, a]
set: [a, b, c, d]
zset: [c, a, b]

在高并发的情况下，使用JedisPool。

public static void main(String[] args0) throws Exception {
    //Configure connection pool
    JedisPoolConfig jedisPoolConfig = new JedisPoolConfig();
    jedisPoolConfig.setMaxTotal(100); //maximum connections
    jedisPoolConfig.setMaxIdle(30); //Maximum number of idle connections
    jedisPoolConfig.setMinIdle(5); //Minimum number of idle connections
    jedisPoolConfig.setMaxWait(Duration.ofMillis(10000)); //Maximum waiting time for obtaining a connection
    jedisPoolConfig.setBlockWhenExhausted(true); //Whether to block when the connection is exhausted
    //Create connection pool
    JedisPool jedisPool = new JedisPool(jedisPoolConfig,REDIS_HOST, REDIS_PORT,1000,redisPassword);
    //Retrieve Jedis instances from the connection pool
    Jedis jedis = jedisPool.getResource();
    jedis.set("pool_key", "pool_value");
    System.out.println("pool_key : " + jedis.get("pool_key"));
    jedis.del("pool_key");
}

> Task :JedisTest.main()
pool_key : pool_value