day034redis*jedis

jedis

jedis.jar fastjson.jar包导入

package redis0;

import com.alibaba.fastjson.JSONObject;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.Transaction;

/**
 * Hello world!
 *
 */
public class App 
{
    public static void main( String[] args )
    {
        Jedis jedis = new Jedis("127.0.0.1",6379);

        System.out.println( "Hello World!****redis**"+jedis.ping() );

//        jedis.set("moey","55");
//        jedis.set("out","0");
//        jedis.lpush("list","li1","li2");
//        jedis.sadd("sset","sset","3333");
//        jedis.zadd("zset",11,"nn");
        jedis.hset("hash1","h1","hhh1");

        System.out.println(jedis.get("out")+"***lrange:"+jedis.lrange("list",0,-1)+"*****smembers:"+jedis.smembers("sset")
        +"***zrange"+jedis.zrange("zset",0,-1)+"****hgetall"+jedis.hgetAll("hash1")
        );

        jedis.select(2);

        JSONObject jsonObject = new JSONObject();
        jsonObject.put("one","1111");
        jsonObject.put("two","2222");
        String res = jsonObject.toJSONString();
        System.out.println("res:"+res);
        Transaction transaction = jedis.multi();//开启事务
        transaction.set("user1",res);
        transaction.set("user2",res);
//        transaction.discard();//放弃事务
        transaction.exec();//提交事务
        System.out.println(jedis.get("user1"));
        System.out.println(jedis.get("user2"));
        jedis.close();
    }
}

rdb fork进程将最近一次的数据持久化到rdb文件 唯一缺点最后一次宕机前可能没保存 快照

save 60 10 如果60秒内修改了10次触发快照 redis database

aof 将所有执行过的sql全部持久化到文件 恢复需要全部执行一次 效率低

append onlu file 追加文件