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Redis Map 增长问题

原因是redis中的hmset命令合并新增的和原先的(重复的覆盖),而不是重置,需要先del后再新增

Redis Map 增长问题

原因:

redis中的hmset命令合并新增的和原先的(重复的覆盖),而不是重置,需要先del后再新增。下面是验证过程:

redis命令验证:

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127.0.0.1:0>hmset TestMap test1 "11111" test2 "22222"
"OK"

127.0.0.1:0>hget TestMap test1
"11111"

127.0.0.1:0>hmset TestMap test2 "22222"
"OK"

127.0.0.1:0>hget TestMap test1
"11111"

java验证

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import com.ems.dsp.util.RedisClient;
import org.junit.jupiter.api.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

import java.util.HashMap;
import java.util.Map;

@RunWith(SpringRunner.class)
@SpringBootTest
public class JedisTest {

@Autowired
private RedisClient redisClient;

@Test
public void redisDemo(){
String key = "TestMap";

Map<String,String> map1 = new HashMap<>();
map1.put("test1","11111");
map1.put("test2","22222");
redisClient.hmset(key, map1);
System.out.println("########################################################");
System.out.println(redisClient.hmget(key, "test1"));
System.out.println("########################################################");
// 结果为11111

Map<String,String> map2 = new HashMap<>();
map2.put("test2","22222");
redisClient.hmset(key, map2);
System.out.println("********************************************************");
System.out.println(redisClient.hmget(key, "test1"));
System.out.println("********************************************************");
// 结果依然为11111
}
}

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