update redis config

src/main/java/com/peanut/config/MyRedissonConfig.java

@@ -2,6 +2,7 @@ package com.peanut.config;
 
 import org.redisson.Redisson;
 import org.redisson.api.RedissonClient;
+import org.redisson.codec.JsonJacksonCodec;
 import org.redisson.config.Config;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.context.annotation.Bean;
@@ -19,6 +20,7 @@ public class MyRedissonConfig {
     @Bean
     public RedissonClient redissonClient() {
         Config config = new Config();
+        config.setCodec(new JsonJacksonCodec());
         config.useSingleServer().setAddress(redisAddress).setPassword(redisPassword);
         RedissonClient redissonClient = Redisson.create(config);
         return redissonClient;