DATAKV-23

spring-data-redis/src/main/java/org/springframework/data/keyvalue/redis/serializer/RedisSerializer.java

@@ -18,6 +18,8 @@ package org.springframework.data.keyvalue.redis.serializer;
 /**
  * Basic interface serialization and deserialization of Objects to byte arrays (binary data). 
  * 
+ * It is recommended that implementations are designed to handle null objects/empty arrays on serialization and deserialization side.
+ * 
  * @author Mark Pollack
  * @author Costin Leau
  */

spring-data-redis/src/main/java/org/springframework/data/keyvalue/redis/serializer/StringRedisSerializer.java

@@ -43,7 +43,7 @@ public class StringRedisSerializer implements RedisSerializer<String> {
 
 	@Override
 	public String deserialize(byte[] bytes) {
-		return new String(bytes, charset);
+		return (SerializerUtils.isEmpty(bytes) ? null : new String(bytes, charset));
 	}
 
 	@Override