Deserialize into another class - Spring data redis

Working on Spring Data Redis I serialize an object and store it into Redis. The serialization strategy is Jackson2JsonRedisSerializer. So, suppose my bean is Sample.java with some properties prop1, prop2 below is how it is added into the cache

\xAC\xED\x00\x05sr\x00'com.main.model.Sample\x90\x91\xFB4\xDD\x9D\xE1\xBB\x02\x00\x11J\x00\x0Bprop1J\x00\x0Aprop2J

As we can see the object type info Sample is also stored with its fully qualified name.

Now there are multiple services which work on this entry by deserializing and updating it writing back into cache. (The models/beans in various services have different fully qualified names)

The problem occurs when a different service tries to deserialize it failing with ClassNotFoundException

    org.springframework.data.redis.serializer.SerializationException:         
       Cannot serialize; nested exception is 
       org.springframework.core.serializer.support.SerializationFailedException: 
       Failed to deserialize object type; 
       nested exception is java.lang.ClassNotFoundException: com.xyz.model.BasicSample

Here is a sample

Service 1

    @Override
    @Cacheable(value = "sample", key = "{ #sample.sampleId }", unless = "#result == null")
    public Sample fetchSample(Sample sample) {...}

Service 2

    @Override
    @Cacheable(value = "sample", key = "{ #sample.sampleId }", unless = "#result == null")
    public BasicSample fetchBasicSample(BasicSample sample) {...}

Is there a way to either

• Stop storing this info

• Ignore this while deserialization

• A way to deserialize into a different class object with same properties

I just spent half a day on the same issue so leaving the answer here for the future generations:

Generally, the Spring Data Redis will use the full class name for the _class key, but the dev can customize it with a @TypeAlias("someAlias") annotation. This will override the _class field.

Thus you can define the two classes as:

package com.example.service1;

import org.springframework.data.annotation.TypeAlias;
import org.springframework.data.redis.core.RedisHash;
import org.springframework.data.redis.core.index.Indexed;

@RedisHash(value = "sample")
@TypeAlias("SampleType")
public class Sample {
    @Indexed
    int id;

    String name;
    ...
}

package com.example.service2;

import org.springframework.data.annotation.TypeAlias;
import org.springframework.data.redis.core.RedisHash;
import org.springframework.data.redis.core.index.Indexed;

@RedisHash(value = "sample")
@TypeAlias("SampleType")
public class Sample {
    @Indexed
    int id;

    String name;
    ...
}

Now the redis object will be deserialized independently of the classes package name.

Link to the relevant documentation for more info