For data to be sent over a network between cluster members and/or clients, it needs to be serialized into raw bytes. Hazelcast has many serialization options to choose from, depending on what you plan on doing with your data.
With the Hazelcast Platform Operator you can configure Hazelcast Serialization using the Hazelcast CR. To understand the Hazelcast Serialization, refer to Platform documentation.
You can find more detailed information on configuration of Serialization in API Reference page.
Configuring Custom Serialization
To register custom serializers, you need to define the list of serializers and types in the serializers section. The following configuration will register two custom serializers.
apiVersion: hazelcast.com/v1alpha1
kind: Hazelcast
metadata:
name: hazelcast
spec:
serialization:
serializers:
- className: com.example.FooSerializer
typeClass: com.example.Foo
- className: com.example.BarSerializer
typeClass: com.example.BarConfiguring Compact Serialization
To configure Compact serialization, you need to define the compactSerialization section. The following configuration will register an explicit serializer com.example.FooSerializer along with a zero-config serializer for com.example.Bar class.
apiVersion: hazelcast.com/v1alpha1
kind: Hazelcast
metadata:
name: hazelcast
spec:
serialization:
compactSerialization:
serializers:
- com.example.FooSerializer
classes:
- com.example.BarDisallowing Deserialization of Untrusted Java Classes
To stop Hazelcast from deserializing arbitrary classes, you can allow or disallow deserialization of Java classes by class name or package name, using the javaSerializationFilter option.
apiVersion: hazelcast.com/v1alpha1
kind: Hazelcast
metadata:
name: hazelcast
spec:
serialization:
javaSerializationFilter:
whitelist:
classes:
- example.Foo
packages:
- com.acme.app
prefixes:
- com.hazelcast.
- java.
- javax.
- \[
blacklist:
classes:
- com.acme.app.BeanComparator