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Correlation Id

The purpose of correlation id to match the request and its corresponding response. The request format will contain the 4-bytes(int32) for correlation Id. It will be marked as correlationId in request format. 

Object Type

We 

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We will support all the object types which Geode understands. This would include all the java primitive types, an array of primitive types, collections, java serialization, data serializable, pdx serialization and custom user data serializers. For the purpose of the request format, we would distinguish key type and value type.

ObjectKeyType

Geode supports only few object types as the region Key. In the request format key will be marked as KeyObject.

ObjectValueType

All the supported Geode types can be defined as the region value. In the request format value will be marked as ValueObject. Value object will be preceded by ValueHeader. This will represent the size of the serialized bytes of ValueObject. It will consume 5-byte in request format. And it will be marked as ValueHeader in the request format.

ResponseType

ReponseType will indicate that whether the response is partial or complete. In the case of the partial response, a client would see the stream of response which it can process as it receives. The response format will contain the 2-bytes(int16) for response type. It will be marked as FullResponse or PartialResponse in request format.

Error Codes

Error codes indicate the issue with the invocation of API at the server. We have following error code for various issues at the server. The response format will contain the 2-bytes(int16) for error codes. It will be marked as ErrorCode in the response format.

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