| 摘要 |
A first version of object data for an object instance can be stored in an object persistence store, which can be a distributed store. After the first version of the object data is stored, a second version of the object data can be stored in the store, without deleting the first version of the object data. Object data versioning information that identifies the first version of the object data and the second version of the object data can be stored separately from method versioning information for the object instance. After the second version of the object data is stored, a request to retrieve the first version of the object instance can be received, and in response, the first version of the object data can be retrieved from the store. Multiple versions of the object instance data can also be searched.
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