其二是在ORM层的Hibernate的基础上也添加了相关的分片技术,并支持虚拟分片(Virtual Shard)来便于开发和管理。同时Google也已经将这两方面的代码提交给相关组织。
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The shard ID will be mapped with respect to the virtual shard ID map configured in the later steps.
碎片ID将相对于后续步骤中配置的虚拟碎片ID映射予以映射。
In case a virtual shard id map is not provided (it is optional), it is defaulted to the physical shard id map.
如果未提供虚拟碎片ID映射(可选),默认为物理碎片id映射。
As can be seen below, we configure virtual shards two and three to map to the same physical shard two currently.
如下所示,我们配置虚拟碎片2和3以将其映射到同一物理碎片2。
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