If not, create a new item.

如果不可用，创建一个新项。

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This is because item Connector determines whether or not a Jazz item was modified by comparing its new state with its past states.

这是因为Item Connector通过将Jazz项目的新状态与过去的状态相比较，来决定Jazz项目是否被改动过。

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The results show that when the site is not under load, adding a single new item does not have a significant impact on performance.

结果显示，当站点使用非加载方式，添加一个简单的项目并不会会有明显的性能影响。

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