This pattern resembles the fetch and Flag pattern, because it also includes a fetch step.

该模式集中了Fetch与Flag模式，因为它还包含了一个读取步骤。

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If we try to eager fetch the department entity then for every fetch of same department the database is hit for department information even though it is available in our second level cache.

如果对department实体采取预先抓取，那么对于同样的department实例，纵使它位于二级缓存中，每次也都需要查询数据库。

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The ball went out of play and, when a ball boy took his time retrieving it, Hazard went to fetch it himself.

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Rather than memories that have to go to a specific address and step and fetch it, they can address databases in memory through similar content methods.

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It can fetch high prices when sold as scrap which makes it attractive to thieves.

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