使用这个函数通常可以减少缓存缺失和停顿，从而提高性能。
Using this function can generally result in better performance by minimizing cache misses and stalls.
而当您加载一个对象(比如缓存缺失之后)然后推测同时还需要哪些其他相关对象并加载它们时，则需要用到预测性加载策略。
Predictive loading is a strategy by which when you load an object (say, upon a cache miss) and then guess which other related objects might also need at the same time and load them as well.
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