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I am studying about 2Q Cache Replacement Policy and i came across this post.
They have worked out an example with the following page keys [1, 2, 3, 4, 1, 2, 5, 1, 2, 3, 4, 5] and cache memory of 5 pages. A1in size is 2 and A1out size is 3.
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For the 10th page (i.e) 3, even though the page is available in A1out, why is it a cache miss?

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