Sorry for not misunderstanding. I'm not saying that PHK made a mistake, he picked the simple solution (which is very often the case). But LRU being too simple,

Sorry for not misunderstanding. I'm not saying that PHK made a mistake, he picked the simple solution (which is very often the case). But LRU being too simple, you need to do more to fight again cache pollution. Segmenting your storage is the solution I suggest in the blog post.