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Current

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Situation

ATS currently supports SSDs, however it does not take the best advantage
of their special characteristics. In particular, SSDs could be used as
an addition level in the cache (between RAM and traditional platter-based
hard drives (HDDs)), and SSDs could benefit from reducing writes. Currently
we write all misses to disk but we could write only (for example) on
seeing the second miss to a particular URL.

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