JUNE 08, 2022

Cache Made Consistent – Cache invalidation might no longer be a hard thing in Computer Science

Cache invalidation is considered one of the hardest things in Computer Science. We, at Meta, operate some of the world’s largest cache deployments (e.g. Memcache and TAO), serving more than one quadrillion queries a day. We have developed a systemic approach at diagnosing inconsistencies from cache invalidations at scale.

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