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Facebook were using the filesystem for storing photo's and then moved to Haystack which is essentially an append-only log similar to BitCask. The problem with u
by jorangreef 15y ago
Facebook were using the filesystem for storing photo's and then moved to Haystack which is essentially an append-only log similar to BitCask. The problem with using the filesystem as a KV store is that for every item stored, you're storing a whole lot of filesystem specific meta-data: created, updated, permissions etc.