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I heard some monero developers talk about sharding to help manage the size of the blockchain. Sharding is where every node only hold a small pieces of the blockchain to help deal with blockchain size growth and they all work together to validate transactions/blocks. How would something like this work in monero? Is it possible to work properly?

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  • Can you make your question more self contained? I.e., what is sharding?
    – Ginger Ale
    Commented Dec 3, 2016 at 16:57
  • Ok i made it clearer
    – samwellj
    Commented Dec 4, 2016 at 2:08

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Currently it's still an open question but I believe it's the inevitable path if Monero adoption increases. The optimal way for a sharded distributed DB to operate is to have encoded rules for mapping from a key to a shard node. E.g., to look up a key image, use the first byte of the key as a map to one of 256 possible branches of shared containing the record. Some distributed systems use a central directory to redirect lookups to their respective nodes - these scale poorly since the central directory becomes a bottleneck itself.

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