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Implement Consistent Hashing

Reference: Consistent Hashing Blog

  • Create a hash space of 10,000 slots.

  • Store StorageNode positions in the hash space in a sorted array.

  • Use SHA-256 to hash each node's name and map it to a position in the hash space.

  • Insert and remove nodes in the sorted array using binary search.

  • To place a key within the nodes:

    • Hash the key using the same SHA-256 function to map it to the hash space.
    • Use binary search to find the rightmost StorageNode responsible for the key's position, then assign the key to that node.

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