![A clockwise ring marks A20, added D35, B50 and C80. The highlighted interval (20,35] moves from B to D while other ownership remains unchanged.](/visuals/posts-consistent-hashing-shrinks-the-rebalance.svg)
Consistent hashing shrinks the rebalance
Consistent hashing limits placement changes when membership changes; it does not itself move data, make replicas agree, or distribute a hot key’s requests. In the classic clockwise ring, a key belongs to the first node point at or after its hash position, wrapping to the smallest point when necessary. ...