When you shard a vector index or route requests across model replicas, naive 'hash mod N' reshuffles everything when N changes. Consistent hashing moves only a small fraction. Here is the implementation.
Updated Aug 2026 · Grounded in real Applied AI Engineer interview loops and written to a senior-engineer editorial bar.
When you shard a vector index or route requests across model replicas, naive 'hash mod N' reshuffles everything when N changes. Consistent hashing moves only a small fraction. Here is the implementation.
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