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Why didn't anybody tell me about Redis Hash Slots?

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Hacker News | Sep 23, 2026 | badrequest

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Nothing is stored: every process that runs the same walk against the same cluster gets the same list. Sorting keys before you fan out Each Redis node executes commands on a single thread, so 20 concurrent requests aimed at the same node are functionally a queue. Collapsing the fan-out reduced the quantity of MGET requests we had to make, but didn’t preclude us from spamming a given node with them. keys per chunk 4 3 commands primary 1primary 2primary 3 0123456 command times · 16 commands 0.

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