JD Retail Technology
Sep 20, 2019 · Databases
Follower Reads, Closed Timestamp, and Minimum Proposal Tracker in CB‑SQL
This article explains how CB‑SQL implements follower reads by using safe (closed) timestamps, describes the CT update mechanism with a Minimum Proposal Tracker, and discusses routing, replica read validation, timestamp forwarding, range split/merge handling, and recovery strategies for consistent distributed reads.
CB-SQLCDCClosed Timestamp
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