How We Cut 860,000 Table Migration Time from 19 Hours to Under 10

This article details the DRS team's step‑by‑step investigation and optimization of a massive MySQL migration involving 860,000 tables, addressing timeout, OOM, and performance bottlenecks to reduce total migration time from over 19 hours to under 10 hours.

DRSLarge Scale TablesOutOfMemory

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How We Cut 860,000 Table Migration Time from 19 Hours to Under 10