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Jun 21, 2026 · Databases

Why Master‑Slave Replication Lags 5‑7 AM and How a Big‑Data Snapshot Fixes It

The article analyzes why the master‑slave database replication experiences 30‑minute delays each morning between 5 AM and 7 AM, traces the cause to massive inventory‑snapshot jobs, evaluates several mitigation options, and details a big‑data extraction workflow that eliminates the lag while reducing disk usage.