Replay Overview

A workload replay task simulates the service load of the source database on the destination database so you can evaluate the effectiveness and performance of the destination database.

A task consists of SQL recording and replay. All of the SQL statements (create, delete, update, and query operations) executed in the required period on the source database will be downloaded by a recording tool from the binlog, and then cached and injected into the destination database where you can trigger a replay and review performance.

Typical Scenarios

• By creating a workload replay task, you can evaluate how the service load of the source database runs on the destination database.
• By specifying the replay thread and speed, you can simulate the peak service load of the source database and analyze the stability of the destination database when workloads increase sharply.

Figure 1 Workload replay