如果您需要运行数据报告，那么您很可能会用一个只读复制数据库来减少主生产数据库的负载。
If you need to run reports against your data, then you very likely have a read-only replica database to reduce the load on your master production database.
如果您需要运行数据报告，那么您很可能会用一个只读复制数据库来减少主生产数据库的负载。
If you need to run reports against your data, then you very likely have a read-only replica database to reduce the load on your master production database.
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