When these problems occur, you can either undo the updates, or recover from the changes by restoring a stable state of the environment.
出现这些问题时，您可以撤消更新，也可以通过还原环境的稳定状态来恢复更改之前的状态。
Rolling back enables you to return your environment to a stable state in your migration, minimizing downtime.
回滚允许您将环境还原到迁移中的某个稳定状态，从而可最小化停机时间。
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