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We achieve "high availability" by running two ticket servers.
我们通过运行两套票务服务器实现高可用。
youdao
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You know that the period of availability of your ticket is only a days.
您知道，您的客票有效期只有a天。
youdao
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You know that the period of availability of your ticket is only a days.
您知道，您的客票有效期只有a天。
youdao