实时双机系统中检查点设置周期的选择_医网打尽文献搜索 关键词：实时；双机；容错；检查点；卷回恢复 [gap=948]Keywords：real-time;dual-computer;fault tolerance;checkpoint;rollback and recovery
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This supports simple rollback and recovery, but can impact performance if the application being invoked can't respond quickly.
这支持简单的回滚和恢复，但是如果所调用的应用程序无法快速响应，则会影响性能。
Keeping a migration plan, documenting changes to stable states, having a backup solution, and having rollback and recovery instructions will help minimize your downtime and maximize your results.
最佳策略是制定一份详细的迁移计划，记录对稳定状态的更改，选择一种备份解决方案并了解回滚和恢复说明，这一切将有助于最小化停机时间，从而最大化您的工作成果。
The transaction log is stored as a sequential disk file (or sometimes in a raw partition) and will generally only be written to, not read from, except in the case of rollback or recovery.
事务日志存储为连续的磁盘文件(有时存储在原始分区中)，并且一般只是用于写入而不用于读取，回滚或恢复的情况例外。
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