If backupCount is nonzero, at most backupCount files will be kept, and if more would be created when rollover occurs, the oldest one is deleted. The deletion logic uses the interval to determine which files to delete, so changing the interval may leave old files lying around.
将“backupCount”设置为非零。要理解它,请阅读the docs:
我希望它能帮助你。在
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