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现在每次 都会去 磁盘查询文件是否被修改 此处改为被动 既前台发过来一个 请求 先查缓存 (存储文件名和对应的文件信息) 缓存没有 去文件系统查询 同时如果文件系统发生修改 则 修改缓存 问题: 此处如何判断文件不存在 即文件不存在应该怎么处理
The text was updated successfully, but these errors were encountered:
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现在每次 都会去 磁盘查询文件是否被修改 此处改为被动 既前台发过来一个 请求 先查缓存 (存储文件名和对应的文件信息) 缓存没有 去文件系统查询 同时如果文件系统发生修改 则 修改缓存
问题: 此处如何判断文件不存在 即文件不存在应该怎么处理
The text was updated successfully, but these errors were encountered: