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1. 发明授权

US08407419B2 System and method for managing a cache using file system metadata 有权
标题翻译：使用文件系统元数据管理缓存的系统和方法
公开(公告)号：US08407419B2
公开(公告)日：2013-03-26
申请号：US12956921
申请日：2010-11-30
申请人： James C. Shea
发明人： James C. Shea
IPC分类号： G06F12/08
CPC分类号： G06F12/0811 , G06F12/0871 , G06F12/0891 , G06F12/0897 , G06F12/122 , G06F12/126
摘要： Systems and methods for management of a cache are disclosed. In general, embodiments described herein store access counts in file system metadata associated with files in the cache. By encoding access counts in the file system metadata, file I/O operations are reduced. Preferably, the reference count is encoded in an access count timestamp in the file system metadata. The access counts can be decoded based on the difference between the access count time stamp and a base time value, with larger differences reflecting a larger access count. The cache can be aged by advancing the base time value, thereby causing the access count for a file to drop. The base time value can also be stored in file system metadata, thereby reducing file I/O operations when performing aging.
摘要翻译：公开了用于管理缓存的系统和方法。通常，这里描述的实施例存储与高速缓存中的文件相关联的文件系统元数据中的访问计数。通过编码文件系统元数据中的访问计数，减少了文件I / O操作。优选地，参考计数被编码在文件系统元数据中的访问计数时间戳中。可以基于访问计数时间戳和基准时间值之间的差异来解码访问计数，其中较大的差异反映较大的访问次数。缓存可以通过提前基准时间值老化，从而导致文件的访问计数下降。基准时间值也可以存储在文件系统元数据中，从而在执行老化时减少文件I / O操作。

2. 发明申请

US20120137081A1 SYSTEM AND METHOD FOR MANAGING A CACHE USING FILE SYSTEM METADATA 有权
标题翻译：使用文件系统元数据管理缓存的系统和方法
公开(公告)号：US20120137081A1
公开(公告)日：2012-05-31
申请号：US12956921
申请日：2010-11-30
申请人： James C. Shea
发明人： James C. Shea
IPC分类号： G06F12/08
CPC分类号： G06F12/0811 , G06F12/0871 , G06F12/0891 , G06F12/0897 , G06F12/122 , G06F12/126
摘要： Systems and methods for management of a cache are disclosed. In general, embodiments described herein store access counts in file system metadata associated with files in the cache. By encoding access counts in the file system metadata, file I/O operations are reduced. Preferably, the reference count is encoded in an access count timestamp in the file system metadata. The access counts can be decoded based on the difference between the access count time stamp and a base time value, with larger differences reflecting a larger access count. The cache can be aged by advancing the base time value, thereby causing the access count for a file to drop. The base time value can also be stored in file system metadata, thereby reducing file I/O operations when performing aging.
摘要翻译：公开了用于管理缓存的系统和方法。通常，这里描述的实施例存储与高速缓存中的文件相关联的文件系统元数据中的访问计数。通过编码文件系统元数据中的访问计数，减少了文件I / O操作。优选地，参考计数被编码在文件系统元数据中的访问计数时间戳中。可以基于访问计数时间戳和基准时间值之间的差异来解码访问计数，其中较大的差异反映较大的访问次数。缓存可以通过提前基准时间值老化，从而导致文件的访问计数下降。基准时间值也可以存储在文件系统元数据中，从而在执行老化时减少文件I / O操作。

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