Read Ahead and Write Behind
In this section, you'll see how the cache manager implements reading and writing file data on behalf of file system drivers. Keep in mind that the cache manager is involved in file I/O only when a file is opened without the FILE_FLAG_NO_BUFFERING flag and then read from or written to using the Windows I/O functions (for example, using the Windows ReadFile and WriteFile functions). Mapped files don't go through the cache manager, nor do files opened with the FILE_FLAG_NO_BUFFERING flag set.
Intelligent Read-Ahead
The cache manager uses the principle of spatial locality to perform intelligent read-ahead by predicting what data the calling process is likely to read next based on the data that it is reading currently. Because ...
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