CAP mechanism-based file access method, apparatus and device

Abstract

The invention discloses a CAP mechanism-based file access method. The method comprises the steps of receiving a file access request sent by a client; judging whether an address range of a current operation file is locked or not; if not, allocating an access permission of the file access request to the client, and adding a file lock of the address range, thereby enabling the client to perform fileaccess by utilizing the access permission; and if yes, determining a permission allocation result of the file access request according to type information of the locked address range and type information of current operation. By realizing segmental locks of the file and carrying the range of the operation file in a permission application process, file contents are subjected to segmental control and operation, so that the waiting time of the client or a thread is shortened, file synchronous access is realized, and the read-write performance is improved. The invention furthermore discloses a CAPmechanism-based file access apparatus and device, and a computer readable storage medium, which also can achieve the abovementioned technical effects.

Description

technical field [0001] The present invention relates to the technical field of file access, and more specifically, to a file access method, device, device and computer-readable storage medium based on a CAP mechanism. Background technique [0002] At present, when users access files, they need to apply for permissions; for example, when users read and write files, after applying for write permissions for writing operations on files, the system assigns a mutually exclusive file lock to the thread or client to ensure that the data Consistency, when the thread or client is writing the file, other threads or clients are prohibited from reading and writing the file, even if the scope of the thread to read and write the file is not within the scope of the current file lock thread or client to read and write When within the range, other threads can only operate the file after the thread currently holding the file lock reads and writes the data and releases the file lock, which redu...

AI Technical Summary

Problems solved by technology

[0002] At present, when users access files, they need to apply for permissions; for example, when users read and write files, after applying for write permissions for writing operations on files, the system assigns a mutually exclusive file lock to the thread or client to ensure that the data Consistency, when the thread or client is writing the file, other threads or clients are prohibited from reading and writing the file, even if the scope of the thread to read and write the file is not within the scope of the current file lock thread or client to read and write When within the range, other threads can only operate the file after the thread currently holding the file lock reads and writes the data and releases the file lock, which reduces the concurrency and performance of file reading and writing. Other threads are in a waiting state, and the thread occupies System resources are not fully utilized, causing a certain waste of system resources

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