Real-time data read-write method, device and system and NFS server

Abstract

The invention provides a real-time data read-write method, device and system and an NFS server. The method includes the steps that when data is written, an NFS server places data needing to be written in a preset caching space, determines the pressure information change trend of a distributed file system, adjusts the capacity of the preset caching space according to the change trend and adjusts the data writing speed of the distributed file system; when the data is read, the NFS server judges whether data needing to be read exists in the preset caching space or not, if yes, the data, needing to be read, in the preset caching space is returned to an NFS client side, if not, the pressure information change trend of the distributed file system is determined, the capacity of the preset caching space is adjusted according to the change trend, and the speed of reading the data to the distributed file system is adjusted. While interface compatibility and stability of the distributed file system are ensured, the NFS server adjusts a caching mechanism and data refreshing speed in real time, and therefore the distributed file system is adaptive to all different application scenes.

Description

technical field [0001] The invention relates to the technical field of distributed file systems, in particular to a method, device, system and NFS server for real-time data reading and writing. Background technique [0002] With the advent of the Internet era, websites for ordinary Internet users such as Weibo, WeChat, and online shopping are booming, and giant companies in the Internet industry provide various Internet-based services to hundreds of millions of users. Internet users all over the world publish information online every day, and the amount of data they generate is several times that of a personal computer. [0003] Internet companies usually use high-performance servers to store these data. However, ordinary storage systems cannot support more and more user data, and power outages, disasters and system failures make it difficult to guarantee data security. In order to cope with the surge of user requests at any time, more and more companies adopt distributed ...

AI Technical Summary

Problems solved by technology

[0005] In view of this, the embodiment of the present invention provides a real-time data reading and writing method, device, system and NFS server to solve the problem that the interface of the distributed storage system in the prior art is a general interface, which only provides basic reading and writing functions. When writing data, the client will directly call the interface of the distributed storage system as the user-mode file system, and use the client software to directly mount the distributed storage system to the local file system. In order to ensure the compatibility and stability of the interface, It will cause the interface to be unable to match the block size and cache of the backend, and cannot be adjusted at any time according to the application scenario, and cannot adapt to different application scenarios

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