Recently, in order to improve the speed of reading and writing files for wechat applets, wechat has launched a new FD file interface to optimize the use experience of applets. As a new type of high-performance file interface added by the wechat team, fd interface supports one-time file opening and multiple read-write operations. Compared with the original interface, it is more efficient to open and close files every time
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At the same time, the FD interface also supports read-only and write to specific contents in files. In large file processing, this function can reduce invalid read-write and reduce file read-write time.
Through the above optimization, the experimental summary of reading and writing the same file for 100 times shows that compared with the original interface, the reading and writing time offd interface on Android end is reduced by 46%, and the reading and writing time on IOS end is reduced by 19%
In general, in the face of the scenario of the expanding local storage capacity of the file system, fd interface can effectively improve efficiency, bring a simpler development process to developers and a smoother user experience