37results about How to "Reduce reading and writing pressure" patented technology

A data writing method and device, comprising: determining the number of first sub data chunk sets in the data chunks, all data stored in each sub data chunk in the first sub data chunk sets being corrupted data; when the number of first sub data chunk sets exceeds a threshold, determining second sub data chunk sets, a second sub data chunk set being a set of continuous sub data chunks with all data stored in the first and last sub data chunks being corrupted data; when the number of second sub data chunk sets does not exceed the threshold, generating a first data writing request respectively for each second sub data chunk set in the data chunks, and sending the first data writing request to storage; and when the number of second sub data chunk sets exceeds a threshold, generating a second data writing request for data chunks and sending the second data writing request to storage. The data writing method and device do not allow data to be read from a disk to a cache when writing the data, thus reducing the read and write pressure on the RAID.

The invention discloses a method and a device for asynchronously updating data based on a message queue, comprising: a modeling service module determines initial data to be updated according to a data update instruction; the message service module writes target data determined by the initial data into a first message queue; The cache service module reads the target data from the first message queue and loads it into the memory, and the data loaded into the memory is used for publishing; the write library service module writes the target data read from the first message queue into the database. It can be seen that the present invention can receive data through a message queue and store it locally in a persistent manner, avoiding the process of writing data to the database first, and also pushing the data to the cache service and publishing it by the cache service, reducing the process of directly reading data from the database. Finally, the write library service asynchronously writes the data to the database, reducing the amount of data written to the database, reducing the pressure on reading and writing the database, reducing the stall phenomenon during data update, and improving the efficiency of data update.

The embodiment of the invention discloses a snapshot backup method of data. The method comprises the following steps that: determining the category of respective basic data in the data of a plurality of virtual machines in a cloud platform; uniformly carrying out one-time snapshot backup on the basic data in the data of the virtual machine corresponding to same category of the basic data, and independently carrying out snapshot backup on respective discrepant data in the data of the virtual machine corresponding to the same basic data. The embodiment of the invention simultaneously discloses a snapshot backup device of the data.