Data synchronization method and device

Abstract

The invention provides a data synchronization method and device, and the method comprises the steps: deploying a request route of multiple service instances in an application server, and receiving a data request (a data reading request or a data updating request) sent by a user; if the request is a data reading request, generating a first queue (a queue from a task for refreshing a cache to a task for refreshing the cache); acquiring corresponding data from the cache according to a first preset rule, acquiring corresponding data from the database when the data in the cache is expired or cleared, and asynchronously storing the corresponding data in the cache; if the request is a data updating request, generating a second queue (routing the request for updating the database to a queue for updating the database); and performing data synchronization on the data in the cache and the database according to a second preset rule. On the premise that new middleware is not introduced, through asynchronous serialization of database and cache updating and reading operation, the problem of poor user experience caused by inconsistency of cache and database data in a high-concurrency scene is solved.

Description

technical field [0001] The present application relates to the technical field of Internet data processing, and in particular, to a data synchronization method and device. Background technique [0002] With the continuous growth of Internet users, the performance bottleneck of relational databases is highlighted. Therefore, caching has become an important middleware to break through this problem. But the cache is mostly based on memory, and memory is expensive. Therefore, it is impossible to store the data of the entire database in the cache. When the database changes and synchronizes to the cache, first modify the database and then update the cache. If the update cache fails , then there will be new data in the database and old data in the cache, which will easily cause inconsistency between the cache and the database data, affect the user experience and even cause property losses to the company. [0003] In order to avoid the inconsistency between the cache and database da...

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Problems solved by technology

[0004] In view of the above-mentioned problems, this application provides a data synchronization method and device, through the asynchronous serialization of database and cache update and read operations, to solve the problem caused by the inconsistency of cache and database data in high concurrency scenarios. The problem of poor experience

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