Let the data written to the database be automatically written to the cache_weixin_34390996’s blog

In project development, in order to reduce the I/O pressure of the database and speed up the response speed of requests, caching is a commonly used technology. Redis and Memcache are two commonly used to do Data caching technology. Some common methods of data caching are to let the data be automatically synchronized to the cache through some automated scripts after being written to the database, or to manually write data to the cache once after writing data to the database. These practices are unavoidably cumbersome, and the code is not easy to maintain. When I was writing a Node.js project, I found that using Mongoose (a MongoDB ODM) and Sequelize (a MySQL ORM) has some features that can elegantly allow data written to MongoDB/MySQL to be automatically written to Redis, and when doing query operations, it can automatically look up data from the cache first. If it cannot be found in the cache, it will enter the DB to search, and write the data found in the DB to the cache. This article does not explain the basic usage of Mongoose and Sequelize, here only explains how to achieve the automatic caching mentioned above. Some libraries used in this…