The technical principle of the Spring Cache component and the application practice in the Java class library

The technical principle of the Spring Cache component and the application practice in the Java class library Spring Cache is a cache component provided in the Spring framework to simplify the data cache operation in the application.It can easily add cache logic to applications based on Java's annotations and AOP (facing -oriented programming) mechanism, thereby improving performance and response speed. The technical principle of Spring Cache is a method -based cache, that is, the method of repeating the same parameters by labeling and cache its results through the marking method and cache its results.When calling the cache method, SPRING CACHE first checks whether there are corresponding results in the cache.If you exist, return the result directly from the cache; if there is no existence, the execution method and store the result into the cache, thereby improving the performance of the method of the same parameter of the subsequent parameters. It is very simple to use Spring Cache.First, cache support is required in the configuration file of the application.It can be implemented by adding @EnableCaching annotations to the @Configuration class.For example: @Configuration @EnableCaching public class AppConfig { // Configure other bean ... } Then you can add @cacheable annotations to the way to use the cache method.@Cacheable annotation can specify the attributes of the cache name, method parameter.For example: @Service public class UserService { @Cacheable(value = "users", key = "#id") public User getUserById(Long id) { // Obtain user information from the database or other data sources ... } } In the above example, a cache called "Users" is used, and the method of method ID is used as the cache key.When the GetUserbyID method is called, the result is directly returned if there is already a corresponding result in the cache "Users"; if there is no result in the cache, check the user information from the database and store it into the cache. In addition to @cacheable annotations, Spring Cache also provides other annotations for different cache operations.For example, the@cachePut annotation is used to update the cache result,@cacheevict annotations are used to delete the result of cache, and so on.These annotations can be selected and used according to actual needs. In summary, Spring Cache is a simple and powerful cache component that can help improve the performance and response speed of the application.By using annotations and AOP mechanisms, cache logic can be easily added to the application.If you want to improve your application performance, you may wish to consider using Spring Cache. It is hoped that this article will help understand the technical principles of the Spring Cache component and the application practice in the Java class library.If you are interested in the specific Java code example, you can continue to study the Spring Cache documentation and related tutorials.