How to introduce and use the CACHE2K core implementation framework in the Java class library

Cache2k is a lightweight cache library based on Java, which provides a flexible and efficient cache solution.This article will introduce the core implementation framework and usage method of Cache2K, and provide relevant Java code examples. 1. Introduction to the Cache2K framework Cache2k is a memory cache library with high performance and low -delayed characteristics.It focuses on solving the problem of cache and provides a series of configurable functions and options to meet the needs of different scenes.Cache2K supports a variety of cache functions, such as cache expires, cache partitions, asynchronous loading, cache refresh, etc. 2. Cache2k's core implementation framework Cache2k's core implementation framework can be divided into the following points: 1. Cache interface (Cache interface): Cache2k provides a Cache interface to define basic operations of cache, such as obtaining slowdown values, storage slows values and removing cache values. Cache<String, String> cache = Cache2kBuilder.of(String.class, String.class) .expireAfterWrite(5, TimeUnit.MINUTES) .build(); cache.put("key", "value"); String value = cache.get("key"); 2. CacheConfigurator: Cache2k provides a Cacheconfigurator interface to configure and customize the cache.Through cacheconfigurator, you can set the expiration time, maximum cache capacity, cache loader, etc. Cache<String, String> cache = Cache2kBuilder.of(String.class, String.class) .expireAfterWrite(5, TimeUnit.MINUTES) .refreshAhead(true) .loader (this :: Loadfromdatabase) // cache loader .build(); 3. Cachelistener: Cache2K supports adding cache monitors to monitor changes in cache, such as updated, removing, and expiry of the cache data. CacheListener<String, String> listener = new CacheListener<String, String>() { @Override public void onEntryUpdated(Cache<String, String> cache, String key, String oldValue, String newValue) { // The operation of the cache update } @Override public void onEntryRemoved(Cache<String, String> cache, String key, String oldValue, RemovalCause cause) { // The operation of the cache is removed } }; Cache<String, String> cache = Cache2kBuilder.of(String.class, String.class) .expireAfterWrite(5, TimeUnit.MINUTES) .addlistener (Listener) // Add cache monitoring device .build(); Third, how to use cache2k Use cache2k to easily create and operate cache. 1. Add cache2k dependencies: Add the following dependencies in the pom.xml file of the Maven project. <dependency> <groupId>org.cache2k</groupId> <artifactId>cache2k-api</artifactId> <version>2.1.1.Final</version> </dependency> 2. Create cache: You can create a cache instance through cache2kbuilder. Cache<String, String> cache = Cache2kBuilder.of(String.class, String.class) .expireAfterWrite(5, TimeUnit.MINUTES) .build(); 3. Storage and acquisition of slowdown value: Use the PUT method to store the slowdown value, and use the GET method to obtain the slowdown value. cache.put("key", "value"); String value = cache.get("key"); 4. Remove the cache value: Use the Remove method to remove the cache value. cache.remove("key"); 5. Clear cache: Use the Clear method to empty the entire cache. cache.clear(); Fourth, summary This article introduces the core implementation framework and usage method of cache2k.By using Cache2K, developers can easily achieve high -performance cache solutions and make custom configuration and monitoring according to actual needs.Cache2k is a powerful and easy -to -use cache library that can meet development needs in most scenarios.