Research and Discussion on the technical principles of Circumflex Cache framework in the Java class library

The Circumflex Cache framework is a cache technology widely used in the Java class library. This article will conduct in -depth research and discussion of its technical principles.At the same time, we will provide some Java code examples to help readers better understand the practical application of the framework. 1. Overview of Circumflex Cache framework Circumflex Cache is a full -function cache framework based on memory, which aims to provide high -performance, scalable and highly customized cache solutions.It improves the number of interactions with the back -end data source by accelerating the data of the data through the memory of the data to slow down the data. Second, the core principle of Circumflex Cache 1. Caches data structure: Circumflex Cache uses an efficient data structure to store cache data, usually a hashmap or SKIP list.These data structure allows data to find, insert and delete operations with constant time complexity (O (1)). 2. Data Expiring Strategy: In order to ensure the effectiveness and timely update of the cache data, the Circumflex Cache has achieved a variety of data expiration strategies, such as time -based expiration strategies and capacity -based expiration strategies.In the expiration strategy, the survival time of each cache item can be set. Once the specified time is exceeded, the item will be automatically destroyed.In the capacity expiration strategy, the maximum capacity of the cache can be set. Once the capacity limit is exceeded, some cache items will be eliminated according to a certain algorithm algorithm. 3. Cache data loading mechanism: When there is no target data in the cache, the Circumflex Cache provides the data loading mechanism from the motion of the data loading the data to the cache.By defining a callback function or implementing an interface, developers can customize the logic of data loading and implement data loading and storage in the corresponding callback method.When the application needs to access the data in the cache, the Circumflex Cache will first check whether there is target data in the cache. If it exists, it will be returned directly, otherwise the data loading mechanism will be called to load the data and stores it into the cache. 4. Cache data update mechanism: In order to ensure the consistency of the cache data, Circumflex Cache provides a data update mechanism.When the application modifies or deletes the data in the cache, the Circumflex Cache will automatically update the data in the cache and the data in the underlying data source to maintain the consistency of the data. Third, sample code of the Circumflex Cache framework The following is a simple sample code that demonstrates how to use the Circumflex Cache framework to achieve a memory -based cache. import com.thoughtworks.circumflex.cache.Cache; import com.thoughtworks.circumflex.cache.ConcurrentCache; public class CircumflexCacheExample { public static void main(String[] args) { // Create a cache instance Cache<String, String> cache = new ConcurrentCache<>(); // Store the data into the cache cache.put("key1", "value1"); cache.put("key2", "value2"); // Obtain data from the cache String value1 = cache.get("key1"); System.out.println("value1: " + value1); // Output: value1 // Remove data from the cache cache.remove("key2"); // Check whether there are specified data in the cache cache boolean containsKey = cache.containsKey("key2"); System.out.println("containsKey: " + containsKey); // Output: false } } The above example code demonstrates how to use the Circumflex Cache framework to create a memory -based cache instance, storage data, reading data, and removing data. Summarize: The Circumflex Cache framework is a high -performance, scalable and highly customized memory cache solution.It uses a series of mechanisms and strategies to manage caching data to improve the performance and response capabilities of the application.Through in -depth research and discussing the technical principles of Circumflex Cache, we can better understand its internal working principles and be able to flexibly apply it to actual projects.