Research and optimization of cache failure strategies in the Circumflex Cache framework

Research and optimization of cache failure strategies in the Circumflex Cache framework Summary: With the continuous development of Internet applications and the continuous growth of data scale, cache play an important role as one of the key technologies that improve performance and reduce loads.Circumflex Cache is a Java -based cache framework that provides a variety of cache failure strategies to meet different application scenarios.This article will focus on researching and optimizing the cache failure strategy in the Circumflex Cache framework to improve the performance and reliability of the cache system. 1 Introduction Ccheca is a technology that stores data that is often used in fast access to storage medium.When the application needs to obtain data, it first tries to obtain data from the cache to avoid accessing slow disks or databases.However, the cache needs to ensure the consistency and timeliness of the data through an effective failure strategy. 2. Circumflex Cache framework Circumflex Cache is a Java -based open source cache framework, which provides rich cache management functions.This framework supports a variety of cache failure strategies, including time -based failure, content failure, and event -based failure.These strategies can be configured and selected according to the needs of the application. 3. Research and optimization of cache failure strategy 3.1 Time -based failure strategy Time -based failure strategy is one of the most common cache failure strategies.By setting an expiration time, the data will be considered to be invalid when the data exceeds the time during the cache.We can reduce the number of cache failures by optimizing the setting of the expiration time and increase the hit rate of cache. The following is a time -based JAVA code based on a time -based failure strategy: import com.circumflex.cache.Cached import java.util.concurrent.TimeUnit public class TimeBasedInvalidationStrategy implements Cached { Private Static Final Int Expiration_time = 600; // Expired time set to 600 seconds public String getData(String key) { String data = cache.get (key); // Get data from the cache if (data == null) { data = fetchdataFromdatabase (key); // Get data from the database cache.set (key, data, expiration_time, timeunit.seconds); // Stock the data into the cache, set the expiration time time } return data; } private String fetchDataFromDatabase(String key) { // Get the logic of data from the database } } 3.2 Content -based failure strategy Content -based failure strategy is to determine whether it is invalid based on the content of the data in the cache.When the data changes, the cache will be marked as an invalid to ensure that the latest data can be obtained at the next visit.In the Circumflex Cache framework, you can use the version number or hash value to achieve content -based failure strategies. Here are the Java code of the content -based failure strategy of content: import com.circumflex.cache.Cached import java.util.concurrent.TimeUnit public class ContentBasedInvalidationStrategy implements Cached { private static final int CACHE_VERSION = 1; public String getData(String key) { String data = cache.get (key); // Get data from the cache if (data == null || cache.getVersion(key) < CACHE_VERSION) { data = fetchdataFromdatabase (key); // Get data from the database cache.set (key, data, cache_version); // Stock the data into the cache, and set the version number } return data; } private String fetchDataFromDatabase(String key) { // Get the logic of data from the database } } 4. Summary This article focuses on studying and optimizing the cache failure strategy in the Circumflex Cache framework.Through reasonable setting of parameters such as expiration time and version number, the hit rate and consistency of the cache can be improved.We encourage developers to choose a suitable cache failure strategy based on specific application scenarios, and to adjust according to the actual situation to improve system performance and reliability. references: 1. Circumflex Cache official document: https://circumflex.ru/ 2. Java cache mechanism Introduction: https://www.baeldung.com/java-caching-nTroduction