Exploration and practice of the technical principles of cache framework in the Java class library

Exploration and practice of the technical principles of cache framework in the Java class library Abstract: In modern software development, the cache system is a key component of improving application performance and response speed.Caffeine cache framework is a popular Java class library that uses a technology called "writing algorithm" to achieve efficient data cache.This article will explore the principle of caffeine cache framework and how to practice the framework in the Java code. 1 Introduction In modern distributed systems, data cache is one of the key technologies to improve application performance and scalability.The purpose of the cache system is to create a storage copy on the frequent access data to avoid repeated access to the underlying data source.Caffeine cache framework is an open source Java library that provides a flexible and powerful cache solution. 2. The working principle of the cache cache framework Caffeine cache framework is based on a cache algorithm called LRU (recently used).This algorithm maintains an orderly data structure, retain the recently visited data in memory, and eliminate the most commonly accessible data from the cache. When a data item is first accessed, the cache cache framework loads the data to the cache and marked it as the recently visited data item.In subsequent interviews, the cache cache framework will directly obtain data items from the cache without access to the underlying data source. The caffeine cache frame also implements the writing algorithm. The algorithm temporarily stores the data modification operation in the cache instead of immediately writing back to the underlying data source.The advantage of this is to reduce the frequent writing operation of the underlying data source, thereby improving the throughput and performance of the system. 3. Java code practice of caffeine caching framework Below is a simple Java code example using the cache cache frame: import com.github.benmanes.caffeine.cache.Cache; import com.github.benmanes.caffeine.cache.Caffeine; public class CoffeeCacheExample { public static void main(String[] args) { // Create a caffeine cache Cache<String, String> cache = Caffeine.newBuilder().maximumSize(100).build(); // Store data to the cache cache.put("key1", "value1"); cache.put("key2", "value2"); // Obtain data from the cache String value1 = cache.get("key1", key -> "default"); String value2 = cache.getIfPresent("key2"); // Output results System.out.println (Value1); // Output: Value1 System.out.println (value2); // Output: Value2 } } In the above example, we used the `Caffeine.newbuilder (). Maximumsize (100) .build ()` method created a caffeine cache that can store up to 100 data items.Then, we store the data into the cache through the `put` method, and use the` Get` and `GetifPreSEnt` methods to obtain the data from the cache. 4 Conclusion The caffine cache framework is a powerful and flexible Java class library that provides efficient data cache solutions.This article introduces the principle of cache cache framework and provides a simple Java code example to demonstrate how to use the framework.By using the caching cache framework reasonably, we can improve the performance and response speed of the application, thereby improving the user experience. references: -Caffine cache library official document: https://github.com/ben-manes/caffeine - "Caffeine: A High Performance Java In-Memory Cache" by Ben Manes：https://www.infoq.com/presentations/caffeine-cache-java/