Detailed explanation of the working principle of the cache framework in the java class library

The cache cache framework is a commonly used cache solution in the Java class library that can improve the performance and response speed of the system.This article will introduce the working principle of the caffeine cache framework in detail and provide examples of Java code. Introduction to the cache cache framework Caffeine caching framework is a Java -based cache framework developed by Google.It provides an efficient cache implementation that can store data in memory to improve the speed of reading data and reduce the pressure of the database. The main features of caffine cache frames include: 1. Memory storage: The caffeine cache frame uses memory as a cache storage medium, which is extremely fast to write and read data. 2. Automatic loading and refreshing: When there is no value corresponding to a key in the cache, the caffeine cache framework will automatically load the value from the data source and store it in the cache.At the same time, the cache cache framework also supports regular refresh data in the cache to ensure the timeliness of the data. 3. Refresh strategy: The caching cache framework provides a variety of refresh strategies, which can be configured as needed, such as time -based refresh, refresh on request -based. 4. Cache failure: When the data in the cache expires, the cache cache frame is automatically marked as expired and deleted from the cache. 5. Data consistency: When the update operation modifies the data, the caffeine cache framework will synchronize the modification operation into the cache to ensure the consistency of the data. Second, the working principle of caffeine cache framework The working principle of the caffine cache frame can be divided into the following steps: 1. Get the cache object: When using the caching cache frame, you need to get a cache object first.You can create a new cache object through the bucHebuilder class. Example code: Cache<Key, Value> cache = CacheBuilder.newBuilder().build(); 2. Storage data: Use the put () method of the cache object to store data to the cache.When storing data, you can specify the expiration time of the data. Example code: cache.put(key, value); 3. Get data: Use the get () method of the cache object to obtain the data from the cache.If there is a value corresponding to the specified key in the cache, it will be returned directly; otherwise, the data will be loaded from the data source according to the strategy of automatic loading and refreshing, it is stored in the cache, and the value is returned. Example code: Value value = cache.get(key); 4. Delete data: Use the invalidate () method of the cache object to delete the corresponding value of the specified key from the cache. Example code: cache.invalidate(key); 5. Caches recycling: The cache cache framework provides a variety of cache recovery strategies. You can set the cache recovery strategy of the cache object as needed to determine whether the data in the cache needs to recycle the cache. Example code: Cache<Key, Value> cache = CacheBuilder.newBuilder().maximumSize(1000).build(); 3. Summary Caffeine cache framework is an efficient cache solution in the Java class library that can improve the performance and response speed of the system.This article introduces the working principle of caffeine cache framework and provides related Java code examples, hoping to help readers better understand and apply cache cache framework.