The best practical suggestions for the Cache2K core implementation framework in the Java class library

Cache2k is a fast and flexible Java cache library that provides a simple and powerful way to process cache data.This article will introduce some best practice suggestions for Cache2K to help you better use this library in the project. 1. Use the right key and value type: It is important to choose the appropriate key and value type when using Cache2k.The key should be comparable and should have good hash performance as much as possible.The value should be serialized and suitable for stored in memory.If your value is a large object, you may need to consider serialized and deeper -order performance overhead. The following is an example, showing how to use cache2k to store string values: Cache<String, String> cache = Cache2kBuilder.of(String.class, String.class) .eternal(true) .build(); String key = "myKey"; String value = "myValue"; cache.put(key, value); 2. Define reasonable cache strategies: The cache strategy determines how to expire and delete the entry in the cache.Cache2k provides a variety of cache strategies, such as time -based strategies, access time, etc.It is important to choose a cache strategy that suits your application scenarios. The following is an example that shows how to use cache2k to define a time -based cache strategy: Cache<String, String> cache = Cache2kBuilder.of(String.class, String.class) .expireAfterWrite(10, TimeUnit.MINUTES) .build(); The above code will make it expire after the entry is inserted into the cache. 3. Implement custom loader: Cache2k provides a loader interface for loading the cache bar.Implementing this interface allows you to customize the loading process of cache items as needed. The following is an example, showing how to use the Cacheloader interface to define the loader: Cache<String, String> cache = Cache2kBuilder.of(String.class, String.class) .loader(new CacheLoader<String, String>() { @Override public String load(String key) throws Exception { // Custom loading logic return "Loaded value for key: " + key; } }) .build(); String key = "myKey"; String value = cache.get (key); // This will automatically use a custom loader loading entry 4. Processing cache loss and abnormal: When the cache item is obtained from the cache, the cache is lost or abnormal.Cache2k provides some ways to deal with these situations, such as getRedefault () and getorelse ().Using these methods can prevent application errors caused by cache loss or abnormality. The following is an example, showing how to use the getRedefault () method to handle cache lost: Cache<String, String> cache = Cache2kBuilder.of(String.class, String.class) .build(); String key = "myKey"; String value = cache.getOrDefault(key, "Default value"); The above code will return the cache value associated with the given key. If it is not found, the default value of the specified specified is returned. In summary, these are some of the best practical suggestions using Cache2k.By using these suggestions and proper configurations, you can effectively use cache2k to accelerate your application.