Detailed explanation of technical principles of Circumflex Cache framework in Java Library

Detailed explanation of technical principles of Circumflex Cache framework in Java Library Circumflex Cache is an open source cache framework in Java. It provides an efficient and easy -to -use cache solution to store data in memory to improve access speed.Circumflex Cache framework is based on key -value pair of storage models and can be used to cache various types of data, such as database query results, calculation results, network request results, etc. The core principle of Circumflex Cache is based on the cache of memory. It uses the HashMap data structure to store key values.When you need to cache data, store the data into HashMap and use a unique key to identify the data.When you need to get the cache data, you can quickly find and return the data from the HashMap through the key.This method of memory caching can greatly increase the access speed of data, because memory read speed is far faster than the read speed of disk or network reading. Circumflex Cache also provides some advanced features to optimize the cache performance and availability.One of them is the expiration time mechanism, which can set the expiration time of the cache data.Once the cache data expires, it will automatically remove it from the cache, which can ensure that the obtained data is always the latest.Another feature is the memory recovery mechanism that is used to automatically clean up cache data that is no longer used to avoid memory leakage and occupying too much memory space. The following is a simple Java code example, demonstrating the basic usage of Circumflex Cache: import com.outbrain.cqllib.cache.Cache; import com.outbrain.cqllib.cache.CacheBuilder; public class CircumflexCacheDemo { public static void main(String[] args) { // Create a cache instance Cache<String, String> cache = CacheBuilder.newBuilder() .setmaxsize (1000) // Set the maximum capacity of the cache .SetexpireAFTERACCESS (60 * 1000) // Set the expiration time of the cache data (millisecond) .build(); // Store data to the cache cache.put("key1", "value1"); cache.put("key2", "value2"); // Obtain data from the cache String value1 = cache.get("key1"); String value2 = cache.get("key2"); System.out.println (Value1); // Output: Value1 System.out.println (value2); // Output: Value2 // Remove data from the cache cache.invalidate("key1"); // Check whether the data exists in the cache boolean exists = cache.containsKey("key1"); System.out.println (exists); // Output: false } } In the above examples, we first created a cache instance and set up the cache maximum key value pair through the `setmaxsize` method. The expiration time of the cache data was set to 60 seconds through the` setexpireaFTeraccess` method.Then we stored two key values pairs in the cache and obtained the value corresponding to the two keys from the cache through the `Get` method.Next, we use the `Invalidate` method to remove the corresponding data corresponding to the` key1` from the cache, and use the `Containskey` method to check whether the key is still in the cache. This is just a simple example of the Circumflex Cache framework in practical applications. In fact, it also provides many other functions and configuration options to meet the needs in different scenarios.By using cache technology reasonably, we can achieve significant results in improving system performance and response speed.