The actual application of ConcurrenlinkedhashMap in Java programming
Concurrentlinkedhashmap is a commonly used concurrent security hash table in Java.It provides an efficient concurrent hash mapping table that can be used to store key value pairs and ensure thread safety in a multi -threaded environment.
In actual Java programming, ConcurrentlinkedhashMap can be used for cache data.In web applications, we often need to cache some data to improve data access efficiency.And using ConcurrentlinkedhashMap can ensure that there will be no concurrency problems when accessing the indigenation at the same time.
Below is a simple example code, demonstrating how to use the ConcurrentlinkedhashMap in Java to achieve a simple cache:
import com.googlecode.concurrentlinkedhashmap.ConcurrentLinkedHashMap;
public class SimpleCache {
private ConcurrentLinkedHashMap<Integer, String> cache;
public SimpleCache() {
int MaxSize = 100; // The maximum capacity of the cache
cache = new ConcurrentLinkedHashMap.Builder<Integer, String>()
.maximumWeightedCapacity(maxSize)
.build();
}
public void put(int key, String value) {
cache.put(key, value);
}
public String get(int key) {
return cache.get(key);
}
public void remove(int key) {
cache.remove(key);
}
public void clear() {
cache.clear();
}
}
In the above code, we created a Simplecache class that uses ConcurrentLinkedhashmap to store key values pairs.In the constructor, we can specify the maximum capacity of the cache and other configurations.Then we can use PUT, Get, Remove, Clear and other methods to operate data in the cache.
In addition to caching in web applications, ConcurrentlinkedhashMap can also be used in other scenarios that need to be safely mapped.Because its concurrent performance is good, it can also be used in concurrent operations of large -scale data.
When using ConcurrentlinkedhashMap, you need to pay attention to considerations such as thread security and performance, as well as appropriate configuration parameters.Of course, for more complex application scenarios, you may need to understand its principles and more flexible configurations.
