maven依赖
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>23.0</version>
</dependency>
import com.google.common.cache.Cache;
import com.google.common.cache.CacheBuilder;
import com.google.common.cache.RemovalListener;
import com.google.common.cache.RemovalNotification;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.List;
import java.util.concurrent.TimeUnit;
public class CacheMap {
private static final Logger log = LoggerFactory.getLogger(CacheMap.class);
/**
* @desction: 使用google guava缓存处理
*/
private static Cache<String,Object> cache;
static {
cache = CacheBuilder.newBuilder().maximumSize(10000)
.expireAfterWrite(24, TimeUnit.HOURS)
.initialCapacity(10)
.removalListener(new RemovalListener<String, Object>() {
@Override
public void onRemoval(RemovalNotification<String, Object> rn) {
if(log.isInfoEnabled()){
log.info("被移除缓存{}:{}",rn.getKey(),rn.getValue());
}
}
}).build();
}
/**
* @desction: 获取缓存
*/
public static Object get(String key){
return StringUtils.isNotEmpty(key)?cache.getIfPresent(key):null;
}
/**
* @desction: 放入缓存
*/
public static void put(String key,Object value){
if(StringUtils.isNotEmpty(key) && value !=null){
cache.put(key,value);
}
}
/**
* @desction: 移除缓存
*/
public static void remove(String key){
if(StringUtils.isNotEmpty(key)){
cache.invalidate(key);
}
}
/**
* @desction: 批量删除缓存
*/
public static void remove(List<String> keys){
if(keys !=null && keys.size() >0){
cache.invalidateAll(keys);
}
}
}