KeyCache.java

/*
 * Copyright 2015 Edward Capriolo
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.teknek.nibiru.engine;

import com.google.common.cache.Cache;
import com.google.common.cache.CacheBuilder;

public class KeyCache {
  private Cache<String,Long> lc;
  public KeyCache(int cacheSize){
    lc = CacheBuilder.newBuilder().maximumSize(cacheSize).recordStats().build();
  }
  
  public void put(String key, long value){
    lc.put(key, value);
  }
  
  public long get(String key) {
    long res = -1;
    Long l = lc.getIfPresent(key);
    if (l != null) {
      res = l.longValue();
    }
    return res;
  }
}