TestPerfGuavaCache.java

gistfile1.java

import java.util.concurrent.TimeUnit;

import org.perf4j.StopWatch;

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

public class TestPerfGuavaCache {

 public static final String KEY = "KEY";
 public static final String VALUE = "VALUE";

 public static void main(String[] args) throws Exception {

  StopWatch stopWatch = new StopWatch();

  Cache<String, String> maps = CacheBuilder.newBuilder()//
    // .maximumSize(1000)//
    .expireAfterWrite(10, TimeUnit.MINUTES)//
    .build();
  for (int i = 0; i < 1_000_000; i++) {
   String key = KEY + i;
   String value = VALUE + i;
   System.out.println("get Object in memory :" + maps.getIfPresent(key));

   // set a new object
   maps.put(key, value);
   System.out.println("set Object in memory :");

   System.out.println("Get Object after set :" + maps.getIfPresent(key));
  }

  stopWatch.stop();
  System.out.println("OldFashion Elapsed Time: " + stopWatch.getElapsedTime());
 }
}