Google Guava cache example

google_guava_cache.groovy

import com.google.common.cache.*
import java.util.concurrent.TimeUnit

LoadingCache<String, String> mycache = CacheBuilder.newBuilder()
       .maximumSize(1000)
       .recordStats()
       .expireAfterWrite(5, TimeUnit.SECONDS)
       .build(
           new CacheLoader<String, String>() {
             public String load(String key) throws Exception {
                 return "{'test', 'this string'}"
             }
           });

def test =  "test"
try {
      println mycache.get(test)
      println mycache.stats()
      sleep 2000
      println mycache.get(test)
      println mycache.stats()
      sleep 6000
      println mycache.get(test)
      println mycache.stats()
} catch (Exception e) {
      println "error " + e
}