public static <K,V>ConcurrentMap<K,V> newConcurrentMapWithAggressiveConcurrency(){
  return new ConcurrentHashMap<>(16,0.75f,aggressiveConcurrencyLevel);
}

public static < K , V > ConcurrentMap < K , V > newConcurrentMapWithAggressiveConcurrency ( ) { return new ConcurrentHashMap < > ( 16 , 0.75f , aggressiveConcurrencyLevel ) ; }
creates a new chm with an aggressive concurrency level , aimed at high concurrent update rate long living maps .
