Class RotatingMap<K,V>


public class RotatingMap<K,V> extends Object
Expires keys that have not been updated in the configured number of seconds. The algorithm used will take between expirationSecs and expirationSecs * (1 + 1 / (numBuckets-1)) to actually expire the message.

get, put, remove, containsKey, and size take O(numBuckets) time to run.

The advantage of this design is that the expiration thread only locks the object for O(1) time, meaning the object is essentially always available for gets/puts.

Note: This class is not thread-safe since it does not protect against changes to buckets while it is being read

  • Constructor Details

  • Method Details

    • rotate

      public Map<K,V> rotate()
    • containsKey

      public boolean containsKey(K key)
    • get

      public V get(K key)
    • put

      public void put(K key, V value)
    • remove

      public V remove(K key)
    • size

      public int size()