Package org.alfresco.repo.cache

Class InMemoryCacheStatistics

  • All Implemented Interfaces:
    CacheStatistics, org.springframework.beans.factory.Aware, org.springframework.context.ApplicationContextAware
    public class InMemoryCacheStatistics
extends java.lang.Object
implements CacheStatistics, org.springframework.context.ApplicationContextAware
    Simple non-persistent implementation of CacheStatistics. Statistics are empty at repository startup.
    Since:
    5.0
    Author:
    Matt Ward

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void add​(java.lang.String cacheName, TransactionStats txStats)
      Add new details to the system wide cache statistics.
      java.util.Map<TransactionStats.OpType,​OperationStats> allStats​(java.lang.String cacheName)
      Retrieve a map containing a snapshot of all of the raw stats (e.g.
      long count​(java.lang.String cacheName, TransactionStats.OpType opType)
      Get the number of occurrences of the given operation type, retrieve the number of cache hits that have happened to the cache.
      double hitMissRatio​(java.lang.String cacheName)
      The hit ratio for the given cache, where 1.0 is the maximum possible value and 0.0 represents a cache that has never successfully returned a previously cached value.
      double meanTime​(java.lang.String cacheName, TransactionStats.OpType opType)
      The mean time in nanoseconds for all operations of the given type.
      long numGets​(java.lang.String cacheName)
      Retrieve the total number of get operations invoked on the cache (i.e.
      void setApplicationContext​(org.springframework.context.ApplicationContext applicationContext)  

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • InMemoryCacheStatistics

        public InMemoryCacheStatistics()

    • Method Detail

      • count

        public long count​(java.lang.String cacheName,
                  TransactionStats.OpType opType)
        Description copied from interface: CacheStatistics
        Get the number of occurrences of the given operation type, retrieve the number of cache hits that have happened to the cache.
        Specified by:
        count in interface CacheStatistics
        Parameters:
        cacheName - Name of the cache.
        opType - Type of cache operation.
        Returns:
        long count

      • meanTime

        public double meanTime​(java.lang.String cacheName,
                       TransactionStats.OpType opType)
        Description copied from interface: CacheStatistics
        The mean time in nanoseconds for all operations of the given type.
        Specified by:
        meanTime in interface CacheStatistics
        Parameters:
        cacheName - The cache name.
        opType - Type of operation, e.g. cache hits.
        Returns:
        Time in nanos (double) or NaN if not available yet.

      • hitMissRatio

        public double hitMissRatio​(java.lang.String cacheName)
        Description copied from interface: CacheStatistics
        The hit ratio for the given cache, where 1.0 is the maximum possible value and 0.0 represents a cache that has never successfully returned a previously cached value.
        Specified by:
        hitMissRatio in interface CacheStatistics
        Parameters:
        cacheName - The cache name.
        Returns:
        ratio (double)

      • numGets

        public long numGets​(java.lang.String cacheName)
        Description copied from interface: CacheStatistics
        Retrieve the total number of get operations invoked on the cache (i.e. sum of hits and misses).
        Specified by:
        numGets in interface CacheStatistics
        Parameters:
        cacheName - The cache name.
        Returns:
        Count of get operations.

      • setApplicationContext

        public void setApplicationContext​(org.springframework.context.ApplicationContext applicationContext)
                           throws org.springframework.beans.BeansException
        Specified by:
        setApplicationContext in interface org.springframework.context.ApplicationContextAware
        Throws:
        org.springframework.beans.BeansException