Package org.alfresco.repo.cache

Class InMemoryCacheStatistics

java.lang.Object
org.alfresco.repo.cache.InMemoryCacheStatistics
All Implemented Interfaces:
CacheStatistics, org.springframework.beans.factory.Aware, org.springframework.context.ApplicationContextAware
public class InMemoryCacheStatistics extends 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

  • Constructor Details

    • InMemoryCacheStatistics

      public InMemoryCacheStatistics()

  • Method Details

    • count

      public long count(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(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.

    • add

      public void add(String cacheName, TransactionStats txStats)
      Description copied from interface: CacheStatistics
      Add new details to the system wide cache statistics.
      Specified by:
      add in interface CacheStatistics

    • hitMissRatio

      public double hitMissRatio(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(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.

    • allStats

      public Map<TransactionStats.OpType,OperationStats> allStats(String cacheName)
      Description copied from interface: CacheStatistics
      Retrieve a map containing a snapshot of all of the raw stats (e.g. counts, mean operation times etc.). Since this is a snapshot it is unaffected by future modifications to the statistics - by using CacheStatistics.add(String, TransactionStats) for example.
      Specified by:
      allStats in interface CacheStatistics
      Parameters:
      cacheName - The cache name.
      Returns:
      Map of OpType to OperationStats

    • 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