com.google.common.cache.CacheStats.hitRate java code examples

Common ways to obtain CacheStats

private void myMethod () {
 CacheStats c =LoadingCache cache;cache.stats()
Cache cache;cache.stats()
ForwardingCache forwardingCache;forwardingCache.delegate().stats()
Smart code suggestions by Tabnine
}

@Override
public Number getValue() {
  if (getCache() == null) return Long.valueOf(0);
  return Double.valueOf(getStats().hitRate() * 100);
}

public double hitRate() {
 return (matchesCache.stats().hitRate() + sentenceCache.stats().hitRate()) / 2.0;
}

@Managed
public Double getHitRate()
{
  return loadingCache.stats().hitRate();
}

assertEquals(1, stats.requestCount());
assertEquals(0, stats.hitCount());
assertEquals(0.0, stats.hitRate());
assertEquals(1, stats.missCount());
assertEquals(1.0, stats.missRate());
assertEquals(2, stats.requestCount());
assertEquals(1, stats.hitCount());
assertEquals(1.0 / 2, stats.hitRate());
assertEquals(1, stats.missCount());
assertEquals(1.0 / 2, stats.missRate());
assertEquals(3, stats.requestCount());
assertEquals(1, stats.hitCount());
assertEquals(1.0 / 3, stats.hitRate());
assertEquals(2, stats.missCount());
assertEquals(2.0 / 3, stats.missRate());
assertEquals(4, stats.requestCount());
assertEquals(1, stats.hitCount());
assertEquals(1.0 / 4, stats.hitRate());
assertEquals(3, stats.missCount());
assertEquals(3.0 / 4, stats.missRate());

public void testEmptySimpleStats() {
 StatsCounter counter = new SimpleStatsCounter();
 CacheStats stats = counter.snapshot();
 assertEquals(0, stats.requestCount());
 assertEquals(0, stats.hitCount());
 assertEquals(1.0, stats.hitRate());
 assertEquals(0, stats.missCount());
 assertEquals(0.0, stats.missRate());
 assertEquals(0, stats.loadSuccessCount());
 assertEquals(0, stats.loadExceptionCount());
 assertEquals(0, stats.loadCount());
 assertEquals(0, stats.totalLoadTime());
 assertEquals(0.0, stats.averageLoadPenalty());
 assertEquals(0, stats.evictionCount());
}

public void testEmpty() {
 CacheStats stats = new CacheStats(0, 0, 0, 0, 0, 0);
 assertEquals(0, stats.requestCount());
 assertEquals(0, stats.hitCount());
 assertEquals(1.0, stats.hitRate());
 assertEquals(0, stats.missCount());
 assertEquals(0.0, stats.missRate());
 assertEquals(0, stats.loadSuccessCount());
 assertEquals(0, stats.loadExceptionCount());
 assertEquals(0.0, stats.loadExceptionRate());
 assertEquals(0, stats.loadCount());
 assertEquals(0, stats.totalLoadTime());
 assertEquals(0.0, stats.averageLoadPenalty());
 assertEquals(0, stats.evictionCount());
}

public void testSingle() {
 CacheStats stats = new CacheStats(11, 13, 17, 19, 23, 27);
 assertEquals(24, stats.requestCount());
 assertEquals(11, stats.hitCount());
 assertEquals(11.0 / 24, stats.hitRate());
 assertEquals(13, stats.missCount());
 assertEquals(13.0 / 24, stats.missRate());
 assertEquals(17, stats.loadSuccessCount());
 assertEquals(19, stats.loadExceptionCount());
 assertEquals(19.0 / 36, stats.loadExceptionRate());
 assertEquals(17 + 19, stats.loadCount());
 assertEquals(23, stats.totalLoadTime());
 assertEquals(23.0 / (17 + 19), stats.averageLoadPenalty());
 assertEquals(27, stats.evictionCount());
}

assertEquals(1, stats.requestCount());
assertEquals(0, stats.hitCount());
assertEquals(0.0, stats.hitRate());
assertEquals(1, stats.missCount());
assertEquals(1.0, stats.missRate());
assertEquals(2, stats.requestCount());
assertEquals(1, stats.hitCount());
assertEquals(1.0/2, stats.hitRate());
assertEquals(1, stats.missCount());
assertEquals(1.0/2, stats.missRate());
assertEquals(3, stats.requestCount());
assertEquals(1, stats.hitCount());
assertEquals(1.0/3, stats.hitRate());
assertEquals(2, stats.missCount());
assertEquals(2.0/3, stats.missRate());
assertEquals(4, stats.requestCount());
assertEquals(1, stats.hitCount());
assertEquals(1.0/4, stats.hitRate());
assertEquals(3, stats.missCount());
assertEquals(3.0/4, stats.missRate());

 public void testPlus() {
  CacheStats one = new CacheStats(11, 13, 15, 13, 11, 9);
  CacheStats two = new CacheStats(53, 47, 41, 39, 37, 35);

  CacheStats sum = two.plus(one);
  assertEquals(124, sum.requestCount());
  assertEquals(64, sum.hitCount());
  assertEquals(64.0 / 124, sum.hitRate());
  assertEquals(60, sum.missCount());
  assertEquals(60.0 / 124, sum.missRate());
  assertEquals(56, sum.loadSuccessCount());
  assertEquals(52, sum.loadExceptionCount());
  assertEquals(52.0 / 108, sum.loadExceptionRate());
  assertEquals(56 + 52, sum.loadCount());
  assertEquals(48, sum.totalLoadTime());
  assertEquals(48.0 / (56 + 52), sum.averageLoadPenalty());
  assertEquals(44, sum.evictionCount());

  assertEquals(sum, one.plus(two));
 }
}

public void testMinus() {
 CacheStats one = new CacheStats(11, 13, 17, 19, 23, 27);
 CacheStats two = new CacheStats(53, 47, 43, 41, 37, 31);
 CacheStats diff = two.minus(one);
 assertEquals(76, diff.requestCount());
 assertEquals(42, diff.hitCount());
 assertEquals(42.0 / 76, diff.hitRate());
 assertEquals(34, diff.missCount());
 assertEquals(34.0 / 76, diff.missRate());
 assertEquals(26, diff.loadSuccessCount());
 assertEquals(22, diff.loadExceptionCount());
 assertEquals(22.0 / 48, diff.loadExceptionRate());
 assertEquals(26 + 22, diff.loadCount());
 assertEquals(14, diff.totalLoadTime());
 assertEquals(14.0 / (26 + 22), diff.averageLoadPenalty());
 assertEquals(4, diff.evictionCount());
 assertEquals(new CacheStats(0, 0, 0, 0, 0, 0), one.minus(two));
}

assertEquals(requestCount, stats.requestCount());
assertEquals(11, stats.hitCount());
assertEquals(11.0 / requestCount, stats.hitRate());
int missCount = 23;
assertEquals(missCount, stats.missCount());

cacheStatistics.put("evictionCount", cacheStats.evictionCount());
cacheStatistics.put("hitCount", cacheStats.hitCount());
cacheStatistics.put("hitRate", cacheStats.hitRate());
cacheStatistics.put("loadCount", cacheStats.loadCount());
cacheStatistics.put("loadExceptionCount", cacheStats.loadExceptionCount());

LOGGER.info("JTS Geometry cache hit rate: " + stats.hitRate());
LOGGER.info("JTS Geometry total load time: " + stats.totalLoadTime() / 1000);

  @Override
  public Double getValue() {
    return cache.stats().hitRate();
  }
});

  @Override
  public Double getValue() {
    return cache.stats().hitRate();
  }
});

@Managed
public Double getHitRate()
{
  return loadingCache.stats().hitRate();
}

@Managed
public Double getHitRate()
{
  return loadingCache.stats().hitRate();
}

  /**
   * Prints the cache.
   */
  public void printCache() {
    final CacheStats stats = countryCache.stats();
    if (LOG.isInfoEnabled()) {
      LOG.info("Hit count=" + stats.hitCount() + " rate=" + stats.hitRate() + "  Miss count=" + stats.missCount() + " rate=" + stats
        .missRate());
    }
  }
}

  @Override
  public void run() {
    CacheStats cacheStats = cacheResource.getCacheStats().minus(relativeCacheStats);
    String csvStats = String.format("%.3f, %.3f, %d %n", cacheStats.hitRate(), cacheStats.averageLoadPenalty(), cacheStats.evictionCount());
    try {
      com.google.common.io.Files.append(csvStats, cacheLog, Charset.defaultCharset());
    } catch (IOException e) {
    }
  }
}, 0, DEFAULT_LOGGING_DELAY, TimeUnit.SECONDS);

  @Override
  public void run() {
    CacheStats cacheStats = cacheResource.getCacheStats().minus(relativeCacheStats);
    String csvStats = String.format("%.3f, %.3f, %d %n", cacheStats.hitRate(), cacheStats.averageLoadPenalty(), cacheStats.evictionCount());
    try {
      com.google.common.io.Files.append(csvStats, cacheLog, Charset.defaultCharset());
    } catch (IOException e) {
    }
  }
}, 0, DEFAULT_LOGGING_DELAY, TimeUnit.SECONDS);

Javadoc

Returns the ratio of cache requests which were hits. This is defined as hitCount /, or 1.0 when requestCount == 0. Note that hitRate +.

Popular methods of CacheStats

hitCount
Returns the number of times Cache lookup methods have returned a cached value.
evictionCount
Returns the number of times an entry has been evicted. This count does not include manual Cache#inva
missCount
Returns the number of times Cache lookup methods have returned an uncached (newly loaded) value, or
loadExceptionCount
Returns the number of times Cache lookup methods threw an exception while loading a new value. This
totalLoadTime
Returns the total number of nanoseconds the cache has spent loading new values. This can be used to
loadSuccessCount
Returns the number of times Cache lookup methods have successfully loaded a new value. This is alway
requestCount
Returns the number of times Cache lookup methods have returned either a cached or uncached value. Th
loadCount
Returns the total number of times that Cache lookup methods attempted to load new values. This inclu
<init>
Constructs a new CacheStats instance.Five parameters of the same type in a row is a bad thing, but t
missRate
Returns the ratio of cache requests which were misses. This is defined as missCount / requestCount,
averageLoadPenalty
Returns the average time spent loading new values. This is defined as totalLoadTime / (loadSuccessCo
loadExceptionRate
Returns the ratio of cache loading attempts which threw exceptions. This is defined as loadException

Popular in Java

Parsing JSON documents to java classes using gson
onCreateOptionsMenu (Activity)
addToBackStack (FragmentTransaction)
scheduleAtFixedRate (ScheduledExecutorService)
Color (java.awt)
The Color class is used to encapsulate colors in the default sRGB color space or colors in arbitrary
PrintWriter (java.io)
Wraps either an existing OutputStream or an existing Writerand provides convenience methods for prin
Proxy (java.net)
This class represents proxy server settings. A created instance of Proxy stores a type and an addres
JComboBox (javax.swing)
JOptionPane (javax.swing)
DateTimeFormat (org.joda.time.format)
Factory that creates instances of DateTimeFormatter from patterns and styles. Datetime formatting i
Top 17 Free Sublime Text Plugins

How to use hitRatemethodin com.google.common.cache.CacheStats

Best Java code snippets using com.google.common.cache.CacheStats.hitRate (Showing top 20 results out of 333)

How to use
hitRate
method
in
com.google.common.cache.CacheStats