Examples with CacheStats com.github.benmanes.caffeine.cache.stats.CacheStats used on opensource projects

Example 6 with CacheStats

use of com.github.benmanes.caffeine.cache.stats.CacheStats in project caffeine by ben-manes.

the class CacheStatsTest method testMinus.

public void testMinus() {
    CacheStats one = new CacheStats(11, 13, 17, 19, 23, 27, 54);
    CacheStats two = new CacheStats(53, 47, 43, 41, 37, 31, 62);
    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.loadFailureCount());
    assertEquals(22.0 / 48, diff.loadFailureRate());
    assertEquals(26 + 22, diff.loadCount());
    assertEquals(14, diff.totalLoadTime());
    assertEquals(14.0 / (26 + 22), diff.averageLoadPenalty());
    assertEquals(4, diff.evictionCount());
    assertEquals(8, diff.evictionWeight());
    assertEquals(new CacheStats(0, 0, 0, 0, 0, 0, 0), one.minus(two));
}

Example 7 with CacheStats

use of com.github.benmanes.caffeine.cache.stats.CacheStats in project druid by druid-io.

the class CaffeineCache method doMonitor.

@Override
public void doMonitor(ServiceEmitter emitter) {
    final CacheStats oldStats = priorStats.get();
    final CacheStats newStats = cache.stats();
    final CacheStats deltaStats = newStats.minus(oldStats);
    final ServiceMetricEvent.Builder builder = ServiceMetricEvent.builder();
    emitter.emit(builder.build("query/cache/caffeine/delta/requests", deltaStats.requestCount()));
    emitter.emit(builder.build("query/cache/caffeine/total/requests", newStats.requestCount()));
    emitter.emit(builder.build("query/cache/caffeine/delta/loadTime", deltaStats.totalLoadTime()));
    emitter.emit(builder.build("query/cache/caffeine/total/loadTime", newStats.totalLoadTime()));
    emitter.emit(builder.build("query/cache/caffeine/delta/evictionBytes", deltaStats.evictionWeight()));
    emitter.emit(builder.build("query/cache/caffeine/total/evictionBytes", newStats.evictionWeight()));
    if (!priorStats.compareAndSet(oldStats, newStats)) {
        // ISE for stack trace
        log.warn(new IllegalStateException("Multiple monitors"), "Multiple monitors on the same cache causing race conditions and unreliable stats reporting");
    }
}

Example 8 with CacheStats

use of com.github.benmanes.caffeine.cache.stats.CacheStats in project spring-boot by spring-projects.

the class CaffeineCacheStatisticsProvider method getCacheStatistics.

@Override
public CacheStatistics getCacheStatistics(CacheManager cacheManager, CaffeineCache cache) {
    DefaultCacheStatistics statistics = new DefaultCacheStatistics();
    statistics.setSize(cache.getNativeCache().estimatedSize());
    CacheStats caffeineStatistics = cache.getNativeCache().stats();
    if (caffeineStatistics.requestCount() > 0) {
        statistics.setHitRatio(caffeineStatistics.hitRate());
        statistics.setMissRatio(caffeineStatistics.missRate());
    }
    return statistics;
}