func (t *tierMetrics) logSuccess(tier string) {
	t.Lock()
	defer t.Unlock()

	stat := t.requestsCount[tier]
	stat.success++
	t.requestsCount[tier] = stat
}

func (t *tierMetrics) logFailure(tier string) {
	t.Lock()
	defer t.Unlock()

	stat := t.requestsCount[tier]
	stat.failure++
	t.requestsCount[tier] = stat
}

var (
	// {minio_node}_{tier}_{ttlb_seconds_distribution}

    println("\n\nRequest to ${server1.socketAddress}")
    executeSynchronously(request)
      .assertSuccessful()
      .assertCode(200)

    println("server1.requestCount ${server1.requestCount}")
    assertThat(server1.requestCount).isEqualTo(1)

    // Close the proxy server
    if (cleanClose) {
      server1.close()
    }

    // Now redirect with DNS to proxyServer2

    }
    CacheStats stats = counter.snapshot();
    int requestCount = 11 + 23;
    assertEquals(requestCount, stats.requestCount());
    assertEquals(11, stats.hitCount());
    assertThat(stats.hitRate()).isEqualTo(11.0 / requestCount);
    int missCount = 23;
    assertEquals(missCount, stats.missCount());
    assertThat(stats.missRate()).isEqualTo(((double) missCount) / requestCount);
    assertEquals(13, stats.loadSuccessCount());

   * missRate =~ 1.0}.
   */
  public double hitRate() {
    long requestCount = requestCount();
    return (requestCount == 0) ? 1.0 : (double) hitCount / requestCount;
  }

  /**
   * Returns the number of times {@link Cache} lookup methods have returned an uncached (newly
   * loaded) value, or null. Multiple concurrent calls to {@link Cache} lookup methods on an absent

import okhttp3.Protocol
import org.junit.rules.ExternalResource

class MockWebServer :
  ExternalResource(),
  Closeable {
  val delegate = mockwebserver3.MockWebServer()

  val requestCount: Int by delegate::requestCount

  var bodyLimit: Long by delegate::bodyLimit

  var serverSocketFactory: ServerSocketFactory? by delegate::serverSocketFactory

  var dispatcher: Dispatcher = QueueDispatcher()
    set(value) {

        corruptMetadata {
          // mess with cipher suite
          it.replace("TLS_", "SLT_")
        }
      }

    assertThat(response.body.string()).isEqualTo("ABC.1") // cached
    assertThat(cache.requestCount()).isEqualTo(2)
    assertThat(cache.networkCount()).isEqualTo(1)
    assertThat(cache.hitCount()).isEqualTo(1)

    assertThat(response.handshake!!.cipherSuite.javaName).startsWith("SLT_")
  }

  @Test

    assertEquals(EMPTY_STATS, cache.stats());

    Object one = new Object();
    cache.getUnchecked(one);
    CacheStats stats = cache.stats();
    assertEquals(1, stats.requestCount());
    assertEquals(0, stats.hitCount());
    assertThat(stats.hitRate()).isEqualTo(0.0);
    assertEquals(1, stats.missCount());
    assertThat(stats.missRate()).isEqualTo(1.0);
    assertEquals(1, stats.loadCount());

    mockWebServer.requireClientAuth()
    val request: RecordedRequest = mockWebServer.takeRequest()
    val nullableRequest: RecordedRequest? = mockWebServer.takeRequest(0L, TimeUnit.SECONDS)
    var requestCount: Int = mockWebServer.requestCount
    mockWebServer.enqueue(MockResponse())
    mockWebServer.start()
    mockWebServer.start(0)
    mockWebServer.start(InetAddress.getLocalHost(), 0)
    mockWebServer.shutdown()

    hitCount++
  }

  @Synchronized fun networkCount(): Int = networkCount

  @Synchronized fun hitCount(): Int = hitCount

  @Synchronized fun requestCount(): Int = requestCount

  private inner class RealCacheRequest(
    private val editor: DiskLruCache.Editor,
  ) : CacheRequest {
    private val cacheOut: Sink = editor.newSink(ENTRY_BODY)
    private val body: Sink

            }

            public synchronized void recordFailure() {
                requestCount++;
                failureCount++;
                lastUpdateTime = System.currentTimeMillis();
            }

            public synchronized void reset(long timestamp) {
                requestCount = 0;
                failureCount = 0;
                totalResponseTime = 0;