*/
public enum DirectoryCacheScope {
    /**
     * Cache only direct children of the directory
     */
    IMMEDIATE_CHILDREN,

    /**
     * Cache entire subtree recursively (if supported by server)
     */
    RECURSIVE_TREE,

    /**
     * Cache only file attributes but not content
     */
    METADATA_ONLY,

    /**
     * Cache complete directory listing including all metadata
     */

  }

  @Test
  fun cache() {
    val cache = Cache(File("/cache/"), Integer.MAX_VALUE.toLong())
    cache.initialize()
    cache.delete()
    cache.evictAll()
    val urls: MutableIterator<String> = cache.urls()
    val writeAbortCount: Int = cache.writeAbortCount()
    val writeSuccessCount: Int = cache.writeSuccessCount()
    val size: Long = cache.size()
    val maxSize: Long = cache.maxSize()

     */
    @Nonnull
    Optional<Boolean> noTransferProgress();

    /**
     * Indicates whether Maven should cache the "not found" status of artifacts that were not found in remote repositories.
     *
     * @return an {@link Optional} containing true if "not found" status should be cached, false if not, or empty if not specified
     */
    @Nonnull
    Optional<Boolean> cacheArtifactNotFound();

    /**

	switch cache.Info.Name {
	case "", dataUsageRoot:
		return cache, errors.New("internal error: root scan attempted")
	}
	basePath := drive.drivePath
	updatePath, closeDisk := globalScannerMetrics.currentPathUpdater(basePath, cache.Info.Name)
	defer closeDisk()

}

// worthKeeping indicates if the cache by itself is worth keeping.
func (m *metacache) worthKeeping() bool {
	if m == nil {
		return false
	}
	cache := m
	switch {
	case !cache.finished() && time.Since(cache.lastUpdate) > metacacheMaxRunningAge:
		// Not finished and update for metacacheMaxRunningAge, discard it.
		return false
	case cache.finished() && time.Since(cache.lastHandout) > 5*metacacheMaxClientWait:

package cmd

import (
	"context"
)

const (
	memTotal     = "total"
	memUsed      = "used"
	memFree      = "free"
	memBuffers   = "buffers"
	memCache     = "cache"
	memUsedPerc  = "used_perc"
	memShared    = "shared"
	memAvailable = "available"
)

var (
	memTotalMD     = NewGaugeMD(memTotal, "Total memory on the node")

import java.io.File;
import java.io.IOException;
import okhttp3.Cache;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;

public final class CacheResponse {
  private final OkHttpClient client;

  public CacheResponse(File cacheDirectory) throws Exception {
    int cacheSize = 10 * 1024 * 1024; // 10 MiB
    Cache cache = new Cache(cacheDirectory, cacheSize);

    client = new OkHttpClient.Builder()

      System.out.println("Usage: Crawler <cache dir> <root>");
      return;
    }

    int threadCount = 20;
    int queueLimit = 1000;
    int hostLimit = 25;
    long cacheByteCount = 1024L * 1024L * 100L;

    Cache cache = new Cache(new File(args[0]), cacheByteCount);
    OkHttpClient client = new OkHttpClient.Builder()
        .cache(cache)
        .callTimeout(5, TimeUnit.SECONDS)

            if (!cache.isEmpty()) {
                return cache.remove(0);
            }
            return new byte[bufferSize];
        }

        @Override
        public synchronized void releaseBuffer(byte[] buf) {
            if (buf != null && cache.size() < maxBuffers) {
                cache.add(buf);
            }
        }
    }

### Download

```kotlin
testImplementation("com.squareup.okhttp3:okhttp-dnsoverhttps:5.1.0")
```

### Usage

```
  val appCache = Cache(File("cacheDir", "okhttpcache"), 10 * 1024 * 1024)
  val bootstrapClient = OkHttpClient.Builder().cache(appCache).build()

  val dns = DnsOverHttps.Builder().client(bootstrapClient)
    .url("https://dns.google/dns-query".toHttpUrl())