key = virtualHostHelper.getVirtualHostKey();
        assertEquals("", key); // Still empty due to caching

        // Test caching by calling again - should return cached value
        key = virtualHostHelper.getVirtualHostKey();
        assertEquals("", key); // Still cached value
    }

    @Test
    public void test_getVirtualHostKey_withCaching() {
        ComponentUtil.setFessConfig(new FessConfig.SimpleImpl() {

func (f *Filter) TestTags(userTags string) bool {
	if f.cachedTags == nil {
		cached := make(map[string]string)
		for _, t := range append(f.And.Tags, f.Tag) {
			if !t.IsEmpty() {
				cached[t.Key] = t.Value
			}
		}
		f.cachedTags = cached
	}

	// This filter does not have any tags, always return true
	if len(f.cachedTags) == 0 {
		return true
	}

     * is returned unchanged. The processor is cached for performance.</p>
     *
     * @param <T> the type of the model object
     * @param object the model object to process
     * @return the processed object
     */
    static <T> T processObject(T object) {
        class ProcessorHolder {
            /**
             * Cached processor instance for performance.
             */

"""
    fileSystem.createDirectory(cache.directoryPath)
    writeFile(cache.directoryPath, "$urlKey.0", entryMetadata)
    writeFile(cache.directoryPath, "$urlKey.1", entryBody)
    writeFile(cache.directoryPath, "journal", journalBody)
    cache = Cache(fileSystem, cache.directoryPath, Int.MAX_VALUE.toLong())
    client =
      client
        .newBuilder()
        .cache(cache)
        .build()

     */
    public static final int DIRECTORY_FULL = Smb2LeaseState.SMB2_LEASE_FULL;

    /**
     * Check if directory can cache enumeration results
     * @param state lease state
     * @return true if directory enumeration can be cached
     */
    public static boolean canCacheEnumeration(int state) {
        return Smb2LeaseState.hasReadCaching(state);
    }

    /**

		case "Deleted":
			z.Deleted, bts, err = msgp.ReadBoolBytes(bts)
			if err != nil {
				err = msgp.WrapError(err, "Deleted")
				return
			}
		case "Cached":
			z.Cached, bts, err = msgp.ReadBoolBytes(bts)
			if err != nil {
				err = msgp.WrapError(err, "Cached")
				return
			}
		case "NoMetadata":
			z.NoMetadata, bts, err = msgp.ReadBoolBytes(bts)
			if err != nil {
				err = msgp.WrapError(err, "NoMetadata")

import okio.Source
import okio.Timeout
import okio.buffer

/** Serves requests from the cache and writes responses to the cache. */
class CacheInterceptor : Interceptor {
  @Throws(IOException::class)
  override fun intercept(chain: Interceptor.Chain): Response {
    val call = chain.call()
    val cache = chain.cache
    val cacheCandidate = cache?.get(chain.request().requestForCache())

    val now = System.currentTimeMillis()

		return selected, true
	}

	// If cached is nil we shall skip the entry.
	if selected.cached == nil {
		return nil, false
	}

	// Merge if we have disagreement.
	// Create a new merged result.
	selected = &metaCacheEntry{
		name:     selected.name,
		reusable: true,
		cached:   &xlMetaV2{metaV: selected.cached.metaV},
	}

        String directoryPath = smbFile.getPath();

        // Check if we can use cached directory listing
        if (dirManager.canCacheDirectoryListing(directoryPath)) {
            List<SmbFile> cachedFiles = dirManager.getCachedDirectoryListing(directoryPath);
            if (cachedFiles != null) {
                log.debug("Using cached directory listing for: {}", directoryPath);

            entry.updateState(newState);

            // Flush any cached data if losing write cache
            if (Smb2LeaseState.hasWriteCaching(oldState) && !Smb2LeaseState.hasWriteCaching(newState)) {
                flushCachedWrites(entry.getPath());
            }

            // Invalidate cached data if losing read cache