```

#### Memory Issues
```java
// Reduce concurrent threads and batch sizes
crawler.crawlerContext.setNumOfThread(5);
crawler.crawlerContext.setMaxAccessCount(1000);
```

#### SSL/TLS Issues
```java
// Configure SSL settings
container.singleton("httpClient", HcHttpClient.class, client -> {
    client.setTrustAllCertificates(true);  // For testing only
});
```

### Debug Logging

import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;

import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLSocketFactory;

import org.bouncycastle.util.encoders.Base64;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import jcifs.CIFSContext;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.Proxy;
import java.util.concurrent.ForkJoinPool;

import javax.net.ssl.SSLSocketFactory;

import org.codelibs.curl.Curl.Method;
import org.junit.Test;

/**
 * Test class for CurlRequest.
 * Tests the fluent API, parameter handling, and request configuration.
 */

        final String value = getSearchEngineHttpSslCertificateAuthorities();
        if (value != null) {
            return value;
        }
        return get("elasticsearch.http.ssl.certificate_authorities");
    }

    String getSearchEngineUsername();

    default String getFesenUsername() {
        final String value = getSearchEngineUsername();
        if (value != null) {

# The URL of the search engine HTTP endpoint.
# For IPv6 environments, use brackets around the IPv6 address (e.g., http://[::1]:9201)
search_engine.http.url=http://localhost:9201
# Path to SSL certificate authorities for secure HTTP connections.
search_engine.http.ssl.certificate_authorities=
# Username for authenticating to the search engine.
search_engine.username=
# Password for authenticating to the search engine.
search_engine.password=

     */
    String getSearchEngineHttpUrl();

    /**
     * Get the value for the key 'search_engine.http.ssl.certificate_authorities'. <br>
     * The value is, e.g.  <br>
     * comment: Path to SSL certificate authorities for secure HTTP connections.
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */

        putEnv(env, Context.SECURITY_CREDENTIALS, credntials);
        if (providerUrl != null && providerUrl.startsWith("ldaps://")) {
            putEnv(env, Context.SECURITY_PROTOCOL, "ssl");
        }
        return env;
    }

    /**
     * Puts a key-value pair to the environment.
     *
     * @param env The environment.
     * @param key The key.
     * @param value The value.

        }
        final String authorities = fessConfig.getFesenHttpSslCertificateAuthorities();
        if (StringUtil.isNotBlank(authorities)) {
            builder.put("http.ssl.certificate_authorities", authorities);
        }
        return new HttpClient(builder.build(), null);
    }

    /**
     * Checks if an index exists in the search engine.
     *