private static final long serialVersionUID = 1L;

    /** Error code for rate limit (HTTP 429). */
    public static final String ERROR_RATE_LIMIT = "rate_limit";

    /** Error code for authentication failure (HTTP 401/403). */
    public static final String ERROR_AUTH = "auth_error";

    /** Error code for service unavailable (HTTP 502/503). */

- advanced user guide: просунутий посібник користувача
- deep learning: глибоке навчання
- machine learning: машинне навчання
- dependency injection: впровадження залежностей
- digest (HTTP): дайджест
- basic authentication (HTTP): базова автентифікація
- JSON schema: Схема JSON
- password flow: потік паролю
- mobile: мобільний
- body: тіло
- form: форма
- path: шлях
- query: запит
- cookie: кукі
- header: заголовок

```
export MINIO_ETCD_ENDPOINTS=http://localhost:2379
minio server /data
```

NOTE: If `etcd` is configured with `Client-to-server authentication with HTTPS client certificates` then you need to use additional envs such as `MINIO_ETCD_CLIENT_CERT` pointing to path to `etcd-client.crt` and `MINIO_ETCD_CLIENT_CERT_KEY` path to `etcd-client.key` .

### 4. Test with MinIO STS API

This is very useful when you need to:

* Have shared logic (the same code logic again and again).
* Share database connections.
* Enforce security, authentication, role requirements, etc.
* And many other things...

All these, while minimizing code repetition.

## First Steps { #first-steps }

    // retry, we return true and try a new route.
    return true
  }

  /**
   * Figures out the HTTP request to make in response to receiving [userResponse]. This will
   * either add authentication headers, follow redirects or handle a client request timeout. If a
   * follow-up is either unnecessary or not applicable, this returns null.
   */
  @Throws(IOException::class)
  private fun followUpRequest(

 * is used to verify the signature of the "www.squareup.com" certificate.
 *
 * This roles are reversed for client authentication. In that case the client has a private key and
 * a chain of certificates. The server uses a set of trusted root certificates to authenticate the
 * client. Subject alternative names are not used for client authentication.
 */
@Suppress("DEPRECATION")
class HeldCertificate(
  @get:JvmName("keyPair") val keyPair: KeyPair,

import org.apache.maven.artifact.Artifact;
import org.apache.maven.artifact.repository.ArtifactRepository;
import org.apache.maven.artifact.repository.ArtifactRepositoryPolicy;
import org.apache.maven.artifact.repository.Authentication;
import org.apache.maven.artifact.repository.metadata.RepositoryMetadata;
import org.apache.maven.repository.Proxy;
import org.codehaus.plexus.logging.AbstractLogEnabled;
import org.codehaus.plexus.logging.Logger;

      }
    }
    return new MacHasher(getMac(prototype.getAlgorithm(), key));
  }

  @Override
  public String toString() {
    return toString;
  }

  /** Hasher that updates a {@link Mac} (message authentication code). */
  private static final class MacHasher extends AbstractByteHasher {
    private final Mac mac;
    private boolean done;

    private MacHasher(Mac mac) {
      this.mac = mac;
    }

    }

    public String getOriginalPassword() {
        return originalPassword;
    }

    /**
     * Clears the original password from memory.
     * Should be called after the password has been used for authentication or provisioning.
     */
    public void clearOriginalPassword() {
        this.originalPassword = null;
    }

    @Override
    public String[] getPermissions() {

* The logic depends on external resources or could block in any other way
* Other dependencies need their results (it's a sub-dependency)
* The logic can be shared by multiple endpoints to do things like error early, authentication, etc.
* They need to handle cleanup (e.g., DB sessions, file handles), using dependencies with `yield`
* Their logic needs input data from the request, like headers, query parameters, etc.