/// tip | Совет

Я приведу более конкретные примеры с контейнерами в следующей главе: [FastAPI внутри контейнеров — Docker](docker.md){.internal-link target=_blank}.

///

## Использование ресурсов { #resource-utilization }

Ваш сервер(а) — это **ресурс**, который ваши программы могут потреблять или **использовать**: время вычислений на CPU и доступную оперативную память (RAM).

		switch {
		case c == '"':
			return string(d.scratch.bytes()), nil
		case c == '\\':
			c = d.next()
			goto scan_esc
		case c < 0x20:
			return "", d.mkError(ErrSyntax, "in string literal")
		// Coerce to well-formed UTF-8.
		default:
			d.scratch.add(c)
			if d.remaining() == 0 {
				return "", d.mkError(ErrSyntax, "in string literal")
			}
			c = d.next()
		}
	}

scan_esc:
	switch c {

				host, _, err := net.SplitHostPort(getHost(r))
				if err != nil {
					host = r.Host
				}
				// Make sure to skip matching minio.<domain>` this is
				// specifically meant for operator/k8s deployment
				// The reason we need to skip this is for a special
				// usecase where we need to make sure that
				// minio.<namespace>.svc.<cluster_domain> is ignored
				// by the bucketDNS style to ensure that path style

```

> NOTE: for a reasonable test outcome, make sure the assumed user has at least permission/policy to list all buckets. That policy would look like below:

```
{
  "version": "2012-10-17",
  "statement": [
    {
      "effect": "Allow",
      "action": [
        "s3:ListAllMyBuckets"
      ],
      "resource": [
        "arn:aws:s3:::*"
      ]
    }
  ]
}
```

					return c, config.Errorf("unable to parse a domain from the OpenID config")
				}
			}
			if p.ClientID == "" {
				return c, config.Errorf("client ID must not be empty")
			}

			// We set the resource ID of the role arn as a hash of client
			// ID, so we can get a short roleARN that stays the same on
			// restart.
			var resourceID string
			{
				h := sha1.New()
				h.Write([]byte(p.ClientID))

/// info

If you already went through all the tutorial and came back to see more about types, a good resource is <a href="https://mypy.readthedocs.io/en/latest/cheat_sheet_py3.html" class="external-link" target="_blank">the "cheat sheet" from `mypy`</a>.

///

As SQLModel is based on SQLAlchemy, you can easily use **any database supported** by SQLAlchemy (which makes them also supported by SQLModel), like:

* PostgreSQL
* MySQL
* SQLite

* `fixedquery`: den exakten Text `fixedquery` hat.
* `$`: dort endet, keine weiteren Zeichen nach `fixedquery` hat.

Wenn Sie sich mit all diesen **„regulärer Ausdruck“**-Ideen verloren fühlen, keine Sorge. Sie sind ein schwieriges Thema für viele Menschen. Sie können noch viele Dinge tun, ohne reguläre Ausdrücke direkt zu benötigen.

Aber nun wissen Sie, dass Sie sie in **FastAPI** immer dann verwenden können, wenn Sie sie brauchen.

Keine Sorge, so wie der Code strukturiert ist, werden wir später sicherstellen, dass wir **eine einzige SQLModel-*Session* pro Request** verwenden, das ist eigentlich das, was `check_same_thread` erreichen möchte.

		Claims:          cred.Claims,
	}) {
		retSet = true
	}
	if byPassSet || retSet {
		return ErrNone
	}
	return ErrAccessDenied
}

// isPutActionAllowed - check if PUT operation is allowed on the resource, this
// call verifies bucket policies and IAM policies, supports multi user
// checks etc.