///

SQLModel은 SQLAlchemy를 기반으로 하므로, SQLAlchemy에서 **지원하는 모든 데이터베이스**를 손쉽게 사용할 수 있습니다(SQLModel에서도 동일하게 지원됩니다). 예를 들면:

* PostgreSQL
* MySQL
* SQLite
* Oracle
* Microsoft SQL Server 등.

이 예제에서는 **SQLite**를 사용합니다. SQLite는 단일 파일을 사용하고 파이썬에서 기본적으로 지원하기 때문입니다. 따라서 이 예제를 그대로 복사하여 실행할 수 있습니다.

나중에 실제 프로덕션 애플리케이션에서는 **PostgreSQL**과 같은 데이터베이스 서버를 사용하는 것이 좋습니다.

/// tip | 팁

///

### <a href="https://github.com/encode/apistar" class="external-link" target="_blank">APIStar</a> (<= 0.5) { #apistar-0-5 }

Justo antes de decidir construir **FastAPI** encontré **APIStar** server. Tenía casi todo lo que estaba buscando y tenía un gran diseño.

	if retries == 5 {
		scannerLogOnceIf(ctx, fmt.Errorf("maximum retry reached to load the data usage cache `%s`", name), "retry-loading-data-usage-cache")
	}

	return nil
}

// Maximum running concurrent saves on server.
var maxConcurrentScannerSaves = make(chan struct{}, 4)

// save the content of the cache to minioMetaBackgroundOpsBucket with the provided name.
// Note that no locking is done when saving.

通过以下命令运行服务器：

<div class="termy">

```console
$ uvicorn main:app --reload

INFO:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
INFO:     Started reloader process [28720]
INFO:     Started server process [28722]
INFO:     Waiting for application startup.
INFO:     Application startup complete.
```

</div>

<details markdown="1">
<summary>关于 <code>uvicorn main:app --reload</code> 命令......</summary>

pkg crypto/rsa, method (*PrivateKey) Sign(io.Reader, []uint8, crypto.SignerOpts) ([]uint8, error)
pkg crypto/rsa, type PSSOptions struct, Hash crypto.Hash

# CL 157090043 crypto/tls: support TLS_FALLBACK_SCSV as a server., Adam Langley <******@****.***>
pkg crypto/tls, const TLS_FALLBACK_SCSV = 22016
pkg crypto/tls, const TLS_FALLBACK_SCSV uint16

		if err = nsqArgs.Validate(); err != nil {
			return nil, err
		}

		nsqTargets[k] = nsqArgs
	}
	return nsqTargets, nil
}

// DefaultPostgresKVS - default Postgres KV for server config.
var (
	DefaultPostgresKVS = config.KVS{
		config.KV{
			Key:   config.Enable,
			Value: config.EnableOff,
		},
		config.KV{
			Key:   target.PostgresFormat,
			Value: formatNamespace,

<div class="termy">

```console
$ uvicorn main:app --reload

INFO:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
INFO:     Started reloader process [28720]
INFO:     Started server process [28722]
INFO:     Waiting for application startup.
INFO:     Application startup complete.
```

</div>

<details markdown="1">
<summary><code>uvicorn main:app --reload</code>コマンドについて</summary>

			expectedContent:    encodedErrorResponse,
			expectedRespStatus: http.StatusOK,
		},
		// Test case - 5.
		// Anonymous user access denied response
		// Currently anonymous users cannot delete multiple objects in MinIO server
		5: {
			bucket:             bucketName,
			objects:            anonRequest,
			accessKey:          "",
			secretKey:          "",
			expectedContent:    encodedAnonResponse,

	s.Unlock()
	return diskID, nil
}

// Make a volume entry.
func (s *xlStorage) SetDiskID(id string) {
	// NO-OP for xlStorage as it is handled either by xlStorageDiskIDCheck{} for local disks or
	// storage rest server for remote disks.
}

func (s *xlStorage) MakeVolBulk(ctx context.Context, volumes ...string) error {
	for _, volume := range volumes {
		err := s.MakeVol(ctx, volume)

// as a hex encoded string
func (p *PutObjReader) MD5CurrentHexString() string {
	md5sumCurr := p.rawReader.MD5Current()
	var appendHyphen bool
	// md5sumcurr is not empty in two scenarios
	// - server is running in strict compatibility mode
	// - client set Content-Md5 during PUT operation
	if len(md5sumCurr) == 0 {
		// md5sumCurr is only empty when we are running
		// in non-compatibility mode.