"""
        Add an event handler function for startup or shutdown.

        This method is kept for backward compatibility after Starlette removed
        support for on_startup/on_shutdown handlers.

        Ref: https://github.com/Kludex/starlette/pull/3117
        """
        assert event_type in ("startup", "shutdown")
        if event_type == "startup":
            self.on_startup.append(func)
        else:

"[anon: Go: ...]". This setting is only used on Linux. For Go 1.25, it defaults
to `decoratemappings=1`, enabling annotations. Using `decoratemappings=0`
reverts to the pre-Go 1.25 behavior. This setting is fixed at program startup
time, and can't be modified by changing the `GODEBUG` environment variable
after the program starts.

Go 1.25 added a new `embedfollowsymlinks` setting that controls whether the

const TimeFormat string = "15:04:05 MST 01/02/2006"

var matchingFuncNames = [...]string{
	"http.HandlerFunc.ServeHTTP",
	"cmd.serverMain",
	// add more here ..
}

// quietFlag: Hide startup messages if enabled
// jsonFlag: Display in JSON format, if enabled
var (
	quietFlag, jsonFlag, anonFlag bool
	// Custom function to format error
	// can be registered by RegisterError

INFO:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
INFO:     Started reloader process [2248755] using WatchFiles
INFO:     Started server process [2248757]
INFO:     Waiting for application startup.
INFO:     Application startup complete.
```

</div>

<details markdown="1">
<summary>關於指令 <code>fastapi dev</code>...</summary>

- Fixed a startup probe race condition that caused main containers to remain stuck in "Initializing" state when sidecar containers with startup probes had failed initially but succeeded on restart in pods with `restartPolicy=Never`. ([#133072](https://github.com/kubernetes/kubernetes/pull/133072), [@AadiDev005](https://github.com/AadiDev005))...

	ResumeItemsFailed  uint64 `json:"-"`
	ResumeItemsSkipped uint64 `json:"-"`
	ResumeBytesDone    uint64 `json:"-"`
	ResumeBytesFailed  uint64 `json:"-"`
	ResumeBytesSkipped uint64 `json:"-"`

	// Filled on startup/restarts.
	QueuedBuckets []string

	// Filled during heal.
	HealedBuckets []string

	// ID of the current healing operation
	HealID string

	ItemsSkipped uint64
	BytesSkipped uint64

通过 **FastAPI** 你可以获得所有 **Starlette** 的特性（FastAPI 就像加强版的 Starlette）：

* 令人惊叹的性能。它是[Python 可用的最快的框架之一，和 **NodeJS** 及 **Go** 相当](https://github.com/encode/starlette#performance)。
* **支持 WebSocket**。
* 进程内后台任务。
* Startup 和 shutdown 事件。
* 测试客户端基于 HTTPX。
* **CORS**、GZip、静态文件、流响应。
* 支持 **Session 和 Cookie**。
* 100% 测试覆盖率。
* 代码库 100% 类型注释。

## Pydantic 特性 { #pydantic-features }

`role_policy` configuration parameter or the `MINIO_IDENTITY_OPENID_ROLE_POLICY` environment variable. The value is a comma-separated list of IAM access policy names already defined in the server. In this situation, the server prints a role ARN at startup that must be specified as a `RoleArn` API request parameter in the STS AssumeRoleWithWebIdentity API call. When using Role Policies, multiple OpenID providers and/or client applications (with unique client IDs) may be configured with independent role...

	// resourceMetricsHelpMap maps metric name to its help string
	resourceMetricsHelpMap map[MetricName]string
	resourceMetricsGroups  []*MetricsGroupV2
	// initial values for drives (at the time  of server startup)
	// used for calculating avg values for drive metrics
	latestDriveStats      map[string]madmin.DiskIOStats
	latestDriveStatsMu    sync.RWMutex
	lastDriveStatsRefresh time.Time
)

///

/// check

You don't have to worry about performance when including routers.

This will take microseconds and will only happen at startup.

So it won't affect performance. ⚡

///

### Include an `APIRouter` with a custom `prefix`, `tags`, `responses`, and `dependencies` { #include-an-apirouter-with-a-custom-prefix-tags-responses-and-dependencies }