// (1 << 63) - 1 is the maximum value that an int64 type can represent.
const (
	defaultMaxSize = math.MaxInt
	// defaultTTL defines the default time-to-live (TTL) for each cache entry.
	// When the TTL for cache entries is not specified, each cache entry will expire after 24 hours.
	defaultTTL = time.Hour * 24
)

// New creates and returns a new Store instance.
//
// Parameters:

     */
    int FILE_NOTIFY_CHANGE_SIZE = 0x00000008;

    /**
     * Any change to the last write-time of files in the watched directory or subtree causes a change notification wait
     * operation to return. The operating system detects a change to the last write-time only when the file is written
     * to the disk. For operating systems that use extensive caching, detection occurs only when the cache is

    public static final String WEB_FS_CRAWLER_START_TIME = "WebFsCrawlStartTime";

    /** Info map key for web/file system crawler end time. */
    public static final String WEB_FS_CRAWLER_END_TIME = "WebFsCrawlEndTime";

    /** Info map key for data crawler start time. */
    public static final String DATA_CRAWLER_START_TIME = "DataCrawlStartTime";

    /** Info map key for data crawler end time. */

var globalSftpMetrics sftpMetrics

func sftpTrace(s *sftp.Request, startTime time.Time, source string, user string, err error, sz int64) madmin.TraceInfo {
	var errStr string
	if err != nil {
		errStr = err.Error()
	}
	return madmin.TraceInfo{
		TraceType: madmin.TraceFTP,
		Time:      startTime,
		NodeName:  globalLocalNodeName,
		FuncName:  s.Method,
		Duration:  time.Since(startTime),
		Path:      s.Filepath,
		Error:     errStr,

Le processus qui se produit lorsque votre application API appelle l’*API externe* s’appelle un « callback ». Parce que le logiciel écrit par la personne développeuse externe envoie une requête à votre API puis votre API « rappelle », en envoyant une requête à une *API externe* (probablement créée par la même personne développeuse).

	gcStats := debug.GCStats{
		// If stats.PauseQuantiles is non-empty, ReadGCStats fills
		// it with quantiles summarizing the distribution of pause time.
		// For example, if len(stats.PauseQuantiles) is 5, it will be
		// filled with the minimum, 25%, 50%, 75%, and maximum pause times.
		PauseQuantiles: make([]time.Duration, 5),
	}
	debug.ReadGCStats(&gcStats)
	// Truncate GC stats to max 5 entries.
	if len(gcStats.PauseEnd) > 5 {

また `response` が生成された後、それを返す前にも追加できます。

例えば、リクエストの処理とレスポンスの生成にかかった秒数を含むカスタムヘッダー `X-Process-Time` を追加できます:

{* ../../docs_src/middleware/tutorial001_py310.py hl[10,12:13] *}

/// tip | 豆知識

ここでは、これらのユースケースに対してより正確になり得るため、`time.time()` の代わりに [`time.perf_counter()`](https://docs.python.org/3/library/time.html#time.perf_counter) を使用しています。 🤓

///

## 複数ミドルウェアの実行順序 { #multiple-middleware-execution-order }

from datetime import datetime, time, timedelta
from uuid import UUID

from fastapi import Body, FastAPI

app = FastAPI()


@app.put("/items/{item_id}")
async def read_items(
    item_id: UUID,
    start_datetime: datetime = Body(),
    end_datetime: datetime = Body(),
    process_after: timedelta = Body(),
    repeat_at: time | None = Body(default=None),
):
    start_process = start_datetime + process_after

        };

        for (long[] times : timeValues) {
            // Given
            FileBasicInfo info = new FileBasicInfo(times[0], // create time
                    times[1], // last access time
                    times[2], // last write time
                    times[3], // change time
                    TEST_ATTRIBUTES);

            // When & Then
            assertEquals(times[0], info.getCreateTime());

		select {
		case <-ctx.Done():
			return ctx.Err()
		default:
			// Sleep and stagger to avoid blocked CPU and thundering
			// herd upon start up sequence.
			time.Sleep(25*time.Millisecond + time.Duration(rand.Int63n(int64(100*time.Millisecond))))
			retries++
			// after 20 retries start logging that servers are not reachable yet
			if retries >= 20 {