// persist in-memory state to disk after every 10secs.
				batchLogIf(ctx, ri.updateAfter(ctx, api, 10*time.Second, job))

				if wait := globalBatchConfig.ReplicationWait(); wait > 0 {
					time.Sleep(wait)
				}
			}()
		}
		wk.Wait()

		ri.RetryAttempts = attempts
		ri.Complete = ri.ObjectsFailed == 0
		ri.Failed = ri.ObjectsFailed > 0

		globalBatchJobsMetrics.save(job.ID, ri)

   */
  void awaitRunning();

  /**
   * Waits for the {@link Service} to reach the {@linkplain State#RUNNING running state} for no more
   * than the given time.
   *
   * @param timeout the maximum time to wait
   * @param unit the time unit of the timeout argument
   * @throws TimeoutException if the service has not reached the given state within the deadline

	}

	var i int
	for toExpire := range expireCh {
		select {
		case <-ctx.Done():
			return
		default:
		}
		if i > 0 {
			if wait := globalBatchConfig.ExpirationWait(); wait > 0 {
				time.Sleep(wait)
			}
		}
		i++
		wk.Take()
		go func(toExpire []expireObjInfo) {
			defer wk.Give()

			toExpireAll := make([]expireObjInfo, 0, len(toExpire))

  }

  /** For testing: force this web socket to release its threads. */
  @Throws(InterruptedException::class)
  fun tearDown() {
    taskQueue.shutdown()
    taskQueue.idleLatch().await(10, TimeUnit.SECONDS)
  }

  @Synchronized fun sentPingCount(): Int = sentPingCount

  @Synchronized fun receivedPingCount(): Int = receivedPingCount

        override fun requestHeadersEnd(
          call: Call,
          request: Request,
        ) {
          // Wait for the server to send the duplex response before acting on the 301 response
          // and resetting the stream.
          duplexResponseSent.await()
        }
      }
    client =
      client
        .newBuilder()

    }

    @Test
    void testExpiration() throws InterruptedException {
        // Registration should not be expired initially with long timeout
        assertFalse(registration.isExpired(60000));

        // Wait a bit to ensure some time has passed
        Thread.sleep(50);
        // Should be expired with very short timeout (shorter than sleep time)
        assertTrue(registration.isExpired(10));
    }

    @Test

				UserDefined:      userDefined,
			})
			if err != nil {
				errs[idx] = err
				return
			}
			objInfos[idx] = objInfo
		}(i, req)
	}
	wg.Wait()

	return objInfos, errs

MC_CONFIG_DIR="{{ .Values.configPathmc }}"
MC="/usr/bin/mc --insecure --config-dir ${MC_CONFIG_DIR}"
{{- else }}
MC="/usr/bin/mc --insecure"
{{- end }}

# connectToMinio
# Use a check-sleep-check loop to wait for MinIO service to be available
connectToMinio() {
	SCHEME=$1
	ATTEMPTS=0
	LIMIT=29 # Allow 30 attempts
	set -e   # fail if we can't read the keys.
	ACCESS=$(cat /config/rootUser)
	SECRET=$(cat /config/rootPassword)

    peer.acceptFrame() // RST_STREAM
    peer.acceptFrame() // DEGRADED PING
    peer.acceptFrame() // AWAIT PING
    peer.sendFrame().ping(true, Http2Connection.DEGRADED_PING, 1) // DEGRADED PONG
    peer.sendFrame().ping(true, Http2Connection.AWAIT_PING, 0) // AWAIT PONG
    peer.play()

    // Play it back.
    val connection = connect(peer)

8. 注意，*路径操作函数*使用的是普通函数，不是异步函数；

    与往常一样，在 FastAPI 中，可以按需组合普通函数与异步函数；

    如果不清楚何时使用异步函数或普通函数，请参阅**急不可待？**一节中对 <a href="https://fastapi.tiangolo.com/async/#in-a-hurry" target="_blank" class="internal-link">`async` 与 `await`</a> 的说明；

9. *路径操作函数*返回的不是数据类（虽然它可以返回数据类），而是返回内含数据的字典列表；

    FastAPI 使用（包含数据类的） `response_model` 参数转换响应。

把 `dataclasses` 与其它类型注解组合在一起，可以组成不同形式的复杂数据结构。

更多内容详见上述代码内的注释。

## 深入学习