有些情况下，您可能想告诉您的 API **用户**，您的应用程序可以携带一些数据调用*他们的*应用程序（给它们发送请求），通常是为了**通知**某种**事件**。

这意味着，与通常由您的用户向您的 API 发送请求的流程相反，是**您的 API**（或您的应用）可以**向他们的系统**（他们的 API、他们的应用）**发送请求**。

这通常被称为**网络钩子**（Webhook）。

## 使用网络钩子的步骤 { #webhooks-steps }

通常的过程是**您**在代码中**定义**要发送的消息，即**请求的主体**。

您还需要以某种方式定义您的应用程序将在**何时**发送这些请求或事件。

**用户**会以某种方式（例如在某个网页仪表板上）定义您的应用程序发送这些请求应该使用的 **URL**。

所有关于注册网络钩子的 URL 的**逻辑**以及发送这些请求的实际代码都由您决定。您可以在**自己的代码**中以任何想要的方式来编写它。

* `http://localhost`
* `https://localhost`
* `http://localhost:8080`

Hepsi `localhost` üzerinde olsa bile, farklı protocol veya port kullandıkları için farklı "origin" sayılırlar.

## Adımlar { #steps }

    this.containsZero = containsZero;
  }

  private static final int C1 = 0xcc9e2d51;
  private static final int C2 = 0x1b873593;

  /*
   * This method was rewritten in Java from an intermediate step of the Murmur hash function in
   * http://code.google.com/p/smhasher/source/browse/trunk/MurmurHash3.cpp, which contained the
   * following header:
   *

* `http://localhost`
* `https://localhost`
* `http://localhost:8080`

Auch wenn sie alle in `localhost` sind, verwenden sie unterschiedliche Protokolle oder Ports, daher sind sie unterschiedliche „Origins“.

## Schritte { #steps }

  - If there are any errors, read the error and fix your code.
  - IMPORTANT NOTE: if the first import fails, you have to select and apply `Synchronization disabled`, then repeat the step above.
    Otherwise, TeamCity complains "Can't find the previous revision, please commit current settings first".

### Set metadata

In below example `minio-go` is used to set the storage class to `REDUCED_REDUNDANCY`. This means this object will be split across 6 data drives and 2 parity drives (as per the storage class set in previous step).

```go
s3Client, err := minio.New("localhost:9000", "YOUR-ACCESSKEYID", "YOUR-SECRETACCESSKEY", true)
if err != nil {
 log.Fatalln(err)
}

object, err := os.Open("my-testfile")
if err != nil {

    this.containsZero = containsZero;
  }

  private static final int C1 = 0xcc9e2d51;
  private static final int C2 = 0x1b873593;

  /*
   * This method was rewritten in Java from an intermediate step of the Murmur hash function in
   * http://code.google.com/p/smhasher/source/browse/trunk/MurmurHash3.cpp, which contained the
   * following header:
   *

        // to specify the absolute path to these files in a customized components.xml
        // file. Ideally, we'd do full pattern-evaluation against the sysprops, but this
        // is a first step. There are several replacements below, in order to normalize
        // the path character before we operate on the string as a regex input, and
        // in order to avoid surprises with the File construction...

    for (int i = 0; i < 8; i++) {
      limiter.acquire(); // // #1
    }
    stopwatch.sleepMillis(4500); // #2: back to cold state (warmup period + repay last acquire)
    for (int i = 0; i < 3; i++) { // only three steps, we're somewhere in the warmup period
      limiter.acquire(); // #3
    }

    limiter.setRate(4.0); // double the rate!
    limiter.acquire(); // #4, we repay the debt of the last acquire (imposed by the old rate)

    for (int i = 0; i < 8; i++) {
      limiter.acquire(); // // #1
    }
    stopwatch.sleepMillis(4500); // #2: back to cold state (warmup period + repay last acquire)
    for (int i = 0; i < 3; i++) { // only three steps, we're somewhere in the warmup period
      limiter.acquire(); // #3
    }

    limiter.setRate(4.0); // double the rate!
    limiter.acquire(); // #4, we repay the debt of the last acquire (imposed by the old rate)