.fastFallback(true)
    .build();
```

 *  New: Change the build from Kotlin-JVM to Kotlin-multiplatform (which includes JVM). Both
    native and JavaScript platforms are unstable preview releases and subject to
    backwards-incompatible changes in forthcoming releases.
 *  Fix: Don't crash loading the public suffix database resource in obfuscated builds.

 *  Fix: Change the return type of `MockWebServer.takeRequest()` to be nullable.
 *  Fix: Make `Call.clone()` public to Kotlin callers.


## Version 4.0.0-RC1

_2019-06-03_

 *  First stable preview of OkHttp 4.


## Version 3.x

[Change log](https://square.github.io/okhttp/changelog_3x/)


 [bom]: https://docs.gradle.org/6.2/userguide/platforms.html#sub:bom_import

!!! tip
    In a hurry and already know this stuff? Jump to the [`Dockerfile` below 👇](#build-a-docker-image-for-fastapi).

<details>
<summary>Dockerfile Preview 👀</summary>

```Dockerfile
FROM python:3.9

WORKDIR /code

COPY ./requirements.txt /code/requirements.txt

RUN pip install --no-cache-dir --upgrade -r /code/requirements.txt

COPY ./app /code/app

使用 Linux 容器有几个优点，包括**安全性**、**可复制性**、**简单性**等。

!!! tip
    赶时间并且已经知道这些东西了？ 跳转到下面的 [`Dockerfile` 👇](#fastapi-docker_1)。


<details>
<summary>Dockerfile Preview 👀</summary>

```Dockerfile
FROM python:3.9

WORKDIR /code

COPY ./requirements.txt /code/requirements.txt

RUN pip install --no-cache-dir --upgrade -r /code/requirements.txt

COPY ./app /code/app

* Update GitHub Actions, use commit from PR for docs preview, not commit from pre-merge. PR [#1761](https://github.com/tiangolo/fastapi/pull/1761).
* Update GitHub Actions, refactor Gitter bot. PR [#1746](https://github.com/tiangolo/fastapi/pull/1746).

## 0.60.0

* Add GitHub Action to watch for missing preview docs and trigger a preview deploy. PR [#1740](https://github.com/tiangolo/fastapi/pull/1740).

automations:

  # Add a label that indicates how many minutes it will take to review the PR and categorizes it
  estimated_time_to_review:
    if:
      - {{ ('estimated_time_to_review' | isEnabledAutomation(pr)) }}
    run:
      - action: add-label@v1
        # etr is defined in the last section of this example
        args:
          label: "{{ calc.etr }} min review"

      },
      "protocol": "HBONE",
      "uid": "Kubernetes//Pod/bookinfo/reviews-v3-5b9bd44f4-7fff4",
      "name": "reviews-v3-5b9bd44f4-7fff4",
      "namespace": "bookinfo",
      "trustDomain": "cluster.local",
      "serviceAccount": "bookinfo-reviews",
      "workloadName": "reviews-v3",
      "workloadType": "deployment",
      "canonicalName": "reviews",
      "canonicalRevision": "v3",
      "network": "network3",

* [Créent des Pull Requests](help-fastapi.md#creer-une-pull-request){.internal-link target=_blank}.
* Review les Pull Requests, [particulièrement important pour les traductions](contributing.md#traductions){.internal-link target=_blank}.

Une salve d'applaudissements pour eux. 👏 🙇

## Utilisateurs les plus actifs le mois dernier

bookinfo           reviews-v1-5b5d6494f4-qwjv4                          10.244.1.37 ambient-worker        namespace-istio-waypoint            HBONE
bookinfo           reviews-v2-5b667bcbf8-q5pn2                          10.244.1.38 ambient-worker        namespace-istio-waypoint            HBONE

* Suggest a new **feature**.

**Note**: if you do it, then I'm going to ask you to also help others. 😉

## Review Pull Requests

You can help me review pull requests from others.

Again, please try your best to be kind. 🤗

---

Here's what to keep in mind and how to review a pull request:

### Understand the problem