On the request path, the *outermost* middleware runs first.

On the response path, it runs last.

For example:

```Python
app.add_middleware(MiddlewareA)
app.add_middleware(MiddlewareB)
```

This results in the following execution order:

  workflow_dispatch:
    inputs:
      debug_enabled:
        description: Run the build with tmate debugging enabled (https://github.com/marketplace/actions/debugging-with-tmate)
        required: false
        default: "false"

env:
  UV_SYSTEM_PYTHON: 1

jobs:
  job:
    if: github.repository_owner == 'fastapi'
    runs-on: ubuntu-latest
    permissions:
      contents: write
    steps:

  statuses: write

env:
  UV_SYSTEM_PYTHON: 1

jobs:
  smokeshow:
    if: ${{ github.event.workflow_run.conclusion == 'success' }}
    runs-on: ubuntu-latest

    steps:
      - name: Dump GitHub context
        env:
          GITHUB_CONTEXT: ${{ toJson(github) }}
        run: echo "$GITHUB_CONTEXT"
      - uses: actions/checkout@v5
      - uses: actions/setup-python@v5
        with:
          python-version: '3.9'

    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        go-version: [1.24.x]
        os: [ubuntu-latest]

    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-go@v5
        with:
          go-version: ${{ matrix.go-version }}
          check-latest: true
      - name: Start root lockdown tests
        run: |

      number:
        description: PR number
        required: true
      debug_enabled:
        description: 'Run the build with tmate debugging enabled (https://github.com/marketplace/actions/debugging-with-tmate)'
        required: false
        default: 'false'

env:
  UV_SYSTEM_PYTHON: 1

jobs:
  job:
    runs-on: ubuntu-latest
    permissions:
      discussions: write
    steps:
      - name: Dump GitHub context

import java.util.concurrent.Executor;

/**
 * An {@link Executor} that runs each task in the thread that invokes {@link Executor#execute
 * execute}.
 */
@GwtCompatible
enum DirectExecutor implements Executor {
  INSTANCE;

  @Override
  public void execute(Runnable command) {
    command.run();
  }

  @Override
  public String toString() {
    return "MoreExecutors.directExecutor()";

name: 'Lock Threads'

on:
  schedule:
    - cron: '0 0 * * *'
  workflow_dispatch:

permissions:
  issues: write

concurrency:
  group: lock

jobs:
  action:
    runs-on: ubuntu-latest
    steps:
      - uses: dessant/lock-threads@v3
        with:
          github-token: ${{ github.token }}
          issue-inactive-days: '365'
          exclude-any-issue-labels: 'do-not-close'

on:
  pull_request:
    types: [closed]
    branches:
      - release
      - release7x
      - release8x

permissions:
  issues: write

jobs:
  closeIssueOnPrMerge:
    runs-on: ubuntu-latest
    steps:
      - name: Closes issues related to a merged pull request.
        uses: ldez/gha-mjolnir@df0e84242364946fa3ad4e7556510e8086ad681a
        env:

      debug_enabled:
        description: 'Run the build with tmate debugging enabled (https://github.com/marketplace/actions/debugging-with-tmate)'
        required: false
        default: 'false'

jobs:
  latest-changes:
    runs-on: ubuntu-latest
    steps:
      - name: Dump GitHub context
        env:
          GITHUB_CONTEXT: ${{ toJson(github) }}
        run: echo "$GITHUB_CONTEXT"
      - uses: actions/checkout@v5

  group: ${{ github.workflow }}-${{ github.head_ref }}
  cancel-in-progress: true

permissions:
  contents: read

jobs:
  build:
    name: Build Tests with Go ${{ matrix.go-version }} on ${{ matrix.os }}
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        go-version: [1.24.x]
        os: [ubuntu-latest]
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-go@v5
        with: