---

## Install FastAPI { #install-fastapi }

The first step is to install FastAPI.

Make sure you create a [virtual environment](../virtual-environments.md){.internal-link target=_blank}, activate it, and then **install FastAPI**:

<div class="termy">

```console
$ pip install "fastapi[standard]"

---> 100%
```

</div>

/// note

アプリケーションをデプロイする際には、**複数のコア**を利用し、そしてより多くのリクエストを処理できるようにするために、プロセスの**レプリケーション**を持つことを望むでしょう。

前のチャプターである[デプロイメントのコンセプト](concepts.md){.internal-link target=_blank}にて見てきたように、有効な戦略がいくつかあります。

ここでは<a href="https://gunicorn.org/" class="external-link" target="_blank">**Gunicorn**</a>が**Uvicornのワーカー・プロセス**を管理する場合の使い方について紹介していきます。

/// info

<!-- NOTE: the current version of docker.md is outdated compared to English one.  -->

 * under the License.
 */
package org.apache.maven.repository.internal;

import org.apache.maven.model.building.ModelCache;
import org.eclipse.aether.RepositorySystemSession;

/**
 * Factory for {@link ModelCache} objects.
 *
 * @deprecated since 4.0.0, use {@code maven-api-impl} jar instead
 */
@Deprecated(since = "4.0.0")
public interface ModelCacheFactory {

 */
package org.apache.maven.api.services.xml;

import org.apache.maven.api.annotations.Experimental;
import org.apache.maven.api.plugin.descriptor.PluginDescriptor;

/**
 * Reads and writes a {@link PluginDescriptor} object to/from XML.
 *
 * @since 4.0.0
 */
@Experimental

 * under the License.
 */
package org.apache.maven.api.services.xml;

import org.apache.maven.api.annotations.Experimental;
import org.apache.maven.api.settings.Settings;

/**
 * Reads and writes a {@link Settings} object to/from XML.
 *
 * @since 4.0.0
 */
@Experimental

import org.apache.maven.building.Source;

/**
 * Provides access to the contents of settings independently of the backing store (e.g. file system, database, memory).
 *
 *
 * @deprecated instead use {@link Source}
 */
@Deprecated

 * under the License.
 */
package org.apache.maven.plugin;

import org.apache.maven.lifecycle.LifecycleExecutionException;

/**
 * Provides context for mojo execution. Invocation of {@link #run(MojoExecution)} will result in actual execution
 */
public interface MojoExecutionRunner {
    /**
     * Runs mojo execution
     *
     * @param execution mojo execution

 */

package com.google.common.collect;

import com.google.common.testing.NullPointerTester;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * Test cases for {@link Range} which cannot run as GWT tests.
 *
 * @author Gregory Kick
 * @see RangeTest
 */
@NullUnmarked
public class RangeNonGwtTest extends TestCase {

  public void testNullPointers() {

package com.google.common.util.concurrent;

import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;
import org.jspecify.annotations.Nullable;

/**
 * Unchecked version of {@link java.util.concurrent.TimeoutException}.
 *
 * @author Kevin Bourrillion
 * @since 1.0
 */
@J2ktIncompatible
@GwtIncompatible
public class UncheckedTimeoutException extends RuntimeException {

 */

package com.google.common.cache;

import com.google.common.testing.EqualsTester;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * Unit tests of {@link RemovalNotification}.
 *
 * @author Ben Yu
 */
@NullUnmarked
public class RemovalNotificationTest extends TestCase {

  public void testEquals() {
    new EqualsTester()
        .addEqualityGroup(