But in many cases, you will want to run several worker processes at the same time.

### Multiple Processes - Workers { #multiple-processes-workers }

You can also use `File()` with `UploadFile`, for example, to set additional metadata:

{* ../../docs_src/request_files/tutorial001_03_an_py39.py hl[9,15] *}

## Multiple File Uploads { #multiple-file-uploads }

It's possible to upload several files at the same time.

They would be associated to the same "form field" sent using "form data".

   - Rebase to tidy commits before submitting (e.g., `git rebase -i main` to squash typos or reword messages), unless multiple contributors worked on the branch.
   - Keep PRs focused—one feature or fix. Split large changes into multiple PRs.

3. **Testing**:
   - Include unit tests for new functionality or bug fixes.
   - Ensure existing tests pass (`make test`).

    }

    /**
     * Benchmark that tests multiple property configurations in a single operation.
     * This simulates a more realistic scenario where multiple properties are set on a bean.
     */
    @Benchmark
    public void benchmarkOriginalHelperMultipleProperties() throws Exception {
        RealisticTestBean bean = new RealisticTestBean();

        // Set multiple properties in one benchmark iteration

        assertEquals("mybucket", getField(conn, "bucketName"));
        assertEquals("", getField(conn, "objectName"));
    }

    /**
     * Test URL with multiple consecutive slashes.
     * Note: Java's URL class does NOT normalize multiple slashes in the path.
     */
    public void test_urlParsing_multipleSlashes() throws Exception {
        URL url = new URL("gcs://mybucket//path//to//object.txt");

# Currently, there is no way to pass multiple cookies with the same name.
# The only way to pass multiple values for cookie params is to serialize them using

        assertEquals("mybucket", getField(conn, "bucketName"));
        assertEquals("", getField(conn, "objectName"));
    }

    /**
     * Test URL with multiple consecutive slashes.
     * Note: Java's URL class does NOT normalize multiple slashes in the path.
     */
    public void test_urlParsing_multipleSlashes() throws Exception {
        URL url = new URL("storage://mybucket//path//to//object.txt");

import static java.lang.annotation.RetentionPolicy.RUNTIME;

/**
 * Provides a unique identifier for dependencies when multiple implementations
 * of the same type are available.
 * <p>
 * This annotation can be used in conjunction with {@link Inject} to specify
 * which implementation should be injected when multiple candidates exist.
 * The value represents a unique identifier for the dependency.
 * <p>
 * Example usage:
 * <pre>

# Aplicações Maiores - Múltiplos Arquivos { #bigger-applications-multiple-files }

Se você está construindo uma aplicação ou uma API web, é raro que você possa colocar tudo em um único arquivo.

**FastAPI** oferece uma ferramenta conveniente para estruturar sua aplicação, mantendo toda a flexibilidade.

/// info | Informação

Se você vem do Flask, isso seria o equivalente aos Blueprints do Flask.

///

### One Load Balancer - Multiple Worker Containers { #one-load-balancer-multiple-worker-containers }

When working with **Kubernetes** or similar distributed container management systems, using their internal networking mechanisms would allow the single **load balancer** that is listening on the main **port** to transmit communication (requests) to possibly **multiple containers** running your app.