* @return A new RequestParameter object with parsed values
         */
        protected static RequestParameter parse(final HttpServletRequest request) {
            final String query = request.getParameter("q");
            final String[] tags = getParamValueArray(request, "label");
            final String[] fields = getParamValueArray(request, "field");

import jakarta.validation.constraints.Size;

/**
 * Form class for editing request header configurations in the admin interface.
 * This form extends CreateForm to include fields necessary for updating existing request header entries,
 * including tracking information for optimistic locking and audit trails.
 * Request headers are used to customize HTTP requests sent during web crawling operations.
 *
 */
public class EditForm extends CreateForm {

Und das verteilte Containersystem mit dem **Load Balancer** würde **die Requests abwechselnd** an jeden einzelnen Container mit Ihrer Anwendung verteilen. Jeder Request könnte also von einem der mehreren **replizierten Container** verarbeitet werden, in denen Ihre Anwendung ausgeführt wird.

   * long, long)} using the requested {@link MapMode}.
   *
   * <p>Files are mapped from offset 0 to {@code size}.
   *
   * <p>If the mode is {@link MapMode#READ_WRITE} and the file does not exist, it will be created
   * with the requested {@code size}. Thus this method is useful for creating memory mapped files
   * which do not yet exist.
   *

    void testSequentialOperations() {
        // Given
        request.setNotifyFlags(0);
        request.setCompletionFilter(0);

        // When - first write
        byte[] buffer1 = new byte[512];
        request.writeBytesWireFormat(buffer1, 0);

        // Update values
        request.setNotifyFlags(Smb2ChangeNotifyRequest.SMB2_WATCH_TREE);
        request.setCompletionFilter(0xFFF);

        // Second write

    }

    /**
     * Sets the request timeout.
     * @param bulkRequestTimeout The request timeout.
     */
    public void setRequestTimeout(final String bulkRequestTimeout) {
        requestTimeout = bulkRequestTimeout;
    }

    /**
     * Sets the request cache size.
     * @param requestCacheSize The request cache size.
     */

# Using Dataclasses { #using-dataclasses }

FastAPI is built on top of **Pydantic**, and I have been showing you how to use Pydantic models to declare requests and responses.

But FastAPI also supports using <a href="https://docs.python.org/3/library/dataclasses.html" class="external-link" target="_blank">`dataclasses`</a> the same way:

{* ../../docs_src/dataclasses/tutorial001.py hl[1,7:12,19:20] *}

# Verwendung von Datenklassen

FastAPI basiert auf **Pydantic** und ich habe Ihnen gezeigt, wie Sie Pydantic-Modelle verwenden können, um Requests und Responses zu deklarieren.

Aber FastAPI unterstützt auf die gleiche Weise auch die Verwendung von <a href="https://docs.python.org/3/library/dataclasses.html" class="external-link" target="_blank">`dataclasses`</a>:

{* ../../docs_src/dataclasses/tutorial001.py hl[1,7:12,19:20] *}

Цей middleware обробляє два типи HTTP-запитів...

### Попередні CORS-запити (preflight requests)

Це будь-які `OPTIONS` - запити, що містять заголовки `Origin` та `Access-Control-Request-Method`.

У такому випадку middleware перехопить вхідний запит і відповість відповідними CORS-заголовками, повертаючи або `200`, або `400` для інформаційних цілей.

        "upgrade".equals(request.header("Connection"), ignoreCase = true)
    try {
      exchange.writeRequestHeaders(request)

      if (hasRequestBody) {
        // If there's a "Expect: 100-continue" header on the request, wait for a "HTTP/1.1 100
        // Continue" response before transmitting the request body. If we don't get that, return
        // what we did get (such as a 4xx response) without ever transmitting the request body.