{* ../../docs_src/background_tasks/tutorial002_an_py310.py hl[13,15,22,25] *}


In this example, the messages will be written to the `log.txt` file *after* the response is sent.

If there was a query in the request, it will be written to the log in a background task.

And then another background task generated at the *path operation function* will write a message using the `email` path parameter.

 * Fix: Cache SPDY responses even if the response body is closed prematurely.
 * Fix: Use strict timeouts when aborting a download.
 * Fix: Support Shoutcast HTTP responses like `ICY 200 OK`.
 * Fix: Don't unzip if there isn't a response body.
 * Fix: Don't leak gzip streams on redirects.
 * Fix: Don't do DNS lookups on invalid hosts.
 * Fix: Exhaust the underlying stream when reading gzip streams.
 * Fix: Support the `PATCH` method.

    /**
     * Returns a new response body that transmits this string. If [contentType] is non-null and
     * has a charset other than utf-8 the behaviour differs by platform.
     *
     * On the JVM the encoding will be used instead of utf-8.
     *
     * On non JVM platforms, this method will fail for encodings other than utf-8.
     */
    @JvmStatic
    @JvmName("create")

  - [Changelog since v1.14.9](#changelog-since-v1149)
    - [Other notable changes](#other-notable-changes)
- [v1.14.9](#v1149)
  - [Downloads for v1.14.9](#downloads-for-v1149)
    - [Client Binaries](#client-binaries-1)
    - [Server Binaries](#server-binaries-1)
    - [Node Binaries](#node-binaries-1)
  - [Changelog since v1.14.8](#changelog-since-v1148)
    - [Other notable changes](#other-notable-changes-1)
- [v1.14.8](#v1148)

      return false;
    }
    Stats other = (Stats) obj;
    return count == other.count
        && doubleToLongBits(mean) == doubleToLongBits(other.mean)
        && doubleToLongBits(sumOfSquaresOfDeltas) == doubleToLongBits(other.sumOfSquaresOfDeltas)
        && doubleToLongBits(min) == doubleToLongBits(other.min)
        && doubleToLongBits(max) == doubleToLongBits(other.max);
  }

  /**
   * {@inheritDoc}
   *

Because of this, **FastAPI** itself provides an alternative API documentation (using ReDoc), which you can access at <a href="http://127.0.0.1:8000/redoc" class="external-link" target="_blank">http://127.0.0.1:8000/redoc</a>:

<img src="/img/tutorial/path-params/image02.png">

    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj instanceof VersionRange other) {
            return Objects.equals(recommendedVersion, other.recommendedVersion)
                    && Objects.equals(restrictions, other.restrictions);
        } else {
            return false;
        }
    }

    @Override
    public int hashCode() {

   * completing the returned {@code Future}.)
   *
   * <p>The returned {@code Future} attempts to keep its cancellation state in sync with that of the
   * input future and that of the future returned by the chain function. That is, if the returned
   * {@code Future} is cancelled, it will attempt to cancel the other two, and if either of the

	// HTTP request for testing when `objectLayer` is set to `nil`.
	// There is no need to use an existing bucket and valid input for creating the request
	// since the `objectLayer==nil`  check is performed before any other checks inside the handlers.
	// The only aim is to generate an HTTP request in a way that the relevant/registered end point is evoked/called.

 *
 * <p>{@code Multiset} refines the specifications of several methods from {@code Collection}. It
 * also defines an additional query operation, {@link #count}, which returns the count of an
 * element. There are five new bulk-modification operations, for example {@link #add(Object, int)},
 * to add or remove multiple occurrences of an element at once, or to set the count of an element to