Es gibt eine **spezielle** Umgebungsvariable namens **`PATH`**, die von den Betriebssystemen (Linux, macOS, Windows) verwendet wird, um Programme zu finden, die ausgeführt werden sollen.

Der Wert der Variable `PATH` ist ein langer String, der aus Verzeichnissen besteht, die auf Linux und macOS durch einen Doppelpunkt `:` und auf Windows durch ein Semikolon `;` getrennt sind.

Zum Beispiel könnte die `PATH`-Umgebungsvariable so aussehen:

    public void testUnicodeStringHandling() {
        ByteBuffer bb = ByteBuffer.wrap(testBuffer).order(ByteOrder.LITTLE_ENDIAN);

        bb.putShort((short) 3); // version
        bb.putShort((short) 100); // size (larger to accommodate unicode strings)
        bb.putShort((short) 1); // serverType
        bb.putShort((short) 0); // rflags
        bb.putShort((short) 5); // proximity
        bb.putShort((short) 300); // ttl

   * until a nonzero result is found; imposes "dictionary order." If the end of one iterable is
   * reached, but not the other, the shorter iterable is considered to be less than the longer one.
   * For example, a lexicographical natural ordering over integers considers {@code [] < [1] < [1,
   * 1] < [1, 2] < [2]}.
   *

    }

    /**
     * {@return the list of patterns for the files to include}
     * The path separator is {@code /} on all platforms, including Windows.
     * The prefix before the {@code :} character, if present and longer than 1 character, is the syntax.
     * If no syntax is specified, or if its length is 1 character (interpreted as a Windows drive),
     * the default is a Maven-specific variation of the {@code "glob"} pattern.
     *

That way, you can create a token with an expiration of, let's say, 1 week. And then when the user comes back the next day with the token, you know that user is still logged in to your system.

Перед развертыванием убедитесь, что вы вошли в систему:

<div class="termy">

```console
$ fastapi login

You are logged in to FastAPI Cloud 🚀
```

</div>

Затем разверните приложение:

<div class="termy">

```console
$ fastapi deploy

Deploying to FastAPI Cloud...

✅ Deployment successful!

The response object will also have autocompletion:

<img src="/img/tutorial/generate-clients/image05.png">

## FastAPI App with Tags { #fastapi-app-with-tags }

In many cases, your FastAPI app will be bigger, and you will probably use tags to separate different groups of *path operations*.

For example, you could have a section for **items** and another section for **users**, and they could be separated by tags:

	// test fallback to IndexRune
	{"oxoxoxoxoxoxoxoxoxoxox☺", "☺", 22},
	// invalid UTF-8 byte sequence (must be longer than bytealg.MaxBruteForce to
	// test that we don't use IndexRune)
	{"xx0123456789012345678901234567890123456789012345678901234567890120123456789012345678901234567890123456xxx\xed\x9f\xc0", "\xed\x9f\xc0", 105},
}

    // Starting with an 8k buffer, double the size of each successive buffer. Smaller buffers
    // quadruple in size until they reach 8k, to minimize the number of small reads for longer
    // streams. Buffers are retained in a deque so that there's no copying between buffers while
    // reading and so all of the bytes in each new allocated buffer are available for reading from
    // the stream.

      - tutorial/security/simple-oauth2.md
      - tutorial/security/oauth2-jwt.md
    - tutorial/middleware.md
    - tutorial/cors.md
    - tutorial/sql-databases.md
    - tutorial/bigger-applications.md
    - tutorial/stream-json-lines.md
    - tutorial/server-sent-events.md
    - tutorial/background-tasks.md
    - tutorial/metadata.md
    - tutorial/static-files.md
    - tutorial/testing.md