*
 * <pre>
 * Thread1: acquire(LockA) --X acquire(LockB)
 * Thread2: acquire(LockB) --X acquire(LockA)
 * </pre>
 *
 * <p>Neither thread will progress because each is waiting for the other. In more complex
 * applications, cycles can arise from interactions among more than 2 locks:
 *
 * <pre>
 * Thread1: acquire(LockA) --X acquire(LockB)
 * Thread2: acquire(LockB) --X acquire(LockC)
 * ...

### Provider-specific Notes

#### Various

   Core changes:

  * Support for load balancers with source ranges

#### AWS

Core changes:

  * Support for ELBs with complex configurations: better subnet selection with
multiple subnets, and internal ELBs
  * Support for VPCs with private dns names
  * Multiple fixes to EBS volume mounting code for robustness, and to support

*   Fixes a null dereference in Grappler's `TrySimplify`
    ([CVE-2021-29616](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29616))
*   Fixes a crash in `tf.transpose` with complex inputs
    ([CVE-2021-29618](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29618))
*   Fixes a crash in `tf.strings.substr` due to `CHECK`-fail

            string(TF_Message(s_)));

  TF_DeleteFunction(grad_func1);
  TF_DeleteFunction(grad_func2);
}

TEST_F(CApiFunctionTest, ImportFunctionDef) {
  /*
   * Using a fairly complex function with output names
   *
   *                  |  |  |
   *                  v  v  /
   *                  add  /
   *                   |  |
   *            +------+  |

function <code>Syscall</code> in package <code>syscall</code> should
use the name <code>·Syscall</code> instead of the equivalent name
<code>syscall·Syscall</code> in its <code>TEXT</code> directive).
For more complex situations, explicit annotation is needed.
These annotations use pseudo-instructions defined in the standard
<code>#include</code> file <code>funcdata.h</code>.
</p>

<p>

            <li>Property check: {@code ${my.property} != 'some-value'}</li>
            <li>Regex matching: {@code matches(${os.version}, '.*aws')}</li>
            <li>Complex condition: {@code ${os.name} == 'windows' && ${os.arch} != 'amd64' && inrange(${os.version}, '[10,)')}</li>
            <li>String length check: {@code length(${user.name}) > 5}</li>

- The feature gate `RootCAConfigMap` graduated to GA in v1.21 and therefore will...

# Segurança { #security }

Há várias formas de lidar segurança, autenticação e autorização.

E isso normalmente é um tópico “difícil” e complexo.

Em muitos frameworks e sistemas, apenas lidar com segurança e autenticação exige muito esforço e código (em muitos casos isso pode ser 50% ou mais de todo o código escrito).

Aber hier ist der entscheidende Punkt.

Der Code für Sicherheit und Dependency Injection wird einmal geschrieben.

Sie können es so komplex gestalten, wie Sie möchten. Und dennoch haben Sie es nur einmal geschrieben, an einer einzigen Stelle. Mit all der Flexibilität.

- Fixed cronjob controller handling of complex schedules, like `30 6-16/4 * * 1-5`, for example. ([#118724](https://github.com/kubernetes/kubernetes/pull/118724), [@soltysh](https://github.com/soltysh))