Por exemplo, em vez de utilizar a mesma sessão do banco de dados, você criaria uma nova sessão dentro da tarefa de background, e você obteria os objetos do banco de dados utilizando essa nova sessão. E então, em vez de passar o objeto obtido do banco de dados como um parâmetro para a função da tarefa de background, você passaria o ID desse objeto e buscaria ele novamente dentro da função da tarefa de background.

## Gerenciadores de contexto

  <modelVersion>4.0.0</modelVersion>
  <parent>
    <groupId>org.apache.maven</groupId>
    <artifactId>maven-api</artifactId>
    <version>4.0.0-beta-6-SNAPSHOT</version>
  </parent>

  <artifactId>maven-api-plugin</artifactId>

  <name>Maven 4 API :: Plugin</name>

  <modelVersion>4.0.0</modelVersion>
  <parent>
    <groupId>org.apache.maven</groupId>
    <artifactId>maven</artifactId>
    <version>4.0.0-beta-6-SNAPSHOT</version>

    <relativePath>../../</relativePath>
  </parent>

  <artifactId>maven-toolchain-builder</artifactId>

  <name>Maven Toolchain Builder (deprecated)</name>

    }

    /**
     * The event "artifact resolved" if fired WHENEVER an artifact is resolved, BUT it happens also when an artifact
     * descriptor (model, the POM) is being built, and parent (and parent of parent...) is being asked for. Hence, this
     * method "filters" out in WHICH artifact are we interested in, but it intentionally neglects extension as

          <type>String</type>
        </field>
        <field>
          <name>classLoadingStrategy</name>
          <description>The class loading strategy: 'self-first' (the default), 'parent-first' (loads classes from the parent, then from the extension) or 'plugin' (follows the rules from extensions defined as plugins).</description>
          <version>1.1.0+</version>
          <defaultValue>self-first</defaultValue>

// Cancellation/timeouts are removed, so parent cancellations/timeout will
// not propagate from parent.
// Context values are preserved.
// This can be used for goroutines that live beyond the parent context.
func bgContext(parent context.Context) context.Context {
	return bgCtx{parent: parent}
}

type bgCtx struct {
	parent context.Context
}

func (a bgCtx) Done() <-chan struct{} {

  <modelVersion>4.0.0</modelVersion>

  <parent>
    <groupId>org.apache.maven</groupId>
    <artifactId>maven-api</artifactId>
    <version>4.0.0-beta-6-SNAPSHOT</version>
  </parent>

  <artifactId>maven-api-cli</artifactId>
  <name>Maven 4 API :: CLI</name>
  <description>Maven 4 API - CLI.</description>

  <dependencies>

        accessResult1.setLastModified(System.currentTimeMillis());
        accessResult1.setMethod("GET");
        accessResult1.setMimeType("text/plain");
        accessResult1.setParentUrl("http://www.parent.com/");
        accessResult1.setRuleId("htmlRule");
        accessResult1.setSessionId("id1");
        accessResult1.setStatus(200);
        accessResult1.setUrl("http://www.id1.com/");

                          </td>
            <td></td>
          </tr>
                  <tr>
            <td><a href="https://oss.sonatype.org/content/repositories/snapshots/org/codelibs/fess/fess-crawler-parent/">fess-crawler-parent/</a></td>
            <td>Mon Aug 12 06:08:50 UTC 2019</td>
            <td align="right">
                              &nbsp;
                          </td>
            <td></td>
          </tr>

  <modelVersion>4.0.0</modelVersion>
  <parent>
    <groupId>org.apache.maven</groupId>
    <artifactId>maven-api</artifactId>
    <version>4.0.0-beta-6-SNAPSHOT</version>
  </parent>

  <artifactId>maven-api-metadata</artifactId>

  <name>Maven 4 API :: Repository Metadata</name>