user.Pets = append(user.Pets, &pet)
	CheckUser(t, user2, user)

	AssertAssociationCount(t, user, "Pets", 3, "AfterAppend")

	pets2 := []Pet{{Name: "pet-has-many-append-1-1"}, {Name: "pet-has-many-append-1-1"}}

	if err := DB.Model(&user2).Association("Pets").Append(&pets2); err != nil {
		t.Fatalf("Error happened when append pet, got %v", err)
	}

	for _, pet := range pets2 {
		pet := pet
		if pet.ID == 0 {

## Container Images

Docker has been one of the main tools to create and manage **container images** and **containers**.

And there's a public <a href="https://hub.docker.com/" class="external-link" target="_blank">Docker Hub</a> with pre-made **official container images** for many tools, environments, databases, and applications.

/**
 * Base class for services that can implement {@link #startUp}, {@link #run} and {@link #shutDown}
 * methods. This class uses a single thread to execute the service; consider {@link AbstractService}
 * if you would like to manage any threading manually.
 *
 * @author Jesse Wilson
 * @since 1.0
 */
@GwtIncompatible
@J2ktIncompatible
@ElementTypesAreNonnullByDefault
public abstract class AbstractExecutionThreadService implements Service {

There's also the chance that for some reason you have a **spike** of usage of your API. Maybe it went viral, or maybe some other services or bots start using it. And you might want to have extra resources to be safe in those cases.

    return freshness.get();
  }

  @SuppressWarnings("removal") // b/321209431 -- maybe just use valueOf here?
  @Generates
  Integer generateInteger() {
    return new Integer(generateInt());
  }

  @Generates
  long generateLong() {
    return generateInt();
  }

  @SuppressWarnings("removal") // b/321209431 -- maybe just use valueOf here?
  @Generates
  Long generateLongObject() {

iptables -t mangle -N ISTIO_PRERT
iptables -t nat -N ISTIO_OUTPUT
iptables -t mangle -N ISTIO_OUTPUT
iptables -t mangle -A PREROUTING -j ISTIO_PRERT
iptables -t mangle -A OUTPUT -j ISTIO_OUTPUT
iptables -t nat -A OUTPUT -j ISTIO_OUTPUT
iptables -t mangle -A ISTIO_PRERT -m mark --mark 0x539/0xfff -j CONNMARK --set-xmark 0x111/0xfff
iptables -t mangle -A ISTIO_PRERT -s e9ac:1e77:90ca:399f:4d6d:ece2:2f9b:3164 -p tcp -m tcp -j ACCEPT

You'll find many other useful documents on our [Wiki](https://github.com/istio/istio/wiki).

## Introduction

[Istio](https://istio.io/latest/docs/concepts/what-is-istio/) is an open platform for providing a uniform way to [integrate

iptables -t mangle -N ISTIO_PRERT
iptables -t nat -N ISTIO_OUTPUT
iptables -t mangle -N ISTIO_OUTPUT
iptables -t mangle -A PREROUTING -j ISTIO_PRERT
iptables -t mangle -A OUTPUT -j ISTIO_OUTPUT
iptables -t nat -A OUTPUT -j ISTIO_OUTPUT
iptables -t mangle -A ISTIO_PRERT -m mark --mark 0x539/0xfff -j CONNMARK --set-xmark 0x111/0xfff
iptables -t mangle -A ISTIO_PRERT -s 169.254.7.127 -p tcp -m tcp -j ACCEPT

  define for each {{{../maven-model/maven.html#class_dependency}dependency type}} information on the artifact
  (classifier, extension, language) and how to manage it as dependency (add to classpath, include dependencies).

  They are replaced in Maven 4 with Maven 4 API Core's {{{../api/maven-api-core/apidocs/org/apache/maven/api/Type.html}Dependency Types}},

	optionalDeleteCmds := [][]string{
		// flush-then-delete our created chains
		{"-t", iptablesconstants.MANGLE, "-F", ChainInpodPrerouting},
		{"-t", iptablesconstants.MANGLE, "-F", ChainInpodOutput},
		{"-t", iptablesconstants.NAT, "-F", ChainInpodOutput},
		{"-t", iptablesconstants.MANGLE, "-X", ChainInpodPrerouting},
		{"-t", iptablesconstants.MANGLE, "-X", ChainInpodOutput},
		{"-t", iptablesconstants.NAT, "-X", ChainInpodOutput},
	}