Package software.amazon.awscdk.services.ec2

Enum PlacementGroupStrategy

java.lang.Object

java.lang.Enum<PlacementGroupStrategy>

software.amazon.awscdk.services.ec2.PlacementGroupStrategy

All Implemented Interfaces:

Serializable, Comparable<PlacementGroupStrategy>, java.lang.constant.Constable

@Generated(value="jsii-pacmak/1.104.0 (build e79254c)",
           date="2024-12-17T21:37:30.146Z")
@Stability(Stable)
public enum PlacementGroupStrategy
extends Enum<PlacementGroupStrategy>

Which strategy to use when launching instances.

Example:

 InstanceType instanceType;
 PlacementGroup pg = PlacementGroup.Builder.create(this, "test-pg")
         .strategy(PlacementGroupStrategy.SPREAD)
         .build();
 Instance.Builder.create(this, "Instance")
         .vpc(vpc)
         .instanceType(instanceType)
         .machineImage(MachineImage.latestAmazonLinux2023())
         .placementGroup(pg)
         .build();
 

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Enum

Enum.EnumDesc<E extends Enum<E>>

Enum Constant Summary

Enum Constants

Enum Constant	Description
CLUSTER	Packs instances close together inside an Availability Zone.
PARTITION	Spreads your instances across logical partitions such that groups of instances in one partition do not share the underlying hardware with groups of instances in different partitions.
SPREAD	Strictly places a small group of instances across distinct underlying hardware to reduce correlated failures.

Method Summary

Modifier and Type	Method	Description
static PlacementGroupStrategy	valueOf(String name)	Returns the enum constant of this type with the specified name.
static PlacementGroupStrategy[]	values()	Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, describeConstable, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

CLUSTER

@Stability(Stable)
public static final PlacementGroupStrategy CLUSTER

Packs instances close together inside an Availability Zone.

This strategy enables workloads to achieve the low-latency network performance necessary for tightly-coupled node-to-node communication that is typical of high-performance computing (HPC) applications.

PARTITION

@Stability(Stable)
public static final PlacementGroupStrategy PARTITION

Spreads your instances across logical partitions such that groups of instances in one partition do not share the underlying hardware with groups of instances in different partitions.

This strategy is typically used by large distributed and replicated workloads, such as Hadoop, Cassandra, and Kafka.

SPREAD

@Stability(Stable)
public static final PlacementGroupStrategy SPREAD

Strictly places a small group of instances across distinct underlying hardware to reduce correlated failures.

Method Details

values

public static PlacementGroupStrategy[] values()

Returns an array containing the constants of this enum type, in the order they are declared.

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static PlacementGroupStrategy valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null