Package software.amazon.awscdk.services.ec2

Enum InstanceGeneration

java.lang.Object
java.lang.Enum<InstanceGeneration>
software.amazon.awscdk.services.ec2.InstanceGeneration
All Implemented Interfaces:
Serializable, Comparable<InstanceGeneration>, java.lang.constant.Constable
@Generated(value="jsii-pacmak/1.113.0 (build fc68b25)", date="2025-10-01T17:46:52.451Z") @Stability(Stable) public enum InstanceGeneration extends Enum<InstanceGeneration>
Instance generation categories for EC2.

Determines whether the instance type must belong to the latest (current) generation or to an older (previous) generation.

Example: 

 Role infrastructureRole;
 InstanceProfile instanceProfile;
 Vpc vpc;
 ManagedInstancesCapacityProvider miCapacityProvider = ManagedInstancesCapacityProvider.Builder.create(this, "MICapacityProvider")
         .infrastructureRole(infrastructureRole)
         .ec2InstanceProfile(instanceProfile)
         .subnets(vpc.getPrivateSubnets())
         .instanceRequirements(InstanceRequirementsConfig.builder()
                 // Required: CPU and memory constraints
                 .vCpuCountMin(2)
                 .vCpuCountMax(8)
                 .memoryMin(Size.gibibytes(4))
                 .memoryMax(Size.gibibytes(32))
                 // CPU preferences
                 .cpuManufacturers(List.of(CpuManufacturer.INTEL, CpuManufacturer.AMD))
                 .instanceGenerations(List.of(InstanceGeneration.CURRENT))
                 // Instance type filtering
                 .allowedInstanceTypes(List.of("m5.*", "c5.*"))
                 // Performance characteristics
                 .burstablePerformance(BurstablePerformance.EXCLUDED)
                 .bareMetal(BareMetal.EXCLUDED)
                 // Accelerator requirements (for ML/AI workloads)
                 .acceleratorTypes(List.of(AcceleratorType.GPU))
                 .acceleratorManufacturers(List.of(AcceleratorManufacturer.NVIDIA))
                 .acceleratorNames(List.of(AcceleratorName.T4, AcceleratorName.V100))
                 .acceleratorCountMin(1)
                 // Storage requirements
                 .localStorage(LocalStorage.REQUIRED)
                 .localStorageTypes(List.of(LocalStorageType.SSD))
                 .totalLocalStorageGBMin(100)
                 // Network requirements
                 .networkInterfaceCountMin(2)
                 .networkBandwidthGbpsMin(10)
                 // Cost optimization
                 .onDemandMaxPricePercentageOverLowestPrice(10)
                 .build())
         .build();

  • Enum Constant Details

    • CURRENT

      @Stability(Stable) public static final InstanceGeneration CURRENT
      Current generation instances (latest families).

    • PREVIOUS

      @Stability(Stable) public static final InstanceGeneration PREVIOUS
      Previous generation instances (older families).

  • Method Details

    • values

      public static InstanceGeneration[] 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 InstanceGeneration 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