Represents the input of a CreateCacheCluster operation.

See: newCreateCacheCluster smart constructor.

Create a value of CreateCacheCluster with all optional fields omitted.

Use generic-lens or optics to modify other optional fields.

The following record fields are available, with the corresponding lenses provided for backwards compatibility:

$sel:engineVersion:CreateCacheCluster', createCacheCluster_engineVersion - The version number of the cache engine to be used for this cluster. To view the supported cache engine versions, use the DescribeCacheEngineVersions operation.

Important: You can upgrade to a newer engine version (see Selecting a Cache Engine and Version), but you cannot downgrade to an earlier engine version. If you want to use an earlier engine version, you must delete the existing cluster or replication group and create it anew with the earlier engine version.

$sel:cacheNodeType:CreateCacheCluster', createCacheCluster_cacheNodeType - The compute and memory capacity of the nodes in the node group (shard).

The following node types are supported by ElastiCache. Generally speaking, the current generation types provide more memory and computational power at lower cost when compared to their equivalent previous generation counterparts.

• General purpose:

  • Current generation:

    M6g node types (available only for Redis engine version 5.0.6 onward and for Memcached engine version 1.5.16 onward).

    cache.m6g.large, cache.m6g.xlarge, cache.m6g.2xlarge, cache.m6g.4xlarge, cache.m6g.8xlarge, cache.m6g.12xlarge, cache.m6g.16xlarge

    For region availability, see Supported Node Types

    M5 node types: cache.m5.large, cache.m5.xlarge, cache.m5.2xlarge, cache.m5.4xlarge, cache.m5.12xlarge, cache.m5.24xlarge

    M4 node types: cache.m4.large, cache.m4.xlarge, cache.m4.2xlarge, cache.m4.4xlarge, cache.m4.10xlarge

    T3 node types: cache.t3.micro, cache.t3.small, cache.t3.medium

    T2 node types: cache.t2.micro, cache.t2.small, cache.t2.medium

  • Previous generation: (not recommended)

    T1 node types: cache.t1.micro

    M1 node types: cache.m1.small, cache.m1.medium, cache.m1.large, cache.m1.xlarge

    M3 node types: cache.m3.medium, cache.m3.large, cache.m3.xlarge, cache.m3.2xlarge

• Compute optimized:

  • Previous generation: (not recommended)

    C1 node types: cache.c1.xlarge

• Memory optimized:

  • Current generation:

    R6g node types (available only for Redis engine version 5.0.6 onward and for Memcached engine version 1.5.16 onward).

    cache.r6g.large, cache.r6g.xlarge, cache.r6g.2xlarge, cache.r6g.4xlarge, cache.r6g.8xlarge, cache.r6g.12xlarge, cache.r6g.16xlarge

    For region availability, see Supported Node Types

    R5 node types: cache.r5.large, cache.r5.xlarge, cache.r5.2xlarge, cache.r5.4xlarge, cache.r5.12xlarge, cache.r5.24xlarge

    R4 node types: cache.r4.large, cache.r4.xlarge, cache.r4.2xlarge, cache.r4.4xlarge, cache.r4.8xlarge, cache.r4.16xlarge

  • Previous generation: (not recommended)

    M2 node types: cache.m2.xlarge, cache.m2.2xlarge, cache.m2.4xlarge

    R3 node types: cache.r3.large, cache.r3.xlarge, cache.r3.2xlarge, cache.r3.4xlarge, cache.r3.8xlarge

Additional node type info

• All current generation instance types are created in Amazon VPC by default.
• Redis append-only files (AOF) are not supported for T1 or T2 instances.
• Redis Multi-AZ with automatic failover is not supported on T1 instances.
• Redis configuration variables appendonly and appendfsync are not supported on Redis version 2.8.22 and later.

$sel:securityGroupIds:CreateCacheCluster', createCacheCluster_securityGroupIds - One or more VPC security groups associated with the cluster.

Use this parameter only when you are creating a cluster in an Amazon Virtual Private Cloud (Amazon VPC).

$sel:snapshotArns:CreateCacheCluster', createCacheCluster_snapshotArns - A single-element string list containing an Amazon Resource Name (ARN) that uniquely identifies a Redis RDB snapshot file stored in Amazon S3. The snapshot file is used to populate the node group (shard). The Amazon S3 object name in the ARN cannot contain any commas.

This parameter is only valid if the Engine parameter is redis.

Example of an Amazon S3 ARN: arn:aws:s3:::my_bucket/snapshot1.rdb

$sel:autoMinorVersionUpgrade:CreateCacheCluster', createCacheCluster_autoMinorVersionUpgrade - This parameter is currently disabled.

$sel:outpostMode:CreateCacheCluster', createCacheCluster_outpostMode - Specifies whether the nodes in the cluster are created in a single outpost or across multiple outposts.

$sel:cacheParameterGroupName:CreateCacheCluster', createCacheCluster_cacheParameterGroupName - The name of the parameter group to associate with this cluster. If this argument is omitted, the default parameter group for the specified engine is used. You cannot use any parameter group which has cluster-enabled='yes' when creating a cluster.

$sel:snapshotWindow:CreateCacheCluster', createCacheCluster_snapshotWindow - The daily time range (in UTC) during which ElastiCache begins taking a daily snapshot of your node group (shard).

Example: 05:00-09:00

If you do not specify this parameter, ElastiCache automatically chooses an appropriate time range.

This parameter is only valid if the Engine parameter is redis.

$sel:logDeliveryConfigurations:CreateCacheCluster', createCacheCluster_logDeliveryConfigurations - Specifies the destination, format and type of the logs.

$sel:authToken:CreateCacheCluster', createCacheCluster_authToken - Reserved parameter. The password used to access a password protected server.

Password constraints:

• Must be only printable ASCII characters.
• Must be at least 16 characters and no more than 128 characters in length.
• The only permitted printable special characters are !, &, #, $, ^, <, >, and -. Other printable special characters cannot be used in the AUTH token.

For more information, see AUTH password at http://redis.io/commands/AUTH.

$sel:engine:CreateCacheCluster', createCacheCluster_engine - The name of the cache engine to be used for this cluster.

Valid values for this parameter are: memcached | redis

$sel:preferredAvailabilityZones:CreateCacheCluster', createCacheCluster_preferredAvailabilityZones - A list of the Availability Zones in which cache nodes are created. The order of the zones in the list is not important.

This option is only supported on Memcached.

If you are creating your cluster in an Amazon VPC (recommended) you can only locate nodes in Availability Zones that are associated with the subnets in the selected subnet group.

The number of Availability Zones listed must equal the value of NumCacheNodes.

If you want all the nodes in the same Availability Zone, use PreferredAvailabilityZone instead, or repeat the Availability Zone multiple times in the list.

Default: System chosen Availability Zones.

$sel:preferredMaintenanceWindow:CreateCacheCluster', createCacheCluster_preferredMaintenanceWindow - Specifies the weekly time range during which maintenance on the cluster is performed. It is specified as a range in the format ddd:hh24:mi-ddd:hh24:mi (24H Clock UTC). The minimum maintenance window is a 60 minute period. Valid values for ddd are:

$sel:cacheSubnetGroupName:CreateCacheCluster', createCacheCluster_cacheSubnetGroupName - The name of the subnet group to be used for the cluster.

Use this parameter only when you are creating a cluster in an Amazon Virtual Private Cloud (Amazon VPC).

If you're going to launch your cluster in an Amazon VPC, you need to create a subnet group before you start creating a cluster. For more information, see Subnets and Subnet Groups.

$sel:preferredAvailabilityZone:CreateCacheCluster', createCacheCluster_preferredAvailabilityZone - The EC2 Availability Zone in which the cluster is created.

All nodes belonging to this cluster are placed in the preferred Availability Zone. If you want to create your nodes across multiple Availability Zones, use PreferredAvailabilityZones.

Default: System chosen Availability Zone.

$sel:snapshotRetentionLimit:CreateCacheCluster', createCacheCluster_snapshotRetentionLimit - The number of days for which ElastiCache retains automatic snapshots before deleting them. For example, if you set SnapshotRetentionLimit to 5, a snapshot taken today is retained for 5 days before being deleted.

This parameter is only valid if the Engine parameter is redis.

Default: 0 (i.e., automatic backups are disabled for this cache cluster).

$sel:preferredOutpostArns:CreateCacheCluster', createCacheCluster_preferredOutpostArns - The outpost ARNs in which the cache cluster is created.

$sel:aZMode:CreateCacheCluster', createCacheCluster_aZMode - Specifies whether the nodes in this Memcached cluster are created in a single Availability Zone or created across multiple Availability Zones in the cluster's region.

This parameter is only supported for Memcached clusters.

If the AZMode and PreferredAvailabilityZones are not specified, ElastiCache assumes single-az mode.

$sel:snapshotName:CreateCacheCluster', createCacheCluster_snapshotName - The name of a Redis snapshot from which to restore data into the new node group (shard). The snapshot status changes to restoring while the new node group (shard) is being created.

This parameter is only valid if the Engine parameter is redis.

$sel:preferredOutpostArn:CreateCacheCluster', createCacheCluster_preferredOutpostArn - The outpost ARN in which the cache cluster is created.

$sel:replicationGroupId:CreateCacheCluster', createCacheCluster_replicationGroupId - The ID of the replication group to which this cluster should belong. If this parameter is specified, the cluster is added to the specified replication group as a read replica; otherwise, the cluster is a standalone primary that is not part of any replication group.

If the specified replication group is Multi-AZ enabled and the Availability Zone is not specified, the cluster is created in Availability Zones that provide the best spread of read replicas across Availability Zones.

This parameter is only valid if the Engine parameter is redis.

$sel:notificationTopicArn:CreateCacheCluster', createCacheCluster_notificationTopicArn - The Amazon Resource Name (ARN) of the Amazon Simple Notification Service (SNS) topic to which notifications are sent.

The Amazon SNS topic owner must be the same as the cluster owner.

$sel:numCacheNodes:CreateCacheCluster', createCacheCluster_numCacheNodes - The initial number of cache nodes that the cluster has.

For clusters running Redis, this value must be 1. For clusters running Memcached, this value must be between 1 and 40.

If you need more than 40 nodes for your Memcached cluster, please fill out the ElastiCache Limit Increase Request form at http://aws.amazon.com/contact-us/elasticache-node-limit-request/.

$sel:tags:CreateCacheCluster', createCacheCluster_tags - A list of tags to be added to this resource.

$sel:port:CreateCacheCluster', createCacheCluster_port - The port number on which each of the cache nodes accepts connections.

$sel:cacheSecurityGroupNames:CreateCacheCluster', createCacheCluster_cacheSecurityGroupNames - A list of security group names to associate with this cluster.

Use this parameter only when you are creating a cluster outside of an Amazon Virtual Private Cloud (Amazon VPC).

$sel:cacheClusterId:CreateCacheCluster', createCacheCluster_cacheClusterId - The node group (shard) identifier. This parameter is stored as a lowercase string.

Constraints:

• A name must contain from 1 to 50 alphanumeric characters or hyphens.
• The first character must be a letter.
• A name cannot end with a hyphen or contain two consecutive hyphens.

The version number of the cache engine to be used for this cluster. To view the supported cache engine versions, use the DescribeCacheEngineVersions operation.

Important: You can upgrade to a newer engine version (see Selecting a Cache Engine and Version), but you cannot downgrade to an earlier engine version. If you want to use an earlier engine version, you must delete the existing cluster or replication group and create it anew with the earlier engine version.

The compute and memory capacity of the nodes in the node group (shard).

The following node types are supported by ElastiCache. Generally speaking, the current generation types provide more memory and computational power at lower cost when compared to their equivalent previous generation counterparts.

• General purpose:

  • Current generation:

    M6g node types (available only for Redis engine version 5.0.6 onward and for Memcached engine version 1.5.16 onward).

    cache.m6g.large, cache.m6g.xlarge, cache.m6g.2xlarge, cache.m6g.4xlarge, cache.m6g.8xlarge, cache.m6g.12xlarge, cache.m6g.16xlarge

    For region availability, see Supported Node Types

    M5 node types: cache.m5.large, cache.m5.xlarge, cache.m5.2xlarge, cache.m5.4xlarge, cache.m5.12xlarge, cache.m5.24xlarge

    M4 node types: cache.m4.large, cache.m4.xlarge, cache.m4.2xlarge, cache.m4.4xlarge, cache.m4.10xlarge

    T3 node types: cache.t3.micro, cache.t3.small, cache.t3.medium

    T2 node types: cache.t2.micro, cache.t2.small, cache.t2.medium

  • Previous generation: (not recommended)

    T1 node types: cache.t1.micro

    M1 node types: cache.m1.small, cache.m1.medium, cache.m1.large, cache.m1.xlarge

    M3 node types: cache.m3.medium, cache.m3.large, cache.m3.xlarge, cache.m3.2xlarge

• Compute optimized:

  • Previous generation: (not recommended)

    C1 node types: cache.c1.xlarge

• Memory optimized:

  • Current generation:

    R6g node types (available only for Redis engine version 5.0.6 onward and for Memcached engine version 1.5.16 onward).

    cache.r6g.large, cache.r6g.xlarge, cache.r6g.2xlarge, cache.r6g.4xlarge, cache.r6g.8xlarge, cache.r6g.12xlarge, cache.r6g.16xlarge

    For region availability, see Supported Node Types

    R5 node types: cache.r5.large, cache.r5.xlarge, cache.r5.2xlarge, cache.r5.4xlarge, cache.r5.12xlarge, cache.r5.24xlarge

    R4 node types: cache.r4.large, cache.r4.xlarge, cache.r4.2xlarge, cache.r4.4xlarge, cache.r4.8xlarge, cache.r4.16xlarge

  • Previous generation: (not recommended)

    M2 node types: cache.m2.xlarge, cache.m2.2xlarge, cache.m2.4xlarge

    R3 node types: cache.r3.large, cache.r3.xlarge, cache.r3.2xlarge, cache.r3.4xlarge, cache.r3.8xlarge

Additional node type info

• All current generation instance types are created in Amazon VPC by default.
• Redis append-only files (AOF) are not supported for T1 or T2 instances.
• Redis Multi-AZ with automatic failover is not supported on T1 instances.
• Redis configuration variables appendonly and appendfsync are not supported on Redis version 2.8.22 and later.

One or more VPC security groups associated with the cluster.

Use this parameter only when you are creating a cluster in an Amazon Virtual Private Cloud (Amazon VPC).

A single-element string list containing an Amazon Resource Name (ARN) that uniquely identifies a Redis RDB snapshot file stored in Amazon S3. The snapshot file is used to populate the node group (shard). The Amazon S3 object name in the ARN cannot contain any commas.

This parameter is only valid if the Engine parameter is redis.

Example of an Amazon S3 ARN: arn:aws:s3:::my_bucket/snapshot1.rdb

This parameter is currently disabled.

Specifies whether the nodes in the cluster are created in a single outpost or across multiple outposts.

The name of the parameter group to associate with this cluster. If this argument is omitted, the default parameter group for the specified engine is used. You cannot use any parameter group which has cluster-enabled='yes' when creating a cluster.

The daily time range (in UTC) during which ElastiCache begins taking a daily snapshot of your node group (shard).

Example: 05:00-09:00

If you do not specify this parameter, ElastiCache automatically chooses an appropriate time range.

This parameter is only valid if the Engine parameter is redis.

Specifies the destination, format and type of the logs.

Reserved parameter. The password used to access a password protected server.

Password constraints:

• Must be only printable ASCII characters.
• Must be at least 16 characters and no more than 128 characters in length.
• The only permitted printable special characters are !, &, #, $, ^, <, >, and -. Other printable special characters cannot be used in the AUTH token.

For more information, see AUTH password at http://redis.io/commands/AUTH.

The name of the cache engine to be used for this cluster.

Valid values for this parameter are: memcached | redis

A list of the Availability Zones in which cache nodes are created. The order of the zones in the list is not important.

This option is only supported on Memcached.

If you are creating your cluster in an Amazon VPC (recommended) you can only locate nodes in Availability Zones that are associated with the subnets in the selected subnet group.

The number of Availability Zones listed must equal the value of NumCacheNodes.

If you want all the nodes in the same Availability Zone, use PreferredAvailabilityZone instead, or repeat the Availability Zone multiple times in the list.

Default: System chosen Availability Zones.

Specifies the weekly time range during which maintenance on the cluster is performed. It is specified as a range in the format ddd:hh24:mi-ddd:hh24:mi (24H Clock UTC). The minimum maintenance window is a 60 minute period. Valid values for ddd are:

The name of the subnet group to be used for the cluster.

Use this parameter only when you are creating a cluster in an Amazon Virtual Private Cloud (Amazon VPC).

If you're going to launch your cluster in an Amazon VPC, you need to create a subnet group before you start creating a cluster. For more information, see Subnets and Subnet Groups.

The EC2 Availability Zone in which the cluster is created.

All nodes belonging to this cluster are placed in the preferred Availability Zone. If you want to create your nodes across multiple Availability Zones, use PreferredAvailabilityZones.

Default: System chosen Availability Zone.

The number of days for which ElastiCache retains automatic snapshots before deleting them. For example, if you set SnapshotRetentionLimit to 5, a snapshot taken today is retained for 5 days before being deleted.

This parameter is only valid if the Engine parameter is redis.

Default: 0 (i.e., automatic backups are disabled for this cache cluster).

The outpost ARNs in which the cache cluster is created.

Specifies whether the nodes in this Memcached cluster are created in a single Availability Zone or created across multiple Availability Zones in the cluster's region.

This parameter is only supported for Memcached clusters.

If the AZMode and PreferredAvailabilityZones are not specified, ElastiCache assumes single-az mode.

The name of a Redis snapshot from which to restore data into the new node group (shard). The snapshot status changes to restoring while the new node group (shard) is being created.

This parameter is only valid if the Engine parameter is redis.

The outpost ARN in which the cache cluster is created.

The ID of the replication group to which this cluster should belong. If this parameter is specified, the cluster is added to the specified replication group as a read replica; otherwise, the cluster is a standalone primary that is not part of any replication group.

If the specified replication group is Multi-AZ enabled and the Availability Zone is not specified, the cluster is created in Availability Zones that provide the best spread of read replicas across Availability Zones.

This parameter is only valid if the Engine parameter is redis.

The Amazon Resource Name (ARN) of the Amazon Simple Notification Service (SNS) topic to which notifications are sent.

The Amazon SNS topic owner must be the same as the cluster owner.

The initial number of cache nodes that the cluster has.

For clusters running Redis, this value must be 1. For clusters running Memcached, this value must be between 1 and 40.

If you need more than 40 nodes for your Memcached cluster, please fill out the ElastiCache Limit Increase Request form at http://aws.amazon.com/contact-us/elasticache-node-limit-request/.

A list of tags to be added to this resource.

The port number on which each of the cache nodes accepts connections.

A list of security group names to associate with this cluster.

Use this parameter only when you are creating a cluster outside of an Amazon Virtual Private Cloud (Amazon VPC).

The node group (shard) identifier. This parameter is stored as a lowercase string.

Constraints:

• A name must contain from 1 to 50 alphanumeric characters or hyphens.
• The first character must be a letter.
• A name cannot end with a hyphen or contain two consecutive hyphens.

See: newCreateCacheClusterResponse smart constructor.

Create a value of CreateCacheClusterResponse with all optional fields omitted.

Use generic-lens or optics to modify other optional fields.

The following record fields are available, with the corresponding lenses provided for backwards compatibility:

$sel:cacheCluster:CreateCacheClusterResponse', createCacheClusterResponse_cacheCluster - Undocumented member.

$sel:httpStatus:CreateCacheClusterResponse', createCacheClusterResponse_httpStatus - The response's http status code.

Undocumented member.

The response's http status code.