Amazon ElastiCache

boto.elasticache

boto.elasticache.connect_to_region(region_name, **kw_params)

boto.elasticache.regions()

Get all available regions for the AWS ElastiCache service.

Return type:list Returns:A list of boto.regioninfo.RegionInfo

boto.elasticache.layer1

class boto.elasticache.layer1.ElastiCacheConnection(**kwargs)

Amazon ElastiCache Amazon ElastiCache is a web service that makes it easier to set up, operate, and scale a distributed cache in the cloud.

With ElastiCache, customers gain all of the benefits of a high- performance, in-memory cache with far less of the administrative burden of launching and managing a distributed cache. The service makes set-up, scaling, and cluster failure handling much simpler than in a self-managed cache deployment.

In addition, through integration with Amazon CloudWatch, customers get enhanced visibility into the key performance statistics associated with their cache and can receive alarms if a part of their cache runs hot.

APIVersion = '2013-06-15'

DefaultRegionEndpoint = 'elasticache.us-east-1.amazonaws.com'

DefaultRegionName = 'us-east-1'

authorize_cache_security_group_ingress(cache_security_group_name, ec2_security_group_name, ec2_security_group_owner_id)

The AuthorizeCacheSecurityGroupIngress operation allows network ingress to a cache security group. Applications using ElastiCache must be running on Amazon EC2, and Amazon EC2 security groups are used as the authorization mechanism. You cannot authorize ingress from an Amazon EC2 security group in one Region to an ElastiCache cluster in another Region.

Parameters:

• cache_security_group_name (string) – The cache security group which will allow network ingress.
• ec2_security_group_name (string) – The Amazon EC2 security group to be authorized for ingress to the cache security group.
• ec2_security_group_owner_id (string) – The AWS account number of the Amazon EC2 security group owner. Note that this is not the same thing as an AWS access key ID - you must provide a valid AWS account number for this parameter.

create_cache_cluster(cache_cluster_id, num_cache_nodes=None, cache_node_type=None, engine=None, replication_group_id=None, engine_version=None, cache_parameter_group_name=None, cache_subnet_group_name=None, cache_security_group_names=None, security_group_ids=None, snapshot_arns=None, preferred_availability_zone=None, preferred_maintenance_window=None, port=None, notification_topic_arn=None, auto_minor_version_upgrade=None)

The CreateCacheCluster operation creates a new cache cluster. All nodes in the cache cluster run the same protocol-compliant cache engine software - either Memcached or Redis.

Parameters:cache_cluster_id (string) –

The cache cluster identifier. This parameter is stored as a lowercase

string.

Constraints:

• Must contain from 1 to 20 alphanumeric characters or hyphens.
• First character must be a letter.
• Cannot end with a hyphen or contain two consecutive hyphens.

Parameters:

• replication_group_id (string) – The replication group to which this cache cluster should belong. If this parameter is specified, the cache cluster will be added to the specified replication group as a read replica; otherwise, the cache cluster will be a standalone primary that is not part of any replication group.
• num_cache_nodes (integer) – The initial number of cache nodes that the cache cluster will have.

For a Memcached cluster, valid values are between 1 and 20. If you need

to exceed this limit, please fill out the ElastiCache Limit Increase Request form at ``_ .

For Redis, only single-node cache clusters are supported at this time,

so the value for this parameter must be 1.

Parameters:cache_node_type (string) – The compute and memory capacity of the nodes in the cache cluster.

Valid values for Memcached:

cache.t1.micro | cache.m1.small | cache.m1.medium |

cache.m1.large | cache.m1.xlarge | cache.m3.xlarge | cache.m3.2xlarge | cache.m2.xlarge | cache.m2.2xlarge | cache.m2.4xlarge | cache.c1.xlarge

Valid values for Redis:

cache.t1.micro | cache.m1.small | cache.m1.medium |

cache.m1.large | cache.m1.xlarge | cache.m2.xlarge | cache.m2.2xlarge | cache.m2.4xlarge | cache.c1.xlarge

For a complete listing of cache node types and specifications, see `.

Parameters:engine (string) – The name of the cache engine to be used for this cache cluster.

Valid values for this parameter are:

memcached | redis

Parameters:

• engine_version (string) – The version number of the cache engine to be used for this cluster. To view the supported cache engine versions, use the DescribeCacheEngineVersions operation.
• cache_parameter_group_name (string) – The name of the cache parameter group to associate with this cache cluster. If this argument is omitted, the default cache parameter group for the specified engine will be used.
• cache_subnet_group_name (string) – The name of the cache subnet group to be used for the cache cluster.

Use this parameter only when you are creating a cluster in an Amazon

Virtual Private Cloud (VPC).

Parameters:cache_security_group_names (list) – A list of cache security group names to associate with this cache cluster.

Use this parameter only when you are creating a cluster outside of an

Amazon Virtual Private Cloud (VPC).

Parameters:security_group_ids (list) – One or more VPC security groups associated with the cache cluster.

Use this parameter only when you are creating a cluster in an Amazon

Virtual Private Cloud (VPC).

Parameters:snapshot_arns (list) – 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 will be used to populate the Redis cache in the new cache cluster. The Amazon S3 object name in the ARN cannot contain any commas.

Here is an example of an Amazon S3 ARN:

arn:aws:s3:::my_bucket/snapshot1.rdb

Note: This parameter is only valid if the Engine parameter is

redis.

Parameters:preferred_availability_zone (string) – The EC2 Availability Zone in which the cache cluster will be created.

All cache nodes belonging to a cache cluster are placed in the

preferred availability zone.

Default: System chosen availability zone.

Parameters:preferred_maintenance_window (string) – The weekly time range (in UTC) during which system maintenance can occur.

Example: sun:05:00-sun:09:00

Parameters:

• port (integer) – The port number on which each of the cache nodes will accept connections.
• notification_topic_arn (string) –

The Amazon Resource Name (ARN) of the Amazon Simple Notification

Service (SNS) topic to which notifications will be sent.

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

Parameters:auto_minor_version_upgrade (boolean) – Determines whether minor engine upgrades will be applied automatically to the cache cluster during the maintenance window. A value of True allows these upgrades to occur; False disables automatic upgrades.

Default: True

create_cache_parameter_group(cache_parameter_group_name, cache_parameter_group_family, description)

The CreateCacheParameterGroup operation creates a new cache parameter group. A cache parameter group is a collection of parameters that you apply to all of the nodes in a cache cluster.

Parameters:

• cache_parameter_group_name (string) – A user-specified name for the cache parameter group.
• cache_parameter_group_family (string) – The name of the cache parameter group family the cache parameter group can be used with.

Valid values are: memcached1.4 | redis2.6

Parameters:description (string) – A user-specified description for the cache parameter group.

create_cache_security_group(cache_security_group_name, description)

The CreateCacheSecurityGroup operation creates a new cache security group. Use a cache security group to control access to one or more cache clusters.

Cache security groups are only used when you are creating a cluster outside of an Amazon Virtual Private Cloud (VPC). If you are creating a cluster inside of a VPC, use a cache subnet group instead. For more information, see CreateCacheSubnetGroup .

Parameters:cache_security_group_name (string) – A name for the cache security group. This value is stored as a lowercase string.

Constraints: Must contain no more than 255 alphanumeric characters.

Must not be the word “Default”.

Example: mysecuritygroup

Parameters:description (string) – A description for the cache security group.

create_cache_subnet_group(cache_subnet_group_name, cache_subnet_group_description, subnet_ids)

The CreateCacheSubnetGroup operation creates a new cache subnet group.

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

Parameters:cache_subnet_group_name (string) – A name for the cache subnet group. This value is stored as a lowercase string.

Constraints: Must contain no more than 255 alphanumeric characters or

hyphens.

Example: mysubnetgroup

Parameters:

• cache_subnet_group_description (string) – A description for the cache subnet group.
• subnet_ids (list) – A list of VPC subnet IDs for the cache subnet group.

create_replication_group(replication_group_id, primary_cluster_id, replication_group_description)

The CreateReplicationGroup operation creates a replication group. A replication group is a collection of cache clusters, where one of the clusters is a read/write primary and the other clusters are read-only replicas. Writes to the primary are automatically propagated to the replicas.

When you create a replication group, you must specify an existing cache cluster that is in the primary role. When the replication group has been successfully created, you can add one or more read replica replicas to it, up to a total of five read replicas.

Parameters:replication_group_id (string) –

The replication group identifier. This parameter is stored as a

lowercase string.

Constraints:

• Must contain from 1 to 20 alphanumeric characters or hyphens.
• First character must be a letter.
• Cannot end with a hyphen or contain two consecutive hyphens.

Parameters:

• primary_cluster_id (string) – The identifier of the cache cluster that will serve as the primary for this replication group. This cache cluster must already exist and have a status of available .
• replication_group_description (string) – A user-specified description for the replication group.

delete_cache_cluster(cache_cluster_id)

The DeleteCacheCluster operation deletes a previously provisioned cache cluster. DeleteCacheCluster deletes all associated cache nodes, node endpoints and the cache cluster itself. When you receive a successful response from this operation, Amazon ElastiCache immediately begins deleting the cache cluster; you cannot cancel or revert this operation.

Parameters:cache_cluster_id (string) – The cache cluster identifier for the cluster to be deleted. This parameter is not case sensitive.

delete_cache_parameter_group(cache_parameter_group_name)

The DeleteCacheParameterGroup operation deletes the specified cache parameter group. You cannot delete a cache parameter group if it is associated with any cache clusters.

Parameters:cache_parameter_group_name (string) –

The name of the cache parameter group to delete.

The specified cache security group must not be associated with any

cache clusters.

delete_cache_security_group(cache_security_group_name)

The DeleteCacheSecurityGroup operation deletes a cache security group. You cannot delete a cache security group if it is associated with any cache clusters.

Parameters:cache_security_group_name (string) –

The name of the cache security group to delete.

You cannot delete the default security group.

delete_cache_subnet_group(cache_subnet_group_name)

The DeleteCacheSubnetGroup operation deletes a cache subnet group. You cannot delete a cache subnet group if it is associated with any cache clusters.

Parameters:cache_subnet_group_name (string) – The name of the cache subnet group to delete.

Constraints: Must contain no more than 255 alphanumeric characters or

hyphens.

delete_replication_group(replication_group_id)

The DeleteReplicationGroup operation deletes an existing replication group. DeleteReplicationGroup deletes the primary cache cluster and all of the read replicas in the replication group. When you receive a successful response from this operation, Amazon ElastiCache immediately begins deleting the entire replication group; you cannot cancel or revert this operation.

Parameters:replication_group_id (string) – The identifier for the replication group to be deleted. This parameter is not case sensitive.

describe_cache_clusters(cache_cluster_id=None, max_records=None, marker=None, show_cache_node_info=None)

The DescribeCacheClusters operation returns information about all provisioned cache clusters if no cache cluster identifier is specified, or about a specific cache cluster if a cache cluster identifier is supplied.

By default, abbreviated information about the cache clusters(s) will be returned. You can use the optional ShowDetails flag to retrieve detailed information about the cache nodes associated with the cache clusters. These details include the DNS address and port for the cache node endpoint.

If the cluster is in the CREATING state, only cluster level information will be displayed until all of the nodes are successfully provisioned.

If the cluster is in the DELETING state, only cluster level information will be displayed.

If cache nodes are currently being added to the cache cluster, node endpoint information and creation time for the additional nodes will not be displayed until they are completely provisioned. When the cache cluster state is available , the cluster is ready for use.

If cache nodes are currently being removed from the cache cluster, no endpoint information for the removed nodes is displayed.

Parameters:

• cache_cluster_id (string) – The user-supplied cluster identifier. If this parameter is specified, only information about that specific cache cluster is returned. This parameter isn’t case sensitive.
• max_records (integer) – The maximum number of records to include in the response. If more records exist than the specified MaxRecords value, a marker is included in the response so that the remaining results can be retrieved.

Default: 100

Constraints: minimum 20; maximum 100.

Parameters:

• marker (string) – An optional marker returned from a prior request. Use this marker for pagination of results from this operation. If this parameter is specified, the response includes only records beyond the marker, up to the value specified by MaxRecords .
• show_cache_node_info (boolean) – An optional flag that can be included in the DescribeCacheCluster request to retrieve information about the individual cache nodes.

describe_cache_engine_versions(engine=None, engine_version=None, cache_parameter_group_family=None, max_records=None, marker=None, default_only=None)

The DescribeCacheEngineVersions operation returns a list of the available cache engines and their versions.

Parameters:

• engine (string) – The cache engine to return. Valid values: memcached | redis
• engine_version (string) – The cache engine version to return.

Example: 1.4.14

Parameters:cache_parameter_group_family (string) –

The name of a specific cache parameter group family to return details

for.

Constraints:

• Must be 1 to 255 alphanumeric characters
• First character must be a letter
• Cannot end with a hyphen or contain two consecutive hyphens

Parameters:max_records (integer) – The maximum number of records to include in the response. If more records exist than the specified MaxRecords value, a marker is included in the response so that the remaining results can be retrieved.

Default: 100

Constraints: minimum 20; maximum 100.

Parameters:

• marker (string) – An optional marker returned from a prior request. Use this marker for pagination of results from this operation. If this parameter is specified, the response includes only records beyond the marker, up to the value specified by MaxRecords .
• default_only (boolean) – If true , specifies that only the default version of the specified engine or engine and major version combination is to be returned.

describe_cache_parameter_groups(cache_parameter_group_name=None, max_records=None, marker=None)

The DescribeCacheParameterGroups operation returns a list of cache parameter group descriptions. If a cache parameter group name is specified, the list will contain only the descriptions for that group.

Parameters:

• cache_parameter_group_name (string) – The name of a specific cache parameter group to return details for.
• max_records (integer) – The maximum number of records to include in the response. If more records exist than the specified MaxRecords value, a marker is included in the response so that the remaining results can be retrieved.

Default: 100

Constraints: minimum 20; maximum 100.

Parameters:marker (string) – An optional marker returned from a prior request. Use this marker for pagination of results from this operation. If this parameter is specified, the response includes only records beyond the marker, up to the value specified by MaxRecords .

describe_cache_parameters(cache_parameter_group_name, source=None, max_records=None, marker=None)

The DescribeCacheParameters operation returns the detailed parameter list for a particular cache parameter group.

Parameters:

• cache_parameter_group_name (string) – The name of a specific cache parameter group to return details for.
• source (string) – The parameter types to return.

Valid values: user | system | engine-default

Parameters:max_records (integer) – The maximum number of records to include in the response. If more records exist than the specified MaxRecords value, a marker is included in the response so that the remaining results can be retrieved.

Default: 100

Constraints: minimum 20; maximum 100.

Parameters:marker (string) – An optional marker returned from a prior request. Use this marker for pagination of results from this operation. If this parameter is specified, the response includes only records beyond the marker, up to the value specified by MaxRecords .

describe_cache_security_groups(cache_security_group_name=None, max_records=None, marker=None)

The DescribeCacheSecurityGroups operation returns a list of cache security group descriptions. If a cache security group name is specified, the list will contain only the description of that group.

Parameters:

• cache_security_group_name (string) – The name of the cache security group to return details for.
• max_records (integer) – The maximum number of records to include in the response. If more records exist than the specified MaxRecords value, a marker is included in the response so that the remaining results can be retrieved.

Default: 100

Constraints: minimum 20; maximum 100.

Parameters:marker (string) – An optional marker returned from a prior request. Use this marker for pagination of results from this operation. If this parameter is specified, the response includes only records beyond the marker, up to the value specified by MaxRecords .

describe_cache_subnet_groups(cache_subnet_group_name=None, max_records=None, marker=None)

The DescribeCacheSubnetGroups operation returns a list of cache subnet group descriptions. If a subnet group name is specified, the list will contain only the description of that group.

Parameters:

• cache_subnet_group_name (string) – The name of the cache subnet group to return details for.
• max_records (integer) – The maximum number of records to include in the response. If more records exist than the specified MaxRecords value, a marker is included in the response so that the remaining results can be retrieved.

Default: 100

Constraints: minimum 20; maximum 100.

Parameters:marker (string) – An optional marker returned from a prior request. Use this marker for pagination of results from this operation. If this parameter is specified, the response includes only records beyond the marker, up to the value specified by MaxRecords .

describe_engine_default_parameters(cache_parameter_group_family, max_records=None, marker=None)

The DescribeEngineDefaultParameters operation returns the default engine and system parameter information for the specified cache engine.

Parameters:

• cache_parameter_group_family (string) – The name of the cache parameter group family. Valid values are: memcached1.4 | redis2.6
• max_records (integer) – The maximum number of records to include in the response. If more records exist than the specified MaxRecords value, a marker is included in the response so that the remaining results can be retrieved.

Default: 100

Constraints: minimum 20; maximum 100.

Parameters:marker (string) – An optional marker returned from a prior request. Use this marker for pagination of results from this operation. If this parameter is specified, the response includes only records beyond the marker, up to the value specified by MaxRecords .

describe_events(source_identifier=None, source_type=None, start_time=None, end_time=None, duration=None, max_records=None, marker=None)

The DescribeEvents operation returns events related to cache clusters, cache security groups, and cache parameter groups. You can obtain events specific to a particular cache cluster, cache security group, or cache parameter group by providing the name as a parameter.

By default, only the events occurring within the last hour are returned; however, you can retrieve up to 14 days’ worth of events if necessary.

Parameters:

• source_identifier (string) – The identifier of the event source for which events will be returned. If not specified, then all sources are included in the response.
• source_type (string) – The event source to retrieve events for. If no value is specified, all events are returned.

Valid values are: cache-cluster | cache-parameter-group | `cache-

security-group` | cache-subnet-group

Parameters:

• start_time (timestamp) – The beginning of the time interval to retrieve events for, specified in ISO 8601 format.
• end_time (timestamp) – The end of the time interval for which to retrieve events, specified in ISO 8601 format.
• duration (integer) – The number of minutes’ worth of events to retrieve.
• max_records (integer) – The maximum number of records to include in the response. If more records exist than the specified MaxRecords value, a marker is included in the response so that the remaining results can be retrieved.

Default: 100

Constraints: minimum 20; maximum 100.

Parameters:marker (string) – An optional marker returned from a prior request. Use this marker for pagination of results from this operation. If this parameter is specified, the response includes only records beyond the marker, up to the value specified by MaxRecords .

describe_replication_groups(replication_group_id=None, max_records=None, marker=None)

The DescribeReplicationGroups operation returns information about a particular replication group. If no identifier is specified, DescribeReplicationGroups returns information about all replication groups.

Parameters:replication_group_id (string) – The identifier for the replication group to be described. This parameter is not case sensitive.

If you do not specify this parameter, information about all replication

groups is returned.

Parameters:max_records (integer) – The maximum number of records to include in the response. If more records exist than the specified MaxRecords value, a marker is included in the response so that the remaining results can be retrieved.

Default: 100

Constraints: minimum 20; maximum 100.

Parameters:marker (string) – An optional marker returned from a prior request. Use this marker for pagination of results from this operation. If this parameter is specified, the response includes only records beyond the marker, up to the value specified by MaxRecords .

describe_reserved_cache_nodes(reserved_cache_node_id=None, reserved_cache_nodes_offering_id=None, cache_node_type=None, duration=None, product_description=None, offering_type=None, max_records=None, marker=None)

The DescribeReservedCacheNodes operation returns information about reserved cache nodes for this account, or about a specified reserved cache node.

Parameters:

• reserved_cache_node_id (string) – The reserved cache node identifier filter value. Use this parameter to show only the reservation that matches the specified reservation ID.
• reserved_cache_nodes_offering_id (string) – The offering identifier filter value. Use this parameter to show only purchased reservations matching the specified offering identifier.
• cache_node_type (string) – The cache node type filter value. Use this parameter to show only those reservations matching the specified cache node type.
• duration (string) – The duration filter value, specified in years or seconds. Use this parameter to show only reservations for this duration.

Valid Values: 1 | 3 | 31536000 | 94608000

Parameters:

• product_description (string) – The product description filter value. Use this parameter to show only those reservations matching the specified product description.
• offering_type (string) – The offering type filter value. Use this parameter to show only the available offerings matching the specified offering type.

Valid values: `“Light Utilization” | “Medium Utilization” | “Heavy

Utilization” `

Parameters:max_records (integer) – The maximum number of records to include in the response. If more records exist than the specified MaxRecords value, a marker is included in the response so that the remaining results can be retrieved.

Default: 100

Constraints: minimum 20; maximum 100.

Parameters:marker (string) – An optional marker returned from a prior request. Use this marker for pagination of results from this operation. If this parameter is specified, the response includes only records beyond the marker, up to the value specified by MaxRecords .

describe_reserved_cache_nodes_offerings(reserved_cache_nodes_offering_id=None, cache_node_type=None, duration=None, product_description=None, offering_type=None, max_records=None, marker=None)

The DescribeReservedCacheNodesOfferings operation lists available reserved cache node offerings.

Parameters:reserved_cache_nodes_offering_id (string) – The offering identifier filter value. Use this parameter to show only the available offering that matches the specified reservation identifier.

Example: 438012d3-4052-4cc7-b2e3-8d3372e0e706

Parameters:

• cache_node_type (string) – The cache node type filter value. Use this parameter to show only the available offerings matching the specified cache node type.
• duration (string) – Duration filter value, specified in years or seconds. Use this parameter to show only reservations for a given duration.

Valid Values: 1 | 3 | 31536000 | 94608000

Parameters:

• product_description (string) – The product description filter value. Use this parameter to show only the available offerings matching the specified product description.
• offering_type (string) – The offering type filter value. Use this parameter to show only the available offerings matching the specified offering type.

Valid Values: `“Light Utilization” | “Medium Utilization” | “Heavy

Utilization” `

Parameters:max_records (integer) – The maximum number of records to include in the response. If more records exist than the specified MaxRecords value, a marker is included in the response so that the remaining results can be retrieved.

Default: 100

Constraints: minimum 20; maximum 100.

Parameters:marker (string) – An optional marker returned from a prior request. Use this marker for pagination of results from this operation. If this parameter is specified, the response includes only records beyond the marker, up to the value specified by MaxRecords .

modify_cache_cluster(cache_cluster_id, num_cache_nodes=None, cache_node_ids_to_remove=None, cache_security_group_names=None, security_group_ids=None, preferred_maintenance_window=None, notification_topic_arn=None, cache_parameter_group_name=None, notification_topic_status=None, apply_immediately=None, engine_version=None, auto_minor_version_upgrade=None)

The ModifyCacheCluster operation modifies the settings for a cache cluster. You can use this operation to change one or more cluster configuration parameters by specifying the parameters and the new values.

Parameters:

• cache_cluster_id (string) – The cache cluster identifier. This value is stored as a lowercase string.
• num_cache_nodes (integer) – The number of cache nodes that the cache cluster should have. If the value for NumCacheNodes is greater than the existing number of cache nodes, then more nodes will be added. If the value is less than the existing number of cache nodes, then cache nodes will be removed.

If you are removing cache nodes, you must use the CacheNodeIdsToRemove

parameter to provide the IDs of the specific cache nodes to be removed.

Parameters:

• cache_node_ids_to_remove (list) – A list of cache node IDs to be removed. A node ID is a numeric identifier (0001, 0002, etc.). This parameter is only valid when NumCacheNodes is less than the existing number of cache nodes. The number of cache node IDs supplied in this parameter must match the difference between the existing number of cache nodes in the cluster and the value of NumCacheNodes in the request.
• cache_security_group_names (list) – A list of cache security group names to authorize on this cache cluster. This change is asynchronously applied as soon as possible.

This parameter can be used only with clusters that are created outside

of an Amazon Virtual Private Cloud (VPC).

Constraints: Must contain no more than 255 alphanumeric characters.

Must not be “Default”.

Parameters:security_group_ids (list) – Specifies the VPC Security Groups associated with the cache cluster.

This parameter can be used only with clusters that are created in an

Amazon Virtual Private Cloud (VPC).

Parameters:

• preferred_maintenance_window (string) – The weekly time range (in UTC) during which system maintenance can occur. Note that system maintenance may result in an outage. This change is made immediately. If you are moving this window to the current time, there must be at least 120 minutes between the current time and end of the window to ensure that pending changes are applied.
• notification_topic_arn (string) –

The Amazon Resource Name (ARN) of the SNS topic to which notifications

will be sent.

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

Parameters:

• cache_parameter_group_name (string) – The name of the cache parameter group to apply to this cache cluster. This change is asynchronously applied as soon as possible for parameters when the ApplyImmediately parameter is specified as true for this request.
• notification_topic_status (string) – The status of the Amazon SNS notification topic. Notifications are sent only if the status is active .

Valid values: active | inactive

Parameters:apply_immediately (boolean) – If True, this parameter causes the modifications in this request and any pending modifications to be applied, asynchronously and as soon as possible, regardless of the PreferredMaintenanceWindow setting for the cache cluster.

If False, then changes to the cache cluster are applied on the next

maintenance reboot, or the next failure reboot, whichever occurs first.

Valid values: True | False

Default: False

Parameters:

• engine_version (string) – The upgraded version of the cache engine to be run on the cache cluster nodes.
• auto_minor_version_upgrade (boolean) – If True, then minor engine upgrades will be applied automatically to the cache cluster during the maintenance window.

Valid values: True | False

Default: True

modify_cache_parameter_group(cache_parameter_group_name, parameter_name_values)

The ModifyCacheParameterGroup operation modifies the parameters of a cache parameter group. You can modify up to 20 parameters in a single request by submitting a list parameter name and value pairs.

Parameters:

• cache_parameter_group_name (string) – The name of the cache parameter group to modify.
• parameter_name_values (list) – An array of parameter names and values for the parameter update. You must supply at least one parameter name and value; subsequent arguments are optional. A maximum of 20 parameters may be modified per request.

modify_cache_subnet_group(cache_subnet_group_name, cache_subnet_group_description=None, subnet_ids=None)

The ModifyCacheSubnetGroup operation modifies an existing cache subnet group.

Parameters:cache_subnet_group_name (string) – The name for the cache subnet group. This value is stored as a lowercase string.

Constraints: Must contain no more than 255 alphanumeric characters or

hyphens.

Example: mysubnetgroup

Parameters:

• cache_subnet_group_description (string) – A description for the cache subnet group.
• subnet_ids (list) – The EC2 subnet IDs for the cache subnet group.

modify_replication_group(replication_group_id, replication_group_description=None, cache_security_group_names=None, security_group_ids=None, preferred_maintenance_window=None, notification_topic_arn=None, cache_parameter_group_name=None, notification_topic_status=None, apply_immediately=None, engine_version=None, auto_minor_version_upgrade=None, primary_cluster_id=None)

The ModifyReplicationGroup operation modifies the settings for a replication group.

Parameters:

• replication_group_id (string) – The identifier of the replication group to modify.
• replication_group_description (string) – A description for the replication group. Maximum length is 255 characters.
• cache_security_group_names (list) – A list of cache security group names to authorize for the clusters in this replication group. This change is asynchronously applied as soon as possible.

This parameter can be used only with replication groups containing

cache clusters running outside of an Amazon Virtual Private Cloud (VPC).

Constraints: Must contain no more than 255 alphanumeric characters.

Must not be “Default”.

Parameters:security_group_ids (list) – Specifies the VPC Security Groups associated with the cache clusters in the replication group.

This parameter can be used only with replication groups containing

cache clusters running in an Amazon Virtual Private Cloud (VPC).

Parameters:

• preferred_maintenance_window (string) – The weekly time range (in UTC) during which replication group system maintenance can occur. Note that system maintenance may result in an outage. This change is made immediately. If you are moving this window to the current time, there must be at least 120 minutes between the current time and end of the window to ensure that pending changes are applied.
• notification_topic_arn (string) –

The Amazon Resource Name (ARN) of the SNS topic to which notifications

will be sent.

The SNS topic owner must be same as the replication group owner.

Parameters:

• cache_parameter_group_name (string) – The name of the cache parameter group to apply to all of the cache nodes in this replication group. This change is asynchronously applied as soon as possible for parameters when the ApplyImmediately parameter is specified as true for this request.
• notification_topic_status (string) – The status of the Amazon SNS notification topic for the replication group. Notifications are sent only if the status is active .

Valid values: active | inactive

Parameters:apply_immediately (boolean) – If True, this parameter causes the modifications in this request and any pending modifications to be applied, asynchronously and as soon as possible, regardless of the PreferredMaintenanceWindow setting for the replication group.

If False, then changes to the nodes in the replication group are

applied on the next maintenance reboot, or the next failure reboot, whichever occurs first.

Valid values: True | False

Default: False

Parameters:

• engine_version (string) – The upgraded version of the cache engine to be run on the nodes in the replication group..
• auto_minor_version_upgrade (boolean) – Determines whether minor engine upgrades will be applied automatically to all of the cache nodes in the replication group during the maintenance window. A value of True allows these upgrades to occur; False disables automatic upgrades.
• primary_cluster_id (string) – If this parameter is specified, ElastiCache will promote each of the nodes in the specified cache cluster to the primary role. The nodes of all other clusters in the replication group will be read replicas.

purchase_reserved_cache_nodes_offering(reserved_cache_nodes_offering_id, reserved_cache_node_id=None, cache_node_count=None)

The PurchaseReservedCacheNodesOffering operation allows you to purchase a reserved cache node offering.

Parameters:reserved_cache_nodes_offering_id (string) – The ID of the reserved cache node offering to purchase.

Example: 438012d3-4052-4cc7-b2e3-8d3372e0e706

Parameters:reserved_cache_node_id (string) – A customer-specified identifier to track this reservation.

Example: myreservationID

Parameters:cache_node_count (integer) – The number of cache node instances to reserve.

Default: 1

reboot_cache_cluster(cache_cluster_id, cache_node_ids_to_reboot)

The RebootCacheCluster operation reboots some, or all, of the cache cluster nodes within a provisioned cache cluster. This API will apply any modified cache parameter groups to the cache cluster. The reboot action takes place as soon as possible, and results in a momentary outage to the cache cluster. During the reboot, the cache cluster status is set to REBOOTING.

The reboot causes the contents of the cache (for each cache cluster node being rebooted) to be lost.

When the reboot is complete, a cache cluster event is created.

Parameters:

• cache_cluster_id (string) – The cache cluster identifier. This parameter is stored as a lowercase string.
• cache_node_ids_to_reboot (list) – A list of cache cluster node IDs to reboot. A node ID is a numeric identifier (0001, 0002, etc.). To reboot an entire cache cluster, specify all of the cache cluster node IDs.

reset_cache_parameter_group(cache_parameter_group_name, parameter_name_values, reset_all_parameters=None)

The ResetCacheParameterGroup operation modifies the parameters of a cache parameter group to the engine or system default value. You can reset specific parameters by submitting a list of parameter names. To reset the entire cache parameter group, specify the ResetAllParameters and CacheParameterGroupName parameters.

Parameters:

• cache_parameter_group_name (string) – The name of the cache parameter group to reset.
• reset_all_parameters (boolean) – If true , all parameters in the cache parameter group will be reset to default values. If false , no such action occurs.

Valid values: True | False

Parameters:parameter_name_values (list) – An array of parameter names to be reset. If you are not resetting the entire cache parameter group, you must specify at least one parameter name.

revoke_cache_security_group_ingress(cache_security_group_name, ec2_security_group_name, ec2_security_group_owner_id)

The RevokeCacheSecurityGroupIngress operation revokes ingress from a cache security group. Use this operation to disallow access from an Amazon EC2 security group that had been previously authorized.

Parameters:

• cache_security_group_name (string) – The name of the cache security group to revoke ingress from.
• ec2_security_group_name (string) – The name of the Amazon EC2 security group to revoke access from.
• ec2_security_group_owner_id (string) – The AWS account number of the Amazon EC2 security group owner. Note that this is not the same thing as an AWS access key ID - you must provide a valid AWS account number for this parameter.