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This component provisions an AWS MemoryDB cluster. MemoryDB is a fully managed, Redis-compatible, in-memory database service.

While Redis is commonly used as a cache, MemoryDB is designed to also function well as a vector database. This makes it appropriate for AI model backends.

Usage

Stack Level: Regional

Example

Here's an example snippet for how to use this component:

components:
  terraform:
    vpc:
      vars:
        availability_zones:
          - "a"
          - "b"
          - "c"
        ipv4_primary_cidr_block: "10.111.0.0/18"
    memorydb:
      vars: {}

Requirements

Name	Version
<a name="requirement_terraform"></a> terraform	>= 1.0.0
<a name="requirement_aws"></a> aws	>= 5.0

Providers

No providers.

Modules

Name	Source	Version
<a name="module_iam_roles"></a> iam_roles	../account-map/modules/iam-roles	n/a
<a name="module_memorydb"></a> memorydb	cloudposse/memorydb/aws	0.1.0
<a name="module_this"></a> this	cloudposse/label/null	0.25.0
<a name="module_vpc"></a> vpc	cloudposse/stack-config/yaml//modules/remote-state	1.5.0

Resources

No resources.

Inputs

Name	Description	Type	Default	Required
<a name="input_additional_tag_map"></a> additional_tag_map	Additional key-value pairs to add to each map in `tags_as_list_of_maps`. Not added to `tags` or `id`.<br>This is for some rare cases where resources want additional configuration of tags<br>and therefore take a list of maps with tag key, value, and additional configuration.	`map(string)`	`{}`	no
<a name="input_admin_username"></a> admin_username	The username for the MemoryDB admin	`string`	`"admin"`	no
<a name="input_attributes"></a> attributes	ID element. Additional attributes (e.g. `workers` or `cluster`) to add to `id`,<br>in the order they appear in the list. New attributes are appended to the<br>end of the list. The elements of the list are joined by the `delimiter`<br>and treated as a single ID element.	`list(string)`	`[]`	no
<a name="input_auto_minor_version_upgrade"></a> auto_minor_version_upgrade	Indicates that minor engine upgrades will be applied automatically to the cluster during the maintenance window	`bool`	`true`	no
<a name="input_context"></a> context	Single object for setting entire context at once.<br>See description of individual variables for details.<br>Leave string and numeric variables as `null` to use default value.<br>Individual variable settings (non-null) override settings in context object,<br>except for attributes, tags, and additional_tag_map, which are merged.	`any`	<pre>{<br> "additional_tag_map": {},<br> "attributes": [],<br> "delimiter": null,<br> "descriptor_formats": {},<br> "enabled": true,<br> "environment": null,<br> "id_length_limit": null,<br> "label_key_case": null,<br> "label_order": [],<br> "label_value_case": null,<br> "labels_as_tags": [<br> "unset"<br> ],<br> "name": null,<br> "namespace": null,<br> "regex_replace_chars": null,<br> "stage": null,<br> "tags": {},<br> "tenant": null<br>}</pre>	no
<a name="input_delimiter"></a> delimiter	Delimiter to be used between ID elements.<br>Defaults to `-` (hyphen). Set to `""` to use no delimiter at all.	`string`	`null`	no
<a name="input_descriptor_formats"></a> descriptor_formats	Describe additional descriptors to be output in the `descriptors` output map.<br>Map of maps. Keys are names of descriptors. Values are maps of the form<br>`{<br> format = string<br> labels = list(string)<br>}`<br>(Type is `any` so the map values can later be enhanced to provide additional options.)<br>`format` is a Terraform format string to be passed to the `format()` function.<br>`labels` is a list of labels, in order, to pass to `format()` function.<br>Label values will be normalized before being passed to `format()` so they will be<br>identical to how they appear in `id`.<br>Default is `{}` (`descriptors` output will be empty).	`any`	`{}`	no
<a name="input_enabled"></a> enabled	Set to false to prevent the module from creating any resources	`bool`	`null`	no
<a name="input_engine_version"></a> engine_version	The version of the Redis engine to use	`string`	`"6.2"`	no
<a name="input_environment"></a> environment	ID element. Usually used for region e.g. 'uw2', 'us-west-2', OR role 'prod', 'staging', 'dev', 'UAT'	`string`	`null`	no
<a name="input_id_length_limit"></a> id_length_limit	Limit `id` to this many characters (minimum 6).<br>Set to `0` for unlimited length.<br>Set to `null` for keep the existing setting, which defaults to `0`.<br>Does not affect `id_full`.	`number`	`null`	no
<a name="input_label_key_case"></a> label_key_case	Controls the letter case of the `tags` keys (label names) for tags generated by this module.<br>Does not affect keys of tags passed in via the `tags` input.<br>Possible values: `lower`, `title`, `upper`.<br>Default value: `title`.	`string`	`null`	no
<a name="input_label_order"></a> label_order	The order in which the labels (ID elements) appear in the `id`.<br>Defaults to ["namespace", "environment", "stage", "name", "attributes"].<br>You can omit any of the 6 labels ("tenant" is the 6th), but at least one must be present.	`list(string)`	`null`	no
<a name="input_label_value_case"></a> label_value_case	Controls the letter case of ID elements (labels) as included in `id`,<br>set as tag values, and output by this module individually.<br>Does not affect values of tags passed in via the `tags` input.<br>Possible values: `lower`, `title`, `upper` and `none` (no transformation).<br>Set this to `title` and set `delimiter` to `""` to yield Pascal Case IDs.<br>Default value: `lower`.	`string`	`null`	no
<a name="input_labels_as_tags"></a> labels_as_tags	Set of labels (ID elements) to include as tags in the `tags` output.<br>Default is to include all labels.<br>Tags with empty values will not be included in the `tags` output.<br>Set to `[]` to suppress all generated tags.<br>Notes:<br> The value of the `name` tag, if included, will be the `id`, not the `name`.<br> Unlike other `null-label` inputs, the initial setting of `labels_as_tags` cannot be<br> changed in later chained modules. Attempts to change it will be silently ignored.	`set(string)`	<pre>[<br> "default"<br>]</pre>	no
<a name="input_maintenance_window"></a> maintenance_window	The weekly time range during which system maintenance can occur	`string`	`null`	no
<a name="input_name"></a> name	ID element. Usually the component or solution name, e.g. 'app' or 'jenkins'.<br>This is the only ID element not also included as a `tag`.<br>The "name" tag is set to the full `id` string. There is no tag with the value of the `name` input.	`string`	`null`	no
<a name="input_namespace"></a> namespace	ID element. Usually an abbreviation of your organization name, e.g. 'eg' or 'cp', to help ensure generated IDs are globally unique	`string`	`null`	no
<a name="input_node_type"></a> node_type	The compute and memory capacity of the nodes in the cluster	`string`	`"db.r6g.large"`	no
<a name="input_num_replicas_per_shard"></a> num_replicas_per_shard	The number of replicas per shard	`number`	`1`	no
<a name="input_num_shards"></a> num_shards	The number of shards in the cluster	`number`	`1`	no
<a name="input_parameter_group_family"></a> parameter_group_family	The name of the parameter group family	`string`	`"memorydb_redis6"`	no
<a name="input_parameters"></a> parameters	Key-value mapping of parameters to apply to the parameter group	`map(string)`	`{}`	no
<a name="input_port"></a> port	The port on which the cluster accepts connections	`number`	`6379`	no
<a name="input_regex_replace_chars"></a> regex_replace_chars	Terraform regular expression (regex) string.<br>Characters matching the regex will be removed from the ID elements.<br>If not set, `"/[^a-zA-Z0-9-]/"` is used to remove all characters other than hyphens, letters and digits.	`string`	`null`	no
<a name="input_security_group_ids"></a> security_group_ids	List of security group IDs to associate with the MemoryDB cluster	`list(string)`	`[]`	no
<a name="input_snapshot_arns"></a> snapshot_arns	List of ARNs for the snapshots to be restored. NOTE: destroys the existing cluster. Use for restoring.	`list(string)`	`[]`	no
<a name="input_snapshot_retention_limit"></a> snapshot_retention_limit	The number of days for which MemoryDB retains automatic snapshots before deleting them	`number`	`null`	no
<a name="input_snapshot_window"></a> snapshot_window	The daily time range during which MemoryDB begins taking daily snapshots	`string`	`null`	no
<a name="input_sns_topic_arn"></a> sns_topic_arn	The ARN of the SNS topic to send notifications to	`string`	`null`	no
<a name="input_ssm_kms_key_id"></a> ssm_kms_key_id	The KMS key ID to use for SSM parameter encryption. If not specified, the default key will be used.	`string`	`null`	no
<a name="input_ssm_parameter_name"></a> ssm_parameter_name	The name of the SSM parameter to store the password in. If not specified, the password will be stored in `/{context.id}/admin_password`	`string`	`""`	no
<a name="input_stage"></a> stage	ID element. Usually used to indicate role, e.g. 'prod', 'staging', 'source', 'build', 'test', 'deploy', 'release'	`string`	`null`	no
<a name="input_tags"></a> tags	Additional tags (e.g. `{'BusinessUnit': 'XYZ'}`).<br>Neither the tag keys nor the tag values will be modified by this module.	`map(string)`	`{}`	no
<a name="input_tenant"></a> tenant	ID element _(Rarely used, not included by default)_. A customer identifier, indicating who this instance of a resource is for	`string`	`null`	no
<a name="input_tls_enabled"></a> tls_enabled	Indicates whether Transport Layer Security (TLS) encryption is enabled for the cluster	`bool`	`true`	no
<a name="input_vpc_component_name"></a> vpc_component_name	The name of the VPC component. This is used to pick out subnets for the MemoryDB cluster	`string`	`"vpc"`	no

Outputs

Name	Description
<a name="output_admin_acl_arn"></a> admin_acl_arn	The ARN of the MemoryDB user's ACL
<a name="output_admin_arn"></a> admin_arn	The ARN of the MemoryDB user
<a name="output_admin_password_ssm_parameter_name"></a> admin_password_ssm_parameter_name	The name of the SSM parameter storing the password for the MemoryDB user
<a name="output_admin_username"></a> admin_username	The username for the MemoryDB user
<a name="output_arn"></a> arn	The ARN of the MemoryDB cluster
<a name="output_cluster_endpoint"></a> cluster_endpoint	The endpoint of the MemoryDB cluster
<a name="output_engine_patch_version"></a> engine_patch_version	The Redis engine version
<a name="output_id"></a> id	The name of the MemoryDB cluster
<a name="output_parameter_group_arn"></a> parameter_group_arn	The ARN of the MemoryDB parameter group
<a name="output_parameter_group_id"></a> parameter_group_id	The name of the MemoryDB parameter group
<a name="output_shards"></a> shards	The shard details for the MemoryDB cluster
<a name="output_subnet_group_arn"></a> subnet_group_arn	The ARN of the MemoryDB subnet group
<a name="output_subnet_group_id"></a> subnet_group_id	The name of the MemoryDB subnet group

References

MemoryDB Documentation
Vector Searches with MemoryDB
AWS CLI command to list MemoryDB engine versions: aws memorydb describe-engine-versions.

[!NOTE] This project is part of Cloud Posse's comprehensive "SweetOps" approach towards DevOps.
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Related Projects

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Cloud Posse Terraform Modules - Our collection of reusable Terraform modules used by our reference architectures.
Atmos - Atmos is like docker-compose but for your infrastructure

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This project is maintained by <a href="https://cpco.io/homepage?utm_source=github&utm_medium=readme&utm_campaign=cloudposse-terraform-components/aws-memorydb&utm_content=">Cloud Posse, LLC</a>. <a href="https://cpco.io/homepage?utm_source=github&utm_medium=readme&utm_campaign=cloudposse-terraform-components/aws-memorydb&utm_content="><img src="https://cloudposse.com/logo-300x69.svg" align="right" /></a>

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