» azurerm_redis_cache

Manages a Redis Cache.

» Example Usage

This example provisions a Standard Redis Cache. Other examples of the azurerm_redis_cache resource can be found in the ./examples/redis-cache directory within the Github Repository

resource "azurerm_resource_group" "example" {
  name     = "example-resources"
  location = "West Europe"
}

# NOTE: the Name used for Redis needs to be globally unique
resource "azurerm_redis_cache" "example" {
  name                = "example-cache"
  location            = "${azurerm_resource_group.example.location}"
  resource_group_name = "${azurerm_resource_group.example.name}"
  capacity            = 2
  family              = "C"
  sku_name            = "Standard"
  enable_non_ssl_port = false
  minimum_tls_version = "1.2"

  redis_configuration {}
}

» Argument Reference

The following arguments are supported:

  • name - (Required) The name of the Redis instance. Changing this forces a new resource to be created.

  • location - (Required) The location of the resource group.

  • resource_group_name - (Required) The name of the resource group in which to create the Redis instance.

  • capacity - (Required) The size of the Redis cache to deploy. Valid values for a SKU family of C (Basic/Standard) are 0, 1, 2, 3, 4, 5, 6, and for P (Premium) family are 1, 2, 3, 4.

  • family - (Required) The SKU family/pricing group to use. Valid values are C (for Basic/Standard SKU family) and P (for Premium)

  • sku_name - (Required) The SKU of Redis to use. Possible values are Basic, Standard and Premium.


  • enable_non_ssl_port - (Optional) Enable the non-SSL port (6379) - disabled by default.

  • minimum_tls_version - (Optional) The minimum TLS version. Defaults to 1.0.

  • patch_schedule - (Optional) A list of patch_schedule blocks as defined below - only available for Premium SKU's.

  • private_static_ip_address - (Optional) The Static IP Address to assign to the Redis Cache when hosted inside the Virtual Network. Changing this forces a new resource to be created.

  • redis_configuration - (Optional) A redis_configuration as defined below - with some limitations by SKU - defaults/details are shown below.

  • shard_count - (Optional) Only available when using the Premium SKU The number of Shards to create on the Redis Cluster.

  • subnet_id - (Optional) Only available when using the Premium SKU The ID of the Subnet within which the Redis Cache should be deployed. This Subnet must only contain Azure Cache for Redis instances without any other type of resources. Changing this forces a new resource to be created.

  • tags - (Optional) A mapping of tags to assign to the resource.

  • zones - (Optional) A list of a single item of the Availability Zone which the Redis Cache should be allocated in.


A redis_configuration block supports the following:

  • enable_authentication - (Optional) If set to false, the Redis instance will be accessible without authentication. Defaults to true.
  • maxmemory_reserved - (Optional) Value in megabytes reserved for non-cache usage e.g. failover. Defaults are shown below.
  • maxmemory_delta - (Optional) The max-memory delta for this Redis instance. Defaults are shown below.
  • maxmemory_policy - (Optional) How Redis will select what to remove when maxmemory is reached. Defaults are shown below.

  • maxfragmentationmemory_reserved - (Optional) Value in megabytes reserved to accommodate for memory fragmentation. Defaults are shown below.

  • rdb_backup_enabled - (Optional) Is Backup Enabled? Only supported on Premium SKU's.

  • rdb_backup_frequency - (Optional) The Backup Frequency in Minutes. Only supported on Premium SKU's. Possible values are: 15, 30, 60, 360, 720 and 1440.

  • rdb_backup_max_snapshot_count - (Optional) The maximum number of snapshots to create as a backup. Only supported for Premium SKU's.

  • rdb_storage_connection_string - (Optional) The Connection String to the Storage Account. Only supported for Premium SKU's. In the format: DefaultEndpointsProtocol=https;BlobEndpoint=${azurerm_storage_account.test.primary_blob_endpoint};AccountName=${azurerm_storage_account.test.name};AccountKey=${azurerm_storage_account.test.primary_access_key}.

resource "azurerm_redis_cache" "test" {
  # ...
  ignore_changes = ["redis_configuration.0.rdb_storage_connection_string"]
}
  • notify_keyspace_events - (Optional) Keyspace notifications allows clients to subscribe to Pub/Sub channels in order to receive events affecting the Redis data set in some way. Reference
redis_configuration {
  maxmemory_reserved = 10
  maxmemory_delta    = 2
  maxmemory_policy   = "allkeys-lru"
}

» Default Redis Configuration Values

Redis Value Basic Standard Premium
enable_authentication true true true
maxmemory_reserved 2 50 200
maxfragmentationmemory_reserved 2 50 200
maxmemory_delta 2 50 200
maxmemory_policy volatile-lru volatile-lru volatile-lru

A patch_schedule block supports the following:

  • day_of_week (Required) the Weekday name - possible values include Monday, Tuesday, Wednesday etc.

  • start_hour_utc - (Optional) the Start Hour for maintenance in UTC - possible values range from 0 - 23.

» Attributes Reference

The following attributes are exported:


A redis_configuration block exports the following:

  • maxclients - Returns the max number of connected clients at the same time.

» Import

Redis Cache's can be imported using the resource id, e.g.

terraform import azurerm_redis_cache.cache1 /subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/group1/providers/Microsoft.Cache/Redis/cache1