# CacheNode
<a name="API_CacheNode"></a>

Represents an individual cache node within a cluster. Each cache node runs its own instance of the cluster's protocol-compliant caching software - either Memcached, Valkey or Redis OSS.

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: 

     **M7g node types**: `cache.m7g.large`, `cache.m7g.xlarge`, `cache.m7g.2xlarge`, `cache.m7g.4xlarge`, `cache.m7g.8xlarge`, `cache.m7g.12xlarge`, `cache.m7g.16xlarge` 
**Note**  
For region availability, see [Supported Node Types](https://docs.aws.amazon.com/AmazonElastiCache/latest/dg/CacheNodes.SupportedTypes.html#CacheNodes.SupportedTypesByRegion) 

     **M6g node types** (available only for Redis OSS 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` 

     **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` 

     **T4g node types** (available only for Redis OSS engine version 5.0.6 onward and Memcached engine version 1.5.16 onward): `cache.t4g.micro`, `cache.t4g.small`, `cache.t4g.medium` 

     **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. Existing clusters are still supported but creation of new clusters is not supported for these types.)

     **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. Existing clusters are still supported but creation of new clusters is not supported for these types.)

     **C1 node types:** `cache.c1.xlarge` 
+ Memory optimized:
  + Current generation: 

     **R7g node types**: `cache.r7g.large`, `cache.r7g.xlarge`, `cache.r7g.2xlarge`, `cache.r7g.4xlarge`, `cache.r7g.8xlarge`, `cache.r7g.12xlarge`, `cache.r7g.16xlarge` 
**Note**  
For region availability, see [Supported Node Types](https://docs.aws.amazon.com/AmazonElastiCache/latest/dg/CacheNodes.SupportedTypes.html#CacheNodes.SupportedTypesByRegion) 

     **R6g node types** (available only for Redis OSS 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` 

     **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. Existing clusters are still supported but creation of new clusters is not supported for these types.)

     **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.
+ Valkey or Redis OSS append-only files (AOF) are not supported for T1 or T2 instances.
+ Valkey or Redis OSS Multi-AZ with automatic failover is not supported on T1 instances.
+ The configuration variables `appendonly` and `appendfsync` are not supported on Valkey, or on Redis OSS version 2.8.22 and later.

## Contents
<a name="API_CacheNode_Contents"></a>

**Note**  
In the following list, the required parameters are described first.

 ** CacheNodeCreateTime **   
The date and time when the cache node was created.  
Type: Timestamp  
Required: No

 ** CacheNodeId **   
The cache node identifier. A node ID is a numeric identifier (0001, 0002, etc.). The combination of cluster ID and node ID uniquely identifies every cache node used in a customer's Amazon account.  
Type: String  
Required: No

 ** CacheNodeStatus **   
The current state of this cache node, one of the following values: `available`, `creating`, `rebooting`, or `deleting`.  
Type: String  
Required: No

 ** CustomerAvailabilityZone **   
The Availability Zone where this node was created and now resides.  
Type: String  
Required: No

 ** CustomerOutpostArn **   
The customer outpost ARN of the cache node.  
Type: String  
Required: No

 ** Endpoint **   
The hostname for connecting to this cache node.  
Type: [Endpoint](API_Endpoint.md) object  
Required: No

 ** ParameterGroupStatus **   
The status of the parameter group applied to this cache node.  
Type: String  
Required: No

 ** SourceCacheNodeId **   
The ID of the primary node to which this read replica node is synchronized. If this field is empty, this node is not associated with a primary cluster.  
Type: String  
Required: No

## See Also
<a name="API_CacheNode_SeeAlso"></a>

For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/elasticache-2015-02-02/CacheNode) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/elasticache-2015-02-02/CacheNode) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/elasticache-2015-02-02/CacheNode)