Choosing regions and availability zones for ElastiCache

You can provide additional scalability and reliability to your ElastiCache clusters by designating Regions and Availability Zones using the corresponding endpoint.

AWS Cloud computing resources are housed in highly available data center facilities. To provide additional scalability and reliability, these data center facilities are located in different physical locations. These locations are categorized by regions and Availability Zones.

AWS Regions are large and widely dispersed into separate geographic locations. Availability Zones are distinct locations within an AWS Region that are engineered to be isolated from failures in other Availability Zones. They provide inexpensive, low-latency network connectivity to other Availability Zones in the same AWS Region.

Important

Each region is completely independent. Any ElastiCache activity you initiate (for example, creating clusters) runs only in your current default region.

To create or work with a cluster in a specific region, use the corresponding regional service endpoint. For service endpoints, see Supported Regions & endpoints.

Regions and Availability Zones

Topics

• Locating your nodes
• Supported Regions & endpoints
• Using local zones with ElastiCache
• Using Outposts with ElastiCache

Locating your nodes

Amazon ElastiCache supports locating all of a cluster's nodes in a single or multiple Availability Zones (AZs). Further, if you elect to locate your nodes in multiple AZs (recommended), ElastiCache enables you to either choose the AZ for each node, or allow ElastiCache to choose them for you.

By locating the nodes in different AZs, you eliminate the chance that a failure, such as a power outage, in one AZ will cause your entire system to fail. Testing has demonstrated that there is no significant latency difference between locating all nodes in one AZ or spreading them across multiple AZs.

You can specify an AZ for each node when you create a cluster or by adding nodes when you modify an existing cluster. For more information, see the following:

• Creating a cluster in ElastiCache

• Modifying an ElastiCache cluster

• Adding nodes to an ElastiCache cluster

Supported Regions & endpoints

Amazon ElastiCache is available in multiple AWS Regions. This means that you can launch ElastiCache clusters in locations that meet your requirements. For example, you can launch in the AWS Region closest to your customers, or launch in a particular AWS Region to meet certain legal requirements.

Each Region is designed to be completely isolated from the other Regions. Within each Region are multiple Availability Zones (AZ). ElastiCache Serverless caches automatically replicate data across multiple availability zones (except us-west-1, where data is replicated in two availability zones) for high availability. When designing your own ElastiCache cluster, you can choose to launch your nodes in different AZs to achieve fault tolerance. For more information on Regions and Availability Zones, see Choosing regions and availability zones for ElastiCache at the top of this topic.

Regions where ElastiCache is supported
Region Name/Region	Endpoint	Protocol
US East (Ohio) Region us-east-2	elasticache.us-east-2.amazonaws.com	HTTPS
US East (N. Virginia) Region us-east-1	elasticache.us-east-1.amazonaws.com	HTTPS
US West (N. California) Region us-west-1	elasticache.us-west-1.amazonaws.com	HTTPS
US West (Oregon) Region us-west-2	elasticache.us-west-2.amazonaws.com	HTTPS
Canada (Central) Region ca-central-1	elasticache.ca-central-1.amazonaws.com	HTTPS
Canada (West) Region ca-west-1	elasticache.ca-west-1.amazonaws.com	HTTPS
Asia Pacific (Jakarta) ap-southeast-3	elasticache.ap-southeast-3.amazonaws.com	HTTPS
Asia Pacific (Mumbai) Region ap-south-1	elasticache.ap-south-1.amazonaws.com	HTTPS
Asia Pacific (Hyderabad) Region ap-south-2	elasticache.ap-south-2.amazonaws.com	HTTPS
Asia Pacific (Tokyo) Region ap-northeast-1	elasticache.ap-northeast-1.amazonaws.com	HTTPS
Asia Pacific (Seoul) Region ap-northeast-2	elasticache.ap-northeast-2.amazonaws.com	HTTPS
Asia Pacific (Osaka) Region ap-northeast-3	elasticache.ap-northeast-3.amazonaws.com	HTTPS
Asia Pacific (Singapore) Region ap-southeast-1	elasticache.ap-southeast-1.amazonaws.com	HTTPS
Asia Pacific (Sydney) Region ap-southeast-2	elasticache.ap-southeast-2.amazonaws.com	HTTPS
Europe (Frankfurt) Region eu-central-1	elasticache.eu-central-1.amazonaws.com	HTTPS
Europe (Zurich) Region eu-central-2	elasticache.eu-central-2.amazonaws.com	HTTPS
Europe (Stockholm) Region eu-north-1	elasticache.eu-north-1.amazonaws.com	HTTPS
Middle East (Bahrain) Region me-south-1	elasticache.me-south-1.amazonaws.com	HTTPS
Middle East (UAE) Region me-central-1	elasticache.me-central-1.amazonaws.com	HTTPS
Europe (Ireland) Region eu-west-1	elasticache.eu-west-1.amazonaws.com	HTTPS
Europe (London) Region eu-west-2	elasticache.eu-west-2.amazonaws.com	HTTPS
EU (Paris) Region eu-west-3	elasticache.eu-west-3.amazonaws.com	HTTPS
Europe (Milan) Region eu-south-1	elasticache.eu-south-1.amazonaws.com	HTTPS
Europe (Spain) Region eu-south-2	elasticache.eu-south-2.amazonaws.com	HTTPS
South America (São Paulo) Region sa-east-1	elasticache.sa-east-1.amazonaws.com	HTTPS
China (Beijing) Region cn-north-1	elasticache.cn-north-1.amazonaws.com.cn	HTTPS
China (Ningxia) Region cn-northwest-1	elasticache.cn-northwest-1.amazonaws.com.cn	HTTPS
Asia Pacific (Hong Kong) Region ap-east-1	elasticache.ap-east-1.amazonaws.com	HTTPS
Africa (Cape Town) Region af-south-1	elasticache.af-south-1.amazonaws.com	HTTPS
Israel (Tel Aviv) Region il-central-1	elasticache.il-central-1.amazonaws.com	HTTPS
AWS GovCloud (US-West) us-gov-west-1	elasticache.us-gov-west-1.amazonaws.com	HTTPS
AWS GovCloud (US-East) us-gov-east-1	elasticache.us-gov-east-1.amazonaws.com	HTTPS
For information on using the AWS GovCloud (US) with ElastiCache, see Services in the AWS GovCloud (US) region: ElastiCache.

Some regions support a subset of node types. For a table of supported node types by AWS Region, see Supported node types by AWS Region.

For a table of AWS products and services by region, see Products and Services by Region.