AWS Developer Tools Blog

Release: AWS SDK for PHP 2.4.5

We would like to announce the release of version 2.4.5 of the AWS SDK for PHP. This release adds support for using the Redis cache engine software with Amazon ElastiCache.


  • Amazon ElastiCache now offers the Redis cache engine software, in addition to Memcached. Customers who currently use Redis can optionally “seed” a new ElastiCache Redis cache cluster with their existing data from a Redis snapshot file, easing migration to a managed ElastiCache environment. In addition, to support the Redis replication capabilities, the ElastiCache API now supports replication groups: Customers can create a replication group with a primary Redis cache node, and add one or more read replica nodes that automatically stay synchronized with cache data in the primary node. Read-intensive applications can be offloaded to a read replica, reducing the load on the primary node. Read replicas can also guard against data loss in the event of a primary cache node failure.
  • Added support for using the us-gov-west-1 region to the AWS CloudFormation client.

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