AWS Elasticache & RDS in Private Subnet of VPC Using CloudFormation

AWS Elasticache is a fully managed in memory cache service. It supports two open sources compatible engines which are Redis & Memcached.

AWS RDS is Relation Database Service using which we can launch relational database(like MySQL, PostgreSQL, MariaDB, Amazon Aurora, Oracle & MS SQL Server) instances.

Steps to launch Elasticache & RDS into private subnet of VPC :

1. SecurityGroups to allow ingress communication to Cache & database instances as mentioned below

security group for RDS

security group for Elasticache cluster

2. SubnetGroups for cache & database instances.

Subnet Group for RDS with private subnet IDs

Subnet Group for Elasticache

3. Launch MySQL RDS & Elasticache Cluster.

Creating MySQL DB Instance using PrivateSubnetGroup & SecuityGroup

Single Node Elasticache Memcached Cluster

Complete Demo is available here