Amazon Elasticache is better than Amazon
Elasticsearch and
Amazon SQS as the former is good for dumping a lot of data for searching purposes later on and the latter is good for maintaining a message bus whereas Amazon ElastiCache purely works as a caching data store to provide faster data access. AWS DynamoDB is a good alternative if you're looking for a serverless solution as in Amazon ElastiCache, we get to see instances while in AWS DynamoDB, we can simply access the data without the need of bringing up a server.