Amazon Elasticache and Amazon DynamoDB are two of the most popular managed services offered by AWS. Both services are designed to improve application performance, but they have different use cases.
Amazon ElastiCache is a fully-managed, in-memory cache service that supports two open-source in-memory caching engines: Redis and Memcached. It provides a fast and scalable way to improve the performance of web applications by caching frequently accessed data in memory.
ElastiCache is best suited for read-heavy workloads, such as social media platforms, e-commerce websites, and gaming applications. It can help reduce latency and improve throughput by reducing the number of requests made to a database or backend service.
Here are some use cases where ElastiCache would be a good fit:
Amazon DynamoDB is a fully-managed NoSQL database service that provides fast and predictable performance with seamless scalability. It's designed to handle any type of data and can scale from a few requests per second to millions of requests per second.
DynamoDB is best suited for both read and write-heavy workloads, such as mobile applications, ad tech platforms, and IoT devices. It provides a flexible data model and allows you to store and query semi-structured data at scale.
Here are some use cases where DynamoDB would be a good fit:
In summary, you should use Amazon ElastiCache when you need to cache frequently accessed data and improve application performance. You should use Amazon DynamoDB when you need to store and query semi-structured data at scale or have to handle high write and read workloads.
Dragonfly is fully compatible with the Redis ecosystem and requires no code changes to implement.