DAX and DynamoDB working together
In this section, you will learn about how DAX and DynamoDB work together when your application needs to perform reads and writes on DynamoDB table data. There are a couple of caching strategies that may be used, depending on the use case and, mostly, the write-heavy or read-heavy nature of the application. Before learning about these caching strategies, let’s learn more about a crucial feature of DAX called TTL.
TTL
DAX provides a TTL feature for both the item cache and query cache. The TTL allows you to set an expiration time for cached items and queries, ensuring that stale data is automatically removed from the cache. The item cache stores individual items retrieved from DynamoDB, while the query cache stores the results of queries executed against DynamoDB. The difference between the two caches matters because the TTL values may need to be different for each cache depending on the application’s requirements. For example, the...
