Using the DynamoDB accelerator (DAX)

DynamoDB, by itself, even with thousands of requests, can deliver millisecond latency response times. This satisfies the needs of many companies and customers, but there are some applications that need microsecond performance, and this is where DynamoDB Accelerator (DAX) comes into focus.

DAX is almost equivalent to a turbo button for your DynamoDB table. It caches the most frequently requested results and then makes them available via an endpoint. There is no need to spin up a third-party cache, no need to manage nodes, and it's as easy to implement. You simply go to the DAX menu under the main DynamoDB page and then spin up your DAX cluster:

Figure 5.5 – DAX example architecture

Industries such as Ad-Tech can utilize the caching properties and speed of DAX when designing and implementing their systems to go out and place bids for digital advertising real estate. Those millisecond latencies in placing...