Let's look at the use case of adding a hotel to the cart. What I'm going to walk through is a very slimmed down version of what an e-commerce, add to cart functionality, will look like. In reality, it is a very complex system to build and operate. As mentioned, we need the following resources for this use case:
- Amazon Route 53 for storing the domain name of our hotel travel website, as discussed in the previous use case
- Amazon API Gateway for handling the HTTP(S) that come to our hotel website to add a hotel to their cart
- The AWS Lambda Function for handling the addition of hotels to carts
- The Amazon DynamoDB table that stores the cart items, along with information such as hotel details, trip start date and end date, and the number of adults and children
The reference architecture of how the system works is shown in the following diagram. The flow for the...