Dynamodb

We’re going to take a tour of some F# capabilities and use them to enforce the constraints of the DynamoDB client. We’ll look at domain modeling with discriminated unions, data access using the reader applicative, and error handling with the result type. DynamoDB and Data Types Before we get started, let’s summarise DynamoDB and its supported types. DynamoDB is a key-value & document database. DynamoDB tables are schemaless so each record can contain a different number of attributes. A record attribute has a string name and a value that is one of three types: Scalar, Set, and Document. A Scalar is a single value of a particular primitive type: string, number, boolean, binary or null. Number and binary values require string conversion before being sent over the network. …