Backend Notes

The #name / :value ceremony is a symptom; what it is a symptom of decides how you should build a tool for it. Designing a DynamoDB params builder decision by decision (access-patterns-as-queries over entities, whole operations over fragments, schema-aware correctness guards, and opt-in generics that check values while keeping field names open) using ddbflow as the worked example, with the ORM/builder landscape in context.