dynamodb-tutorials Legacy receives updates Legacy sends updates Tutorial 1 - basics Code Article Tutorial 2 - testing Code Article Tutorial 3 - Single table design Code This tutorial uses a slightly different codebase but the concepts are the same Article Tutorial 4 - streams part 1 - aggregation using atomic updates Code Article Tutorial 5 - streams part 2 - search index integration Code Article Tutorial 6 - streams part 3 - legacy system integrations Code Article