New DynamoDB Key Feature & Why It Matters

AWS announced multi-attribute composite keys for DynamoDB global secondary indexes on November 19th . That's a lot of words, but what does it actually mean? It means it's easier to pull data out of DynamoDB in ways you hadn't planned initially, without a bunch of extra work. To fully explain why, I need to explain keys in DynamoDB. I'll assume you know that DynamoDB is a NoSQL database, that the…