DynamoDB Dynomite Associations
Dynomite supports Associations. Associations are connections between 2 models. For example, a User can have_many Posts.
- DynamoDB Dynomite Has Many
- DynamoDB Dynomite Belongs To
- DynamoDB Dynomite Has One
- DynamoDB Dynomite Has And Belongs To Many
- DynamoDB Dynomite Associations Querying
- DynamoDB Dynomite Single Table Inheritance
- DynamoDB Dynomite Limits
- DynamoDB Dynomite Associations Test Data
Id Field as Primary Key
Associations work by storing the id to association-managed fields like users.posts_ids, posts.user_id, etc. The id field should be the Primary Key Partition Key. Otherwise, dynomite uses where("id.in": ids) to find the associated items. This results in a slow scan operation. When the id field is a partition key, dynomite can use the fast get_item operation in parallel.