Backfilling - If true, then the index is currently in the backfilling phase.Each index is scoped to a given partition key value. The global secondary indexes, if any, on the table. If the table is in the DELETING state, no information about indexes will be returned. Recent changes might not be reflected in this value. DynamoDB updates this value approximately every six hours. ItemCount - Represents the number of items in the index.IndexSizeBytes - Represents the total size of the index, in bytes.
If you project the same attribute into two different indexes, this counts as two distinct attributes when determining the total. The total count of attributes provided in NonKeyAttributes, summed across all of the secondary indexes, must not exceed 100. NonKeyAttributes - A list of one or more non-key attribute names that are projected into the secondary index.ALL - All of the table attributes are projected into the index.The list of projected attributes is in NonKeyAttributes. INCLUDE - Only the specified table attributes are projected into the index.KEYS_ONLY - Only the index and primary keys are projected into the index.Each attribute specification is composed of: These are in addition to the primary key attributes and index key attributes, which are automatically projected. Projection - Specifies attributes that are copied (projected) from the table into the index.The key schema must begin with the same partition key as the table. The attribute names in the key schema must be between 1 and 255 characters (inclusive). KeySchema - Specifies the complete index key schema.IndexName - The name of the local secondary index.Tables with one or more local secondary indexes are subject to an item collection size limit, where the amount of data within a given item collection cannot exceed 10 GB. Represents one or more local secondary indexes on the table.