# Overview A local secondary index is... #flashcard - An additional index that can be placed on a database that is managed within each individual partition (i.e., locally). The index is maintained by the partition. - It would be used for efficient reads when all the data for the read is in a single partition. If data for the query is across many partitions, then the query will need to go to all partitions, find the data, and consolidate it for a final result. <!--ID: 1751507776874--> # Key Considerations # Pros - No need to perform extra writes over the network # Cons - Need to read from all partitions to do ranged search across non-partitioned value # Use Cases # Related Topics