For more information, see Limits page in the Amazon DynamoDB Developer Guide. Global secondary index is an index that have a partition key and an optional sort key that are different from base table’s primary key. Detailed below. GSI can be created after the table is created, and it comes at an extra cost. Partition Keys dictate which partition the data is stored in, and Sort Keys dictate how the data is sorted within that Partition. Setting up DynamoDB. Global secondary index: An index with a partition key and sort key that can be different from those on the table. I'm using a Global Secondary Index to query my table and would like to be able to filter results based on other attributes (SQL equivalent would be a … A global secondary index is a more vanilla version of the local secondary index. Every index belongs to a table, which is called the base table for the index. The best DynamoDB has to offer is the secondary indexes: Local Secondary Index, and Global Secondary Index. DynamoDB provides a limit of five LSIs per table. The difference is: Local Secondary Index This means you may get different results when querying a table and a global secondary index at the same time. Both are defined using a KeySchema, and therefore has the same partition key and sort key arrangement. The recent limit increase of the maximum number of global secondary indexes per DynamoDB table from 5 to 20 can help you apply these usage patterns without worrying about hitting limits. In DynamoDB, we create tables with Partition Keys and Sort Keys. Global Secondary Indexes (GSI) GSI is an index that can have both a partition key and sort key different from the one on the table. What are GSIs? Although you can increase these limits by filing a case at AWS Support Center, ... Modifies the provisioned throughput settings, global secondary indexes, or DynamoDB Streams settings for a … global_secondary_index - (Optional) Describe a GSI for the table; subject to the normal limits on the number of GSIs, projected attributes, etc. It doesn't have the upsides like strong consistency or shared capacity, but it also doesn't have the downsides of item collection size limits or the same partition key requirement. replica - (Optional) Configuration block(s) with DynamoDB Global Tables V2 (version 2019.11.21) replication configurations. You cannot add a local secondary index to an existing table. You do not have the ability to specify strong consistency. The per-table limits apply only when you are creating a new table. Each table in DynamoDB has a limit of 20 global secondary indexes (default limit) and 5 local secondary indexes per table. Partition keys are limited to 10GB between the table Items and all local secondary indexes. Partition Key Length and Values − Their minimum length sits at 1 byte, and maximum at 2048 bytes, however, DynamoDB places no limit on values. A local secondary index maintains the same HASH key as the underlying table while allowing for a different RANGE key. No partition key size limits. For existing tables and their GSIs, DynamoDB doesn’t let you … If you have questions about how to get the most out of global secondary indexes, comment below or tweet us at @DynamoDB . Some additional notes about local secondary indexes: Must be specified at table creation. Global Secondary Indexes (GSI) are a nice feature in DynamoDB, which allows us to create indexes on existing tables. Local and Global Secondary Indexes. Global(GSI) vs Local Secondary Indexes(LSI) AWS DynamoDB supports two types of indexes: Global Secondary Index (GSI) and Local Secondary Index (LSI). They restrict the sum of the provisioned capacity of the new table itself and all its global secondary indexes. 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