AWS
docs.aws.amazon.com › amazon dynamodb › developer guide › working with tables, items, queries, scans, and indexes › improving data access with secondary indexes in dynamodb › using global secondary indexes in dynamodb
Using Global Secondary Indexes in DynamoDB - Amazon DynamoDB
However, global secondary index queries cannot fetch attributes from the base table. For example, if you query GameTitleIndex as shown in the previous diagram, the query could not access any non-key attributes other than TopScore (although the key attributes GameTitle and UserId would automatically ...
Dynamodbguide
dynamodbguide.com › global secondary indexes
Global Secondary Indexes | DynamoDB, explained.
Querying a global secondary index is just like using a local secondary index -- you use the Query or Scan operations and specify the name of the index you're using. One thing that's different in this example is that we've set up a sparse index.
DynamoDB: GSI & Sort Key
Every table can have one partition key and one sort key composited together as the table’s primary key. A GSI is a second index, unrelated to the table’s primary key, that can have its own partition and sort key. The sort key is also optional. You can have a table or an index with only a partition key. Hope that helps. More on reddit.com
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February 13, 2024Why are DynamoDB Global Secondary Indexes still eventually consistent?
Is there something I am missing about TransactWriteItems and read consistency on a table? Not about TransactWriteItems or read consistency, but about performance. Performance in DynamoDB is fundamentally driven by having data and operations evenly distributed across partitions. When you use a GSI, you're essentially asking DynamoDB to store a copy of your data with a different partitioning scheme. If you want writes to the main table to be synchronous with the update to the GSI, then the maximum performance you could achieve would be the lowest between the two. The design of GSI is so that the operations on the main table shouldn't be negatively affected by the presence of a GSI, so they are async. That's why you have that consistency model. In fact, in your example, your application's use of DynamoDB will have its performance limited at the lowest performance between the "main" table and the "secondary" table you created. Which is perfectly fine! But it's just not how GSI is designed. More on reddit.com
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March 21, 2021DynamoDB got 20 global secondary indexes? How did I miss that?
This was updated in December 2018: https://aws.amazon.com/about-aws/whats-new/2018/12/amazon-dynamodb-increases-the-number-of-global-secondary-indexes-and-projected-index-attributes-you-can-create-per-table/ More on reddit.com
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July 9, 2019DynamoDB: Question on Global Secondary Index WCU usage
To avoid throttling, it is recommended to use same or more number of capacity units on GSI that of main table. More on reddit.com
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February 21, 2021How many GSIs can be created in DynamoDB?
A single DynamoDB table supports a maximum of 20 global secondary indexes.
dynobase.dev
dynobase.dev › dynamodb-gsi
DynamoDB Global Secondary Index (GSI) - The Ultimate Guide
Can you add a GSI to an existing DynamoDB table?
Yes. Unlike LSI, you can add a GSI to an existing DynamoDB table.
dynobase.dev
dynobase.dev › dynamodb-gsi
DynamoDB Global Secondary Index (GSI) - The Ultimate Guide
Why is the DynamoDB GSI not showing the item count?
Usually, DynamoDB takes around 6 hours to update the item count of a GSI. So, you will not see the item count get updated immediately.
dynobase.dev
dynobase.dev › dynamodb-gsi
DynamoDB Global Secondary Index (GSI) - The Ultimate Guide
Videos
What is a DynamoDB GSI (Global Secondary Index) ?
10:19
What is a DynamoDB GSI (Global Secondary Index) ? - YouTube
DynamoDB Indexes: GSI vs LSI - AWS
39:12
Understanding Global Secondary Indexes in Amazon DynamoDB with ...
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DynamoDB Global Secondary Index GSI | .NET ON AWS | AWS Serverless ...
09:58
DynamoDB - Global Secondary Index (GSI) Explained - YouTube
Medium
medium.com › @pratikwanjari › getting-started-with-dynamodb-and-global-secondary-indexes-5d864c611ace
Getting Started with DynamoDB and Global Secondary Indexes | by Pratik Wanjari | Medium
January 27, 2025 - A Global Secondary Index (GSI) in DynamoDB is a secondary index that enables querying a table using non-primary key attributes. Unlike the primary index, a GSI can have its own partition key and optional sort key, which can differ from the main table’s keys.
AWS
docs.aws.amazon.com › amazon dynamodb › developer guide › working with tables, items, queries, scans, and indexes › improving data access with secondary indexes in dynamodb › using global secondary indexes in dynamodb › working with global secondary indexes: java
Working with Global Secondary Indexes: Java - Amazon DynamoDB
In this example, the index is PrecipIndex, which has a partition key of Date and a sort key of Precipitation. The index query returns all of the weather data for a particular date, where the precipitation is greater than zero. The following are the steps to query a global secondary index using ...
DynamoDB
dynobase.dev › dynamodb-gsi
DynamoDB Global Secondary Index (GSI) - The Ultimate Guide
Select your DynamoDB table from the table list and click on Explore table items button. There, choose the Query option and select the GSI from the dropdown. Finally, enter the value you need to query and click the Run button. You can use the below AWS CLI command, which shows an example of querying the global secondary index through the DynamoDB API.
OneUptime
oneuptime.com › home › blog › how to use dynamodb global secondary indexes
How to Use DynamoDB Global Secondary Indexes
January 26, 2026 - # cloudformation-cost-optimized-gsi.yaml # Example of a cost-optimized GSI setup Resources: OrdersTable: Type: AWS::DynamoDB::Table Properties: TableName: Orders BillingMode: PAY_PER_REQUEST # No provisioned read/write capacity to manage AttributeDefinitions: - AttributeName: userId AttributeType: S - AttributeName: orderId AttributeType: S - AttributeName: status AttributeType: S - AttributeName: createdAt AttributeType: S KeySchema: - AttributeName: userId KeyType: HASH - AttributeName: orderId KeyType: RANGE GlobalSecondaryIndexes: - IndexName: status-createdAt-index KeySchema: - AttributeN
Rahulpnath
rahulpnath.com › blog › dynamodb-global-secondary-index-gsi
Exploring Global Secondary Index: Advanced Querying in DynamoDB From .NET | Rahul Nath
June 21, 2023 - Things to consider when creating a Global Secondary Index. The sample code below is on the WeatherForecast table, which has CityName and Date as the hash and range key, respectively. If you are new to DynamoDB, I highly recommend checking out my Getting Started with AWS DynamoDB For the .NET Developer blog post below, where I also show you how to set up the table used in this blog post.
TutorialsPoint
tutorialspoint.com › dynamodb › dynamodb_global_secondary_indexes.htm
DynamoDB - Global Secondary Indexes
DynamoDB does not write item data for a table item with an undefined attribute defined as an index partition or sort key. Create a table with global secondary indexes by using the CreateTable operation paired with the GlobalSecondaryIndexes parameter. You must specify an attribute to serve as the index partition key, or use another for the index sort key.
AWS
docs.aws.amazon.com › amazon dynamodb › developer guide › code examples for dynamodb using aws sdks › scenarios for dynamodb using aws sdks › query a dynamodb table using a global secondary index with an aws sdk
Query a DynamoDB table using a Global Secondary Index with an AWS SDK - Amazon DynamoDB
Args: table_name (str): The name of the DynamoDB table. index_name (str): The name of the Global Secondary Index. partition_key_name (str): The name of the GSI's partition key attribute. partition_key_value (str): The value of the GSI's partition key to query.
DynamoDB
dynobase.dev › code-examples › dynamodb-query-global-secondary-index-nodejs
[Code Examples] DynamoDB: Query Global Secondary Index in Nodejs
const AWS = require('aws-sdk'); ... console.log('Data from DynamoDB:', data); } }); This example queries a table named myTable with a global secondary index named myIndex....
Secondary Indexes
dynamodbguide.com › secondary indexes
Secondary Indexes | DynamoDB, explained.
Local secondary indexes can be used on a table with a composite primary key to specify an index with the same HASH key but a different RANGE key for a table. This is useful for the scenario mentioned in the intro above -- we still want to partition our data by Username, but we want to retrieve Items by a different attribute (Amount). Global secondary indexes can be used to specify a completely different key structure for a table.
AWS
docs.aws.amazon.com › amazon dynamodb › developer guide › best practices for designing and architecting with dynamodb › best practices for using secondary indexes in dynamodb › general guidelines for secondary indexes in dynamodb
General guidelines for secondary indexes in DynamoDB - Amazon DynamoDB
April 16, 2026 - As a result, the total size of indexed items for any one partition key value can't exceed 10 GB. Also, a local secondary index shares provisioned throughput settings for read and write activity with the table it is indexing. Each table in DynamoDB can have up to 20 global secondary indexes ...
Better Programming
betterprogramming.pub › aws-dynamodb-global-secondary-indexes-3ee7f6d8da0
AWS DynamoDB Global Secondary Indexes | by Piotr Mol | Better Programming
June 7, 2022 - If we come from the relational world, we can have a real headache learning DynamoDB. There are features of DynamoDB that need explanation. That’s why in this tutorial I’m going to explain to you what a Global Secondary Index is, why it is useful, and how to create one.
Medium
medium.com › @jun711.g › aws-dynamodb-global-and-local-secondary-indexes-comparison-80f4c587b1d7
AWS DynamoDB Global And Local Secondary Indexes Comparison | by Jun711 | Medium
August 16, 2019 - With a local secondary index that has UserId as its partition key and DateCreated as its sort key, you can retrieve a user’s articles sorted by date created. |UserId(Partition Key) | DateCreated(Sort Key) | ArticleName | Data| In short, use DynamoDB Global Secondary Index when you need to support querying non-primary key attribute of a table.
Tutorials Dojo
tutorialsdojo.com › home › aws cheat sheets › aws comparison of services › global secondary index vs local secondary index
Global Secondary Index vs Local Secondary Index
January 24, 2024 - Bookmarks Global Secondary Index Local Secondary Index A secondary index is a data structure that contains a subset of attributes from a table, along with an alternate key to support Query operations. An Amazon DynamoDB table can have multiple secondary indexes.
AWS
docs.aws.amazon.com › amazon dynamodb › developer guide › working with tables, items, queries, scans, and indexes › improving data access with secondary indexes in dynamodb › using global secondary indexes in dynamodb › working with global secondary indexes: .net
Working with Global Secondary Indexes: .NET - Amazon DynamoDB
The following are the steps to query a global secondary index using the .NET low-level API. Create an instance of the AmazonDynamoDBClient class. Create an instance of the QueryRequest class to provide the request information. Run the query method by providing the request object as a parameter. The attribute name Date is a DynamoDB reserved word. Therefore, you must use an expression attribute name as a placeholder in the KeyConditionExpression. The following C# code example ...
DynamoDB
dynobase.dev › dynamodb-indexes
DynamoDB Indexes Explained [Local & Global Secondary Index]
Unlike GSIs, they share throughput with the base table - if you query for data using LSI, the usage will be calculated against the capacity of the underlying table and its base index. They have to be specified at table creation - you can't add or remove them after provisioning the table. Global Secondary Indexes are much more flexible and don't have LSI limitations.
GeeksforGeeks
geeksforgeeks.org › dynamodb › aws-dynamodb-query-the-global-secondary-index
AWS DynamoDB - Query the Global Secondary Index - GeeksforGeeks
March 28, 2023 - Therefore, for fast retrieval of results on non-key attributes, we use Secondary Global Indexes. For example, we create a secondary global index named Stream-index with a partition key as Stream and a sort key as Maths.
AWS
docs.aws.amazon.com › amazon dynamodb › developer guide › working with tables, items, queries, scans, and indexes › improving data access with secondary indexes in dynamodb › using global secondary indexes in dynamodb › managing global secondary indexes in dynamodb
Managing Global Secondary Indexes in DynamoDB - Amazon DynamoDB
You can optionally specify another attribute for the index sort key. It is not necessary for either of these key attributes to be the same as a key attribute in the table. For example, in the GameScores table (see Using Global Secondary Indexes in DynamoDB), neither TopScore nor TopScoreDateTime ...
egghead.io
egghead.io › lessons › aws-an-introduction-to-dynamodb-global-secondary-indexes-gsis
An Introduction to DynamoDB Global Secondary Indexes (GSIs) | egghead.io
GSIs allow us to create sparse ... single table designs. ... Chris Biscardi: [0:00] Here we have a DynamoDB table, the partition key of PK, and a sort key of SK....
Published March 2, 2020