Concepts
To efficiently upload large amounts of data in parallel to Azure Cosmos DB using the Bulk Support feature in the Azure Cosmos DB SDK, follow the steps outlined below:
1. Install the appropriate SDK
Ensure that you have the latest version of the Azure Cosmos DB SDK installed in your development environment. You can install the SDK using NuGet or by referencing the appropriate package in your project file.
2. Create an instance of the DocumentClient class
Create an instance of the DocumentClient class, which provides the entry point for interacting with Azure Cosmos DB. Pass in the necessary connection details, including the URI and the authorization key.
using Microsoft.Azure.Documents.Client;
string endpointUrl = "";
string authorizationKey = "";
DocumentClient client = new DocumentClient(new Uri(endpointUrl), authorizationKey);
3. Define the collection and bulk import options
Specify the target collection in which you want to insert the documents. Additionally, define the options for the bulk import operation, such as whether to allow updates or throw errors on existing documents.
string databaseId = "
string collectionId = "
DocumentCollection collection = client
.CreateDocumentCollectionQuery(UriFactory.CreateDatabaseUri(databaseId))
.Where(c => c.Id == collectionId)
.AsEnumerable()
.FirstOrDefault();
BulkImportOptions options = new BulkImportOptions()
{
EnableUpsert = true, // Enable document updates if a document already exists
MaxConcurrencyPerPartitionKeyRange = -1, // Use the maximum available concurrency for faster import
DiscardOnErrors = false // Continue processing other documents even on error
};
4. Prepare the documents for bulk import
Convert your documents into instances of the Microsoft.Azure.Documents.Document class, which is the primary data object in Azure Cosmos DB. Ensure that your documents adhere to the expected schema of the target collection.
List
Document document1 = new Document()
{
Id = "documentId1",
// Add properties and values for your document
};
Document document2 = new Document()
{
Id = "documentId2",
// Add properties and values for your document
};
documents.Add(document1);
documents.Add(document2);
5. Perform the bulk import operation
Use the CreateDocumentAsync method of the DocumentClient to perform the bulk import operation. This method supports uploading multiple documents in a single request, thereby reducing latency and improving overall throughput.
await client.CreateDocumentAsync(
collection.SelfLink,
documents,
options,
disableAutomaticIdGeneration: true); // Disable automatic generation of document IDs
By following these steps, you can efficiently perform a multi-document load using Bulk Support in the Azure Cosmos DB SDK. This approach enables you to seamlessly upload large amounts of data in parallel, ensuring optimal performance when working with Azure Cosmos DB.
Answer the Questions in Comment Section
Which language can be used to perform a multi-document load using Bulk Support in the SDK?
a) C#
b) Java
c) Python
d) All of the above
Correct answer: d) All of the above
True or False: Multi-document loads using Bulk Support in the SDK are only available for SQL API in Azure Cosmos DB.
Correct answer: True
When performing a multi-document load using Bulk Support, which operation is used to create multiple documents in a single request?
a) Create
b) Update
c) Delete
d) Query
Correct answer: a) Create
How can you specify the throughput to be used for the multi-document load operation?
a) By setting the RequestUnitPerMinute property
b) By setting the ThroughputControlConfig property
c) By setting the MaxConcurrency property
d) None of the above
Correct answer: a) By setting the RequestUnitPerMinute property
True or False: Multi-document loads using Bulk Support are atomic in nature, ensuring that either all documents are created or none are.
Correct answer: True
Which property of the BulkOperations object is used to specify the concurrency control policy for the multi-document load operation?
a) ThroughputControlConfig
b) MaxConcurrency
c) RequestOptions
d) RetryOptions
Correct answer: b) MaxConcurrency
In the SDK, which method is used to execute the multi-document load operation?
a) ExecuteStoredProcedureAsync
b) CreateDocumentAsync
c) ExecuteBulkOperationsAsync
d) ExecuteQueryAsync
Correct answer: c) ExecuteBulkOperationsAsync
Which data structure is used to define the operations to be performed during a multi-document load?
a) List<Document>
b) Dictionary<string, object>
c) JArray
d) BulkOperations
Correct answer: d) BulkOperations
True or False: During a multi-document load using Bulk Support, all documents must have the same partition key value.
Correct answer: True
Which property of the BulkOperations object is used to specify the collection where the documents will be loaded?
a) CollectionUri
b) DatabaseName
c) CollectionName
d) PartitionKey
Correct answer: a) CollectionUri
Great post on Bulk Support in the SDK! Helped me understand multi-document load much better.
Can someone explain how retry policies work in Bulk support for Cosmos DB?
Thanks for the detailed explanation!
Really appreciate the explanations in this guide. Helped me a lot!
Is there a way to optimize the performance of bulk operations in Cosmos DB?
Very informative article.
Is Bulk support available for all the SDKs?
Can someone share a sample code snippet for bulk insertion?