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DataStax Astra DB Classic Documentation

    • Overview
      • Release notes
      • Astra DB FAQs
      • Astra DB glossary
      • Get support
    • Getting Started
      • Grant a user access
      • Load and retrieve data
        • Use DSBulk to load data
        • Use Data Loader in Astra Portal
      • Connect a driver
      • Build sample apps
      • Use integrations
        • Connect with DataGrip
        • Connect with DBSchema
        • Connect with JanusGraph
        • Connect with Strapi
    • Planning
      • Plan options
      • Database regions
    • Securing
      • Security highlights
      • Security guidelines
      • Default user permissions
      • Change your password
      • Reset your password
      • Authentication and Authorization
      • Astra DB Plugin for HashiCorp Vault
    • Connecting
      • Connecting to a VPC
      • Connecting Change Data Capture (CDC)
      • Connecting CQL console
      • Connect the Spark Cassandra Connector to Astra
      • Drivers for Astra DB
        • Connecting C++ driver
        • Connecting C# driver
        • Connecting Java driver
        • Connecting Node.js driver
        • Connecting Python driver
        • Drivers retry policies
      • Connecting Legacy drivers
      • Get Secure Connect Bundle
    • Migrating
      • FAQs
      • Preliminary steps
        • Feasibility checks
        • Deployment and infrastructure considerations
        • Create target environment for migration
        • Understand rollback options
      • Phase 1: Deploy ZDM Proxy and connect client applications
        • Set up the ZDM Automation with ZDM Utility
        • Deploy the ZDM Proxy and monitoring
          • Configure Transport Layer Security
        • Connect client applications to ZDM Proxy
        • Manage your ZDM Proxy instances
      • Phase 2: Migrate and validate data
      • Phase 3: Enable asynchronous dual reads
      • Phase 4: Change read routing to Target
      • Phase 5: Connect client applications directly to Target
      • Additional resources
        • Glossary
        • Troubleshooting
          • Troubleshooting tips
          • Troubleshooting scenarios
        • Contribution guidelines
        • Release Notes
    • Managing
      • Managing your organization
        • User permissions
        • Pricing and billing
        • Audit Logs
        • Configuring SSO
          • Configure SSO for Microsoft Azure AD
          • Configure SSO for Okta
          • Configure SSO for OneLogin
      • Managing your database
        • Create your database
        • View your databases
        • Database statuses
        • Use DSBulk to load data
        • Use Data Loader in Astra Portal
        • Monitor your databases
        • Manage multiple keyspaces
        • Using multiple regions
        • Terminate your database
        • Resize your classic database
        • Park your classic database
        • Unpark your classic database
      • Managing with DevOps API
        • Managing database lifecycle
        • Managing roles
        • Managing users
        • Managing tokens
        • Managing multiple regions
        • Get private endpoints
        • AWS PrivateLink
        • Azure PrivateLink
        • GCP Private Service
    • Astra CLI
    • Developing with Stargate APIs
      • Develop with REST
      • Develop with Document
      • Develop with GraphQL
        • Develop with GraphQL (CQL-first)
        • Develop with GraphQL (Schema-first)
      • Develop with gRPC
        • gRPC Rust client
        • gRPC Go client
        • gRPC Node.js client
        • gRPC Java client
      • Develop with CQL
      • Tooling Resources
      • Node.js Document API client
      • Node.js REST API client
    • Stargate QuickStarts
      • Document API QuickStart
      • REST API QuickStart
      • GraphQL API CQL-first QuickStart
    • API References
      • DevOps REST API v2
      • Stargate Document API v2
      • Stargate REST API v2

Creating a namespace

In order to use the Document API, you must create the namespace as a container that will store collections, which in turn store documents. Documents can themselves hold multiple documents. Multiple collections are contained in a namespace, but a collection cannot be contained in multiple namespaces.

Only namespaces need to be specifically created. Collections are specified when a document is inserted. An optional setting, replicas, defines the number of data replicas the database will store for the namespace. If no replica is defined, then for a namespace in a single datacenter cluster, the default is 1, and for a multiple-datacenter cluster, the default is 3 for each datacenter.

Simple namespace

Send a POST request to /api/rest/v2/schemas/namespaces. In this example we use myworld for the name, and no replicas setting, to default to 1.

  • cURL command (/v2)

  • Result

curl --location --request POST 'https://$ASTRA_CLUSTER_ID-$ASTRA_REGION.apps.astra.datastax.com/api/rest/v2/namespaces' \
--header "X-Cassandra-Token: $ASTRA_DB_APPLICATION_TOKEN" \
--header 'Content-Type: application/json' \
--data '{
    "name": "myworld"
}'
{"name":"myworld"}

The authorization token and the content type are passed with --header. The token must be identified as X-Cassandra-Token so that cluster recognizes the token and its value. The specified name for the namespace is passed as JSON data using --data. For shorthand, cURL can use:

  • -L for --location

  • -X for --request

  • -H for --header

  • -d for --data

Set replicas in simple namespace

To set the replicas, send a POST request to /api/rest/v2/schemas/namespaces. In this example we use myworld for the name, and 2 for the number of data replicas.

  • cURL command (/v2)

  • Result

curl -L -X POST '{base_ doc_url}/api/rest/v2/schemas/namespaces' \
-H "X-Cassandra-Token: $ASTRA_DB_APPLICATION_TOKEN" \
-H 'Content-Type: application/json' \
-d '{
    "name": "myworld",
    "replicas": 1
}'
{"name":"myworld"}

Namespace for multiple datacenters

For a multiple-datacenter cluster, a namespace is defined datacenters. Send a POST request to /api/rest/v2/schemas/namespaces. In this example we use myworld-dcs for the name, the datacenters are dc1 and dc2, where dc1 defaults to 3 replicas and dc2 is set to 5 replicas.

  • cURL command (/v2)

  • Result

curl -L -X POST 'https://$ASTRA_CLUSTER_ID-$ASTRA_REGION.apps.astra.datastax.com/api/rest/v2/schemas/namespaces' \
-H "X-Cassandra-Token: $ASTRA_DB_APPLICATION_TOKEN" \
-H 'Content-Type: application/json' \
-d '{
    "name": "myworld_dcs",
    "datacenters": [ {"name": "dc1"}, {"name": "dc2", "replicas": 5} ]
}'
{"name":"myworld_dcs"}

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