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DataStax Astra Streaming

Freemium#12 of 27 in Event Streaming Platforms

DataStax Astra Streaming: A managed Pulsar service with broad connectors, CDC, APIs, and a free plan. Ranked #12 of 27 in Event Streaming Platforms by our editors (8.1/10); pricing: Free plan; best for teams already using Astra DB or Pulsar.

8.1/10Editor score
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DataStax Astra Streaming8.1 Visit DataStax

At a glance

  • Editor score
    8.1 / 10
  • Pricing
    Free plan
  • Best for
    Teams already using Astra DB or Pulsar
  • Free plan
    Yes
  • Deployment model
    Cloud
  • Facts checked
    20 Sep 2026
DataStax Astra Streaming screenshot

  • Where it wins

    • Managed tenants, namespaces, topics, subscriptions, and Pulsar functions
    • Source and sink connectors plus CDC from Astra DB
    • Broad integrations and client APIs for five programming languages

  • Where it doesn't

    • Paid usage uses customer-specific Streaming Capacity Unit billing
    • Cloud deployment only, with no open-source distribution
    • May be broader than needed for teams seeking a narrow streaming tool

Our verdict on DataStax Astra Streaming

DataStax Astra Streaming is a fully managed SaaS event-streaming and event-processing service based on Apache Pulsar. It is designed for individual developers, small and mid-market businesses, and enterprise workloads that need publish/subscribe or queuing systems, real-time event processing, change data capture from Astra DB, or cross-region replication. The service runs in the cloud and provides managed tenants, namespaces, topics, subscriptions, serverless Pulsar functions, source and sink connectors, and APIs. Teams already working with Astra DB or Pulsar are the clearest fit.

Its ecosystem is a major part of the product. Astra Streaming connects with Astra DB, Apache Cassandra, Apache Kafka, AWS Kinesis, Cloud Storage, Elasticsearch, Google BigQuery, ClickHouse, MariaDB, PostgreSQL, SQLite, Snowflake, and Debezium connectors for MongoDB, MySQL, and Oracle. Client APIs cover C#, Go, Java, Node.js, and Python, while Astra Streaming DevOps and Pulsar Admin APIs support operational integration. Schema mapping for Astra DB sink workflows adds a GPT-based option for handling schema-related tasks.

Pricing follows a freemium model with a free plan and multiple paid plans. According to the vendor’s pricing description, usage can include Streaming Capacity Unit billing and additional charges, with capacity billing handled on a customer-specific basis. That makes the free plan useful for evaluating the service, while paid adoption calls for workload-based cost planning. Choose Astra Streaming when managed Pulsar, CDC, connectors, and Astra DB integration matter together. A narrower cloud streaming service may suit teams that do not need this broader ecosystem or Pulsar-based feature set.

DataStax Astra Streaming pricing

Plans Free planFreemium A usable free plan; paid tiers unlock the limits above. Prices checked 20 Sep 2026.
See plans on docs.datastax.com

DataStax Astra Streaming fact sheet

Free planYes
Paid fromNot verified
Deployment modelCloud
Maximum retentionNot verified
Stream processingYes
Schema registryYes
Delivery guaranteeNot verified
Connectors listedNot verified
Supported client languagesC#, Golang, Java, Node.js, Python, Spring Boot
DeploymentCloud
PlatformsWeb
SupportDocs
Built forSolo, Small business, Mid-market, Enterprise (editorial estimate)
Integrations18 integrations: Astra DB, Apache Cassandra, Apache Kafka, AWS Kinesis, Cloud Storage, Elasticsearch … See all →
PricingFree plan (source)
Websitedocs.datastax.com
Facts checked20 Sep 2026

DataStax Astra Streaming integrations

DataStax Astra Streaming lists 18 integrations on its own site.

  • Astra DB
  • Apache Cassandra
  • Apache Kafka
  • AWS Kinesis
  • Cloud Storage
  • Elasticsearch
  • Google BigQuery
  • ClickHouse
  • MariaDB
  • PostgreSQL
  • SQLite
  • Snowflake
  • Debezium MongoDB
  • Debezium MySQL
  • Debezium Oracle
  • Debezium PostgreSQL
  • Debezium SQL Server
  • Data Generator

See all DataStax Astra Streaming integrations →

Alternatives to DataStax Astra Streaming

See all DataStax Astra Streaming alternatives →

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Featured on iTechGuides

Featured on iTechGuides — DataStax Astra Streaming 8.1/10

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Guides on event streaming platforms

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. How we rank.

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