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Pulsar APIs

Pulsar is a messaging and streaming platform that scales across organizations of all sizes.

As the core building blocks of Pulsar, Pulsar APIs allow you to:

  • build applications with Pulsar using client APIs
  • administer Pulsar clusters using admin APIs

Pulsar APIs - Definition

Pulsar client APIs

Pulsar client APIs encapsulate and optimize Pulsar's client-broker communication protocols and add additional features using Pulsar primitives.

With Pulsar client APIs, you can:

  • create and configure producers, consumers, and readers
  • produce and consume messages
  • perform authentication and authorization tasks

Client APIs - Definition

Pulsar exposes client APIs with language bindings. For more details about Pulsar clients, including language-specific client libraries, feature matrix, third-party clients, see Pulsar client - Overview.

Pulsar admin APIs

See Pulsar admin API - Overview.


Here is a simple comparison between Pulsar client APIs and Pulsar admin APIs.

CategoryPulsar client APIsPulsar admin APIs
GoalsBuild applications with PulsarAdminister Pulsar clusters
Use casesPulsar client APIs help you create applications that rely on real-time data.

For example, you can build a financial application to handle fraud alerts or an eCommerce application that creates recommendations based on user activities.
Pulsar administration APIs let you administer the entire Pulsar instance, including clusters, tenants, namespaces, and topics, from a single endpoint.

For example, you can configure security and compliance, or get information about brokers, check for any issues, and then troubleshoot solutions.
Key features- Process data with producers, consumers, readers, and TableView

- Secure data with authentication and authorization

- Protect data with transactions and schema

- Stabilize data with cluster-level auto failover
- Configure authentication and authorization

- Set data retention and resource isolation policies

- Facilitate workflow of application development

- Troubleshoot Pulsar
Interfaces- Java client API

- C++ client API

- Python client API

- Go client API

- Node.js client API

- WebSocket client API

- C# client API
- Java admin API