Apache Pulsar

aid: apache-pulsar
name: Apache Pulsar
description: >-
  Apache Pulsar is a cloud-native, distributed messaging and streaming platform that provides server-to-server messaging with multi-tenancy, high performance, and geo-replication. It combines messaging
  and stream processing in a single platform.
type: Index
position: Consumer
access: 3rd-Party
image: https://kinlane-productions2.s3.amazonaws.com/apis-json/apis-json-logo.jpg
tags:
- Cloud Native
- Messaging
- Multi-Tenant
- Pub-Sub
- Streaming
- Apache
- Open Source
created: '2026-03-16'
modified: '2026-04-19'
url: >-
  https://raw.githubusercontent.com/api-evangelist/apache-pulsar/refs/heads/main/apis.yml
specificationVersion: '0.19'
apis:
- aid: apache-pulsar:apache-pulsar-admin-rest-api
  name: Apache Pulsar Admin REST API
  description: >-
    The Pulsar Admin API provides REST endpoints for managing tenants, namespaces,
    topics, subscriptions, functions, connectors, and cluster configuration.
  humanURL: https://pulsar.apache.org/admin-rest-api/
  baseURL: http://localhost:8080/admin/v2
  tags:
  - Administration
  - Multi-Tenant
  - REST
  properties:
  - type: Documentation
    url: https://pulsar.apache.org/admin-rest-api/
  - type: OpenAPI
    url: openapi/pulsar-admin.yml
- aid: apache-pulsar:apache-pulsar-messaging-api
  name: Apache Pulsar Messaging API
  description: >-
    Pulsar messaging protocol for producing and consuming messages on topics,
    with support for multiple subscription types (Exclusive, Shared, Failover,
    Key_Shared), schema enforcement, and both persistent and non-persistent topics.
  humanURL: https://pulsar.apache.org/docs/next/client-libraries/
  tags:
  - Messaging
  - Pub-Sub
  - Streaming
  properties:
  - type: Documentation
    url: https://pulsar.apache.org/docs/next/client-libraries/
  - type: AsyncAPI
    url: asyncapi/pulsar-messaging.yml
  - type: JSONSchema
    url: json-schema/pulsar-message.json
maintainers:
- FN: Kin Lane
  email: [email protected]
common:
- type: GitHubOrganization
  url: https://github.com/apache/pulsar
- type: Documentation
  url: https://pulsar.apache.org/
- type: SpectralRules
  url: rules/apache-pulsar-spectral-rules.yml
- type: Vocabulary
  url: vocabulary/apache-pulsar-vocabulary.yaml
- type: NaftikoCapability
  url: capabilities/pulsar-workflow.yaml
- type: JSON-LD
  url: json-ld/apache-pulsar-context.jsonld
- type: Features
  data:
  - name: Multi-Tenancy
    description: Native multi-tenancy with tenant and namespace isolation
  - name: Persistent Messaging
    description: Durable message storage with Apache BookKeeper
  - name: Geo-Replication
    description: Built-in geo-replication across data centers and clouds
  - name: Pulsar Functions
    description: Lightweight serverless compute natively integrated with messaging
  - name: Tiered Storage
    description: Offload old data to object storage (S3, GCS) for cost efficiency
  - name: Schema Registry
    description: Built-in schema registry for producers and consumers
  - name: Multiple Subscription Types
    description: Exclusive, Shared, Failover, and Key_Shared subscription modes
- type: UseCases
  data:
  - name: Real-Time Event Streaming
    description: Stream events between microservices with guaranteed delivery
  - name: Message Queue
    description: Use Shared subscription as a traditional message queue
  - name: Event Sourcing
    description: Store and replay event streams for event-driven architectures
  - name: IoT Data Ingestion
    description: Ingest high-volume IoT telemetry into Pulsar topics
- type: Integrations
  data:
  - name: Apache Flink
    description: Pulsar connector for Flink stream processing
  - name: Apache Spark
    description: Spark Streaming integration via Pulsar connector
  - name: Apache Kafka
    description: Kafka-compatible protocol support for migration
  - name: Kubernetes
    description: Native Kubernetes deployment via Helm charts
  - name: Grafana
    description: Built-in metrics exposed to Prometheus and Grafana