tree: 91400821f6eda0601630ed1e0a522dc9c1e0009d [path history] [tgz]
  1. .github/
  2. .travis/
  3. all/
  4. bin/
  5. build/
  6. conf/
  7. dashboard/
  8. docker/
  9. kubernetes/
  10. managed-ledger/
  11. protobuf/
  12. pulsar-broker/
  13. pulsar-broker-auth-athenz/
  14. pulsar-broker-common/
  15. pulsar-checksum/
  16. pulsar-client/
  17. pulsar-client-admin/
  18. pulsar-client-auth-athenz/
  19. pulsar-client-cpp/
  20. pulsar-client-kafka-compat/
  21. pulsar-client-tools/
  22. pulsar-common/
  23. pulsar-discovery-service/
  24. pulsar-proxy/
  25. pulsar-spark/
  26. pulsar-storm/
  27. pulsar-testclient/
  28. pulsar-websocket/
  29. pulsar-zookeeper/
  30. pulsar-zookeeper-utils/
  31. site/
  32. src/
  33. .gitignore
  34. .travis.yml
  38. NOTICE
  39. pom.xml


Pulsar is a distributed pub-sub messaging platform with a very flexible messaging model and an intuitive client API.

Main features

  • Horizontally scalable (Millions of independent topics and millions of messages published per second)
  • Strong ordering and consistency guarantees
  • Low latency durable storage
  • Topic and queue semantics
  • Load balancer
  • Designed for being deployed as a hosted service:
    • Multi-tenant
    • Authentication
    • Authorization
    • Quotas
    • Support mixing very different workloads
    • Optional hardware isolation
  • Keeps track of consumer cursor position
  • REST API for provisioning, admin and stats
  • Geo replication
  • Transparent handling of partitioned topics
  • Transparent batching of messages

Build Pulsar


  • Java JDK 1.8
  • Maven

Compile and install:

$ mvn install -DskipTests

Start standalone Pulsar service:

$ bin/pulsar standalone

Check for documentation and examples.


Mailing lists
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Pulsar slack channel at

You can self-register at


Licensed under the Apache License, Version 2.0:

Crypto Notice

This distribution includes cryptographic software. The country in which you currently reside may have restrictions on the import, possession, use, and/or re-export to another country, of encryption software. BEFORE using any encryption software, please check your country's laws, regulations and policies concerning the import, possession, or use, and re-export of encryption software, to see if this is permitted. See for more information.

The U.S. Government Department of Commerce, Bureau of Industry and Security (BIS), has classified this software as Export Commodity Control Number (ECCN) 5D002.C.1, which includes information security software using or performing cryptographic functions with asymmetric algorithms. The form and manner of this Apache Software Foundation distribution makes it eligible for export under the License Exception ENC Technology Software Unrestricted (TSU) exception (see the BIS Export Administration Regulations, Section 740.13) for both object code and source code.

The following provides more details on the included cryptographic software: Pulsar uses the SSL library from Bouncy Castle written by