Apache Pulsar vs TIBCO Messaging Schema Repository for Apache Kafka

Apache Pulsar is a free, open-source distributed messaging and streaming platform built for cloud use. It supports message consumption with less than 10 ms latency and up to one million unique topics in a cluster. Configurable replication across geographic regions and automatic client failover to healthy clusters support multi-region deployments. Tenants and policies control access to data and actions, and can isolate brokers to limit noisy-neighbor effects. Maintained client libraries are available for Java, Go, Python, C++, Node.js, and C#. Built-in connectors move data to and from systems including Kafka, RabbitMQ, MySQL, PostgreSQL, MongoDB, Cassandra, and Elasticsearch. Pulsar Functions process messages with user-defined logic in Java, Python, or Go. Tiered storage can offload data from BookKeeper to blob storage such as S3 for unlimited retention. It can run in Docker or Kubernetes, with a Helm chart for Kubernetes. Encryption, authentication, and authorization are available but are not enabled by default. The 5.0.0-M2 milestone is for early testing and feedback, not production use.

TIBCO Messaging Schema Repository for Apache Kafka is a REST service for registering and managing Apache Avro JSON schemas used by producer applications and consumer applications. It checks compatibility as schemas evolve and keeps schema versions available so applications can use the message format they need. Compatibility settings include backward, forward, and full policies, their transitive variants, and none; BACKWARD is the default. OAuth2 roles control REST operations by default, with restrictions configurable to the subject level. The repository provides OpenAPI documentation and interactive queries through Swagger UI, and Kafka clients and brokers can use it to manage Avro schemas. TIBCO Enterprise Message Service Kafka transports can also retrieve schemas for deserializing imported Kafka payloads. TIBCO FTL is required for storage. Version 2.0.0 has 64-bit Intel Linux packages and a 64-bit Intel macOS installer, though macOS x86-64 support is marked deprecated. The Community Edition is free for up to 100 application instances or 1,000 web/mobile instances in production, without TIBCO Support. Version 2.0.0 support ends April 30, 2027.