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Pulsar Overview | Apache Pulsar Concepts and Architecture Overview On this page
Pulsar is a multi-tenant, high-performance solution for server-to-server messaging. Originally developed by Yahoo, Pulsar is under the stewardship of the Apache Software Foundation .
Key features of Pulsar are listed below:
Native support for multiple clusters in a Pulsar instance, with seamless geo-replication of messages across clusters.
Very low publish and end-to-end latency.
Seamless scalability to over a million topics.
A simple client API with bindings for Java , Go , Python and C++ .
Multiple subscription types (exclusive , shared , and failover ) for topics.
Guaranteed message delivery with persistent message storage provided by Apache BookKeeper .
A serverless light-weight computing framework Pulsar Functions offers the capability for stream-native data processing.
A serverless connector framework Pulsar IO , which is built on Pulsar Functions, makes it easier to move data in and out of Apache Pulsar.
Tiered Storage offloads data from hot/warm storage to cold/long-term storage (such as S3 and GCS) when the data is aging out.
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