Pulsar open source message queue_ Understand pulsar --- pulsar work notes 001

1.pulsar It's open source.

2.Pulsar from Yahoo！ stay 2013 Created in , And in 2016 Donated to Apache  The foundation .Pulsar Now it is Apache Top projects at the software foundation

3.Pulsar Very flexible ： It can be applied to things like kafka Such a distributed log application scenario , It can also be applied to things like RabbitMQ Such a pure messaging system scenario .
New message queue
Set up Kafka and rabbitmq The advantages of

4.Pulsar

• It is the next generation cloud native distributed message flow platform .
• Pulsar A single instance of native supports multiple clusters , It can seamlessly complete message replication between clusters across machine rooms .
• Very low release latency and end-to-end latency .
• Seamlessly scale to over a million topic.
• Simple client API, Support Java、Go、Python and C++.
• Multiple subscription modes for topics （ Monopoly 、 Sharing and fail over ）.
• adopt Apache BookKeeper A persistent message storage mechanism is provided to ensure message delivery .
• By lightweight serverless Computing framework Pulsar Functions Implementation of native data stream processing .
• be based on Pulsar Functions Of serverless connector frame Pulsar IO Make it easier to move data into 、 Removed from the Apache Pulsar.
• Tiered storage when data is stale , Unload data from hot storage to cold storage / Long term storage （ Such as S3、GCS） in .