Provides low-latency message delivery
Fault tolerance capability
Messaging types
- Point to point (Messages are persisted in a Queue. Only one consumer can consume a particular message)
- Publish-subscribe (pub-sub)
- Messages are persisted in a topic.
- Message producer = publisher
- Message consumer = subscriber
- Consumers can subscribe to more than one topic and consume all messages in that topic
Scala ( SCAlable LAnguage)
- runs on JVM
- Scala compiler complies the Scala code into java byte code
- The compiled bytecode can be run using "scala" command
- All data types of scala are considered objects
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