January 2018
Intermediate to advanced
336 pages
7h 56m
English
Content preview from Microservices with Clojure
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Observer model
The observer model uses a message broker (https://en.wikipedia.org/wiki/Message_broker) at its core to send messages among microservices. A message broker provides content and topic-based routing using the publish-subscribe pattern (https://en.wikipedia.org/wiki/Publish-subscribe_pattern), which makes the sender and receiver independent of each other. All observing microservices subscribe to one or more topics through which they can receive the messages and also connect to topics on which they can publish the messages for other observers. All interactions done via message brokers are asynchronous in nature and do not block the sender. This helps in scaling both the publishers and subscribers independently. A microservices architecture ...
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