September 2017
Beginner to intermediate
360 pages
8h 13m
English
book
Practical Real-time Data Processing and Analytics
by Shilpi Saxena, Selva raj Ramasamy, Prateek Bhati, Saurabh Gupta
Content preview from Practical Real-time Data Processing and Analytics
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Headers exchanges
This exchange actually publishes the messages to specific queues by matching the message headers with the binding queue headers. These exchanges hold a very strong similarity to the topic based exchange, but they differ in the concept that they have more than one matching criteria with complex ordered conditions:
The message published in the previous exchange has a key ("key1") associated with it which maps to the value ("value1"); the exchange matches it against all the bindings in queue headers and the criteria actually matches with the first header value in the first queue which maps to "key1", "value1" and thus the message ...
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