September 2018
Intermediate to advanced
398 pages
9h 43m
English
Content preview from Scala Programming Projects
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Streaming transactions to Kafka
In this section, we are going to write a program that produces a stream of the BTC/USD transactions that happen in real time. Our program will:
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Subscribe to the WebSocket API of Bitstamp to get a stream of transactions in JSON format.
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For each transaction coming in the stream, it will:
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Deserialize it
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Convert it to the same Transaction case class that we used in BatchProducer in the previous chapter
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Serialize it
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Send it to a Kafka topic
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In the next section, we will use Zeppelin again with Spark Streaming to query the data streamed to the Kafka topic.
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.