September 2018
Intermediate to advanced
398 pages
9h 43m
English
Content preview from Scala Programming Projects
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Subscribing with Pusher
Go to Bitstamp's WebSocket API for live transactions: https://www.bitstamp.net/websocket/.
You will see that this API uses a tool called Pusher channels for real-time WebSocket streaming. The API documentation provides a Pusher Key that we need to use to receive live transactions.
Pusher channels is a hosted solution for delivering a stream of messages using a publish/subscribe pattern. You can find out more on their website: https://pusher.com/features.
Let's try to use Pusher to receive some live BTC/USD transactions. Open the project bitcoin-analyser, start a new Scala console, and type the following:
import com.pusher.client.Pusherimport com.pusher.client.channel.SubscriptionEventListenerval pusher = new Pusher ...
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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.