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Scala Programming Projects

You're reading from   Scala Programming Projects Build real-world projects using popular Scala frameworks such as Play, Akka, and Spark

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Product type Paperback
Published in Sep 2018
Publisher Packt
ISBN-13 9781788397643
Length 398 pages
Edition 1st Edition
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Authors (2):
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Mikael Valot Mikael Valot
Author Profile Icon Mikael Valot
Mikael Valot
Nicolas Jorand Nicolas Jorand
Author Profile Icon Nicolas Jorand
Nicolas Jorand
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Toc

Table of Contents (13) Chapters Close

Preface 1. Writing Your First Program FREE CHAPTER 2. Developing a Retirement Calculator 3. Handling Errors 4. Advanced Features 5. Type Classes 6. Online Shopping - Persistence 7. Online Shopping - REST API 8. Online Shopping - User Interface 9. Interactive Browser 10. Fetching and Persisting Bitcoin Market Data 11. Batch and Streaming Analytics 12. Other Books You May Enjoy

Summary


By now, you should be more comfortable using Spark's Dataset API. Our little program is focused on fetching BCT/USD transactions, but it could be interesting to enhance it. For instance, you could fetch and save other currency pairs, such as ETH/EUR or XRP/USD. Use a different cryptocurrency exchange. This would allow you to compare prices in different exchanges, and possibly work out an arbitrage strategy. Arbitrage is a simultaneous purchase and sale of an asset in different marketplaces to profit from an imbalance in the price. You could get data for traditional currency pairs, such as EUR/USD, or use Frameless to refactor the Dataset manipulations and make them more type-safe. See the website for further clarification https://github.com/typelevel/frameless.

In the next chapter, we are going to exploit saved transaction data to perform some analytics queries.

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