Master Cats Effect and elevate your Scala programming with our course focused on writing composable, high-performance, purely functional applications. Learn to leverage one of the most powerful libraries in the Scala ecosystem to enhance your coding productivity and effectiveness.
Cats Effect is a Scala library that allows us to write composable and high-performance applications with pure functional programming.
What?!
Cats Effect comes with a powerful tool called the IO monad, which gives us the power to compose any kind of actions, aka “effects”. Besides that, we get great support for concurrency, parallelism and coordination, all with a strongly typed system (it’s Scala of course).
On more general terms, Cats Effect comes with a group of abstractions that make clear distinctions between different kinds of effects, so we can write more composable code.
The end result is more expressive power, higher performance, fewer bugs, less boilerplate, and most importantly, more happiness and productivity for us as Scala engineers.
This is what you’ll learn in this course.
Two words: writing code.
This course is as hands-on as you can get. We learn everything from first principles, not assuming any pre-existing Cats Effect experience, and we build up from there. We discover what effects are, how we can use them, how to compose code, how to design parallel and concurrent applications and how to generalize and make the code modular, all through practical examples. We write 3000 lines of code from scratch.
In this course, we have both theory and practice, so you can not only learn Cats Effect as a tool, but you internalize timeless principles for pure functional programming and high-performance applications.
The course was specifically designed to give you a smooth learning curve by deconstructing Cats Effect and sequencing the topics carefully. Nothing too steep or too boring.
In this Cats Effect course, we go from practice to theory, until pure functional programming gets deep in your bones as a Scala developer.
This course is 100% compatible with Scala 2 and Scala 3.
Make no mistake - Cats Effect can be difficult, and this course is for advanced developers.
Even if you’re experienced, learning Cats Effect on your own can take months (I certainly did when I started). This course will compress your learning time to 2-3 days if you’re committed.
First of all, this course will give you everything you need to be productive with Cats Effect:
After this course, you’ll be able to read and write any code, however complex, that has Scala with Cats Effect in it.
But most importantly, you’ll develop timeless skills that you’ll carry with you for your entire career, regardless of which language or tool you’ll end up using:
I'm a software engineer and the founder of Rock the JVM.
I'm a software engineer and the founder of Rock the JVM. I started the Rock the JVM project out of love for Scala and the technologies it powers - they are all amazing tools and I want to share as much of my experience with them as I can.
As of February 2024, I've taught Java, Scala, Kotlin and related tech (e.g. Cats, ZIO, Spark) to 100000+ students at various levels and I've held live training sessions for some of the best companies in the industry, including Adobe and Apple. I've also taught university students who now work at Google and Facebook (among others), I've held Hour of Code for 7-year-olds and I've taught more than 35000 kids to code.
I have a Master's Degree in Computer Science and I wrote my Bachelor and Master thesis on Quantum Computation. Before starting to learn programming, I won medals at international Physics competitions.
Just the course with a one-time payment
All of the Rock the JVM courses
If you're not happy with this course, I want you to have your money back. If that happens, contact me with a copy of your welcome email and I will refund you the course.
Less than 0.05% of students refunded a course on the entire site, and every payment was returned in less than 72 hours.
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