arosien
commented
4 years ago Training
- Essential Effects, Inner Product LLC.
This course introduces Cats Effect as a tool for building resource-safe and concurrent applications.
Cats Effect is a library that makes it easy to write code that effectively uses multiple cores and doesn’t leak resources. This makes building complex applications, such as highly concurrent services, much more productive. This course aims to introduce the core concepts in Cats Effect, giving you the knowledge you need to go further with the library in your own applications. This course is not, however, a detailed dive into every aspect of Cats Effect. Our aim is to cover everything you need to know and set you up so you can rapidly learn additional details on your own if needed.
Books
- Essential Effects, Adam Rosien. (forthcoming)
How to safely create, compose, and execute effectful Scala programs using the Typelevel cats-effect library.
cats-effect is a library that makes it easy to write code that effectively uses multiple cores and doesn’t leak resources. This makes building complex applications, such as highly concurrent services, much more productive. This book aims to introduce the core concepts in cats-effect, giving you the knowledge you need to go further with the library in your own applications.
- Practical FP in Scala: A hands-on approach, Gabriel Volpe.
A practical book aimed for those familiar with functional programming in Scala who are yet not confident about architecting an application from scratch.
Together, we will develop a purely functional application using the best libraries in the Cats ecosystem, while learning about design patterns and best practices.
Posts
- What is an Effect?, Adam Rosien, Inner Product LLC.
We often use the term effect when talking about the behavior of our code. But what is an effect? Can we talk about effects in precise ways, in order to write better programs that we can better understand?
- Time traveling in tests with Cats Effect, Krzysztof Ciesielski, SoftwareMill.
Timeouts, retries, and other error scenarios while testing.
Videos
- Intro to Cats-Effect (slides), Gavin Bisesi.
Cats Effect is a functional side effect library - Gavin Bisesi explains what that means, what it gives you, how to use it, and why you should care.
Teikametrics adopted this library last year, and in this talk Gavin discusses how they approach application design using it, both from a green field perspective as well as the techniques used to migrate a living codebase away from akka-streams without "the big rewrite".
- Cats Effect: The IO Monad for Scala (slides), Gabriel Volpe.
Come join me and learn how to deal with side effects in a pure functional way while abstracting over the effect type and taking composition to the next level. We will review the most important features such as synchronous and asynchronous computations, error handling, safe resource management, concurrency, parallelism and cancellation starting by reviewing the basic concepts.
- Composable concurrency with Ref + Deferred, Fabio Labella at Scala Italy 2019. (Note:
RefandDeferredcome fromcats-effect.)fs2 offers a very powerful and composable set of concurrent combinators and data structures, which are all built out of two deceptively simple primitives: Ref and Deferred.
This talk will explain what they are, the design principles behind them, and how to use them to build your own business logic abstractions. In the process, we will discover a general pattern in the form of concurrent state machines, and see how it integrates with final tagless on one hand, and streaming control flow on the other.
If you have ever wondered how to translate that complicated piece of actor logic in pure FP, or how fs2’s Queues, Topics and Signals work under the hood, this is the talk for you.
mpilquist
gvolpe
djspiewak
RaasAhsan
daniel-ciocirlan
TimWSpence
As we're transitioning to a new documentation site, we should include links to third-party educational resources for Cats Effect to make them more accessible to users. Things like books, blog posts, trainings, videos, gists, etc. We should try to compile a list of them here.