Monix

Asynchronous Programming for Scala and Scala.js.

Overview

Monix is a high-performance Scala / Scala.js library for composing asynchronous and event-based programs, exposing high-level types, such as observable sequences that are exposed as asynchronous streams, expanding on the observer pattern, strongly inspired by ReactiveX and by Scalaz, but designed from the ground up for back-pressure and made to cleanly interact with Scala’s standard library, compatible out-of-the-box with the Reactive Streams protocol.

Highlights:

• exposes the kick-ass Observable, Task and Coeval
• modular, only use what you need
• the base library has no third-party dependencies
• strives to be idiomatic Scala and encourages referential transparency, but is built to be faster than alternatives
• is a Typelevel project
• designed for true asynchronicity, running on both the JVM and Scala.js
• really good test coverage and API documentation as a project policy

Featured presentation:

flatMap(Oslo), 2016

Download and Usage

The packages are published on Maven Central.

• Current 2.x release: 2.3.0 (download source archive)

In SBT (use the %%% for Scala.js):

libraryDependencies += "io.monix" %% "monix" % "2.3.0"

Monix 2.0 is modular by design, so you can pick and choose:

• monix-execution: the low-level execution environment, or more precisely Scheduler, Cancelable, CancelableFuture and Atomic
• monix-eval: for controlling evaluation by means of Task, Coeval and primitives built on them
• monix-reactive: async Observable streams
• monix: provides all of the above

Optional integrations:

• monix-cats: exposes Typelevel Cats type-class instances, see the intro
• monix-scalaz-72: exposes Scalaz type-class instances, see the intro

Head over to Usage in SBT and Maven for more details.

Documentation

Links:

• Latest 1.x ScalaDoc (old Monifu)
• Latest 2.x ScalaDoc
• 2.x documentation and tutorials

Please contribute!

Latest News

1. 03 May 2017 » Monix: Version 2.3.0, New Features, Bug Fixes
2. 27 Mar 2017 » Monix: Version 2.2.4, Bug Fixes, Upgraded Scala.js
3. 10 Mar 2017 » Monix: Critical Bug Fix in Version 2.2.3 for Scala 2.12
4. 22 Feb 2017 » Monix: Version 2.2.2 Released
5. 26 Jan 2017 » Monix: Version 2.2.1 Final Release

Acknowledgements

YourKit supports the Monix project with its full-featured Java Profiler. YourKit, LLC is the creator YourKit Java Profiler and YourKit .NET Profiler, innovative and intelligent tools for profiling Java and .NET applications.

Development of Monix has been initiated by Eloquentix engineers, with Monix being introduced at E.ON Connecting Energies, powering the next generation energy grid solutions.