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https://github.com/monix/monix

Asynchronous, Reactive Programming for Scala and Scala.js.
https://github.com/monix/monix

cats cats-effect fp functional-programming monix reactive-programming reactive-streams reactivex scala typelevel

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Asynchronous, Reactive Programming for Scala and Scala.js.

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# Monix






Asynchronous, Reactive Programming for Scala and [Scala.js](http://www.scala-js.org/).



[![monix Scala version support](https://index.scala-lang.org/monix/monix/monix/latest-by-scala-version.svg)](https://index.scala-lang.org/monix/monix/monix)



[![Build](https://github.com/monix/monix/workflows/build/badge.svg?branch=series/4.x)](https://github.com/monix/monix/actions?query=branch%3Aseries%2F4.x+workflow%3Abuild) [![Gitter](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/monix/monix)

[![Discord](https://img.shields.io/discord/632277896739946517.svg?label=&logo=discord&logoColor=ffffff&color=404244&labelColor=6A7EC2)](https://discord.gg/wsVZSEx4Nw)



- [Overview](#overview)

- [Usage](#usage)

  - [Library dependency (sbt)](#library-dependency-sbt)

  - [Sub-projects](#sub-projects)

- [Documentation](#documentation)

- [Contributing](#contributing)

- [Adopters](#adopters)

- [License](#license)



## Overview



Monix is a high-performance Scala / Scala.js library for composing asynchronous,

event-based programs.



It started as a proper implementation of [ReactiveX](http://reactivex.io/),

with stronger functional programming influences and designed from the ground up

for  back-pressure and made to interact cleanly with Scala's standard library,

compatible out-of-the-box with the [Reactive Streams](http://www.reactive-streams.org/)

protocol. It then expanded to include abstractions for suspending side effects

and for resource handling, and is one of the parents and implementors of

[Cats Effect](https://typelevel.org/cats-effect/).






A [Typelevel project](http://typelevel.org/projects/), Monix proudly

exemplifies pure, typeful, functional programming in Scala, while being pragmatic,

and making no compromise on performance.



Highlights:



- exposes the kick-ass [Observable](https://monix.io/docs/current/reactive/observable.html), 

  [Iterant](https://monix.io/api/current/monix/tail/Iterant.html), 

  [Task](https://monix.io/docs/current/eval/task.html),

  [IO[E, A]](https://bio.monix.io/docs/introduction), and 

  [Coeval](https://monix.io/docs/current/eval/coeval.html) data types,

  along with all the support they need

- *modular*, split into multiple sub-projects, only use what you need

- designed for true asynchronicity, running on both the

  JVM and [Scala.js](http://scala-js.org)

- excellent test coverage, code quality, and API documentation

  as a primary project policy



## Usage



- Use **[monix-jvm-app-template.g8](https://github.com/monix/monix-jvm-app-template.g8)**

for quickly getting started with a Monix-driven app

- See **[monix-sample](https://github.com/monix/monix-sample)** for

a project exemplifying Monix used both on the server and on the client.



### Library dependency (sbt)



For the stable release (compatible with Cats, and Cats-Effect 2.x):

 

```scala

libraryDependencies += "io.monix" %% "monix" % "3.4.1"

```

  

### Sub-projects



Monix 3.x is modular by design. See the [sub-modules graph](https://monix.io/docs/current/intro/usage.html#sub-modules--dependencies-graph):



Sub-modules graph



You can pick and choose:



- `monix-execution` exposes the low-level execution environment, or

  more precisely `Scheduler`, `Cancelable`, `Atomic`, `Local`, `CancelableFuture`

  and `Future` based abstractions from `monix-catnap`.

- `monix-catnap` exposes pure abstractions built on top of

   the [Cats-Effect](https://typelevel.org/cats-effect/) type classes;

   depends on `monix-execution`, Cats 1.x and Cats-Effect

- `monix-eval` exposes `Task`, `Coeval`;

  depends on `monix-execution`

- `monix-reactive` exposes `Observable` for modeling reactive,

  push-based streams with back-pressure; depends on `monix-eval`

- `monix-tail` exposes `Iterant` streams for purely functional pull

  based streaming; depends on `monix-eval` and makes heavy use of

  Cats-Effect

- `monix` provides all of the above



## Documentation



See:



- Website: [Monix.io](https://monix.io/)

- [Documentation (current)](https://monix.io/docs/current/) ([3.x](https://monix.io/docs/3x/))

- [Documentation for 2.x (old)](https://monix.io/docs/2x/)

- [Presentations](https://monix.io/presentations/)



API Documentation:



- [Current](https://monix.io/api/current/) 

- [3.4](https://monix.io/api/3.4/)

- [2.3](https://monix.io/api/2.3/)

- [1.2](https://monix.io/api/1.2/)



([contributions are welcome](https://github.com/monix/monix.io))



Related:



- [Typelevel Cats](https://typelevel.org/cats/)

- [Typelevel Cats-Effect](https://typelevel.org/cats-effect/)



## Contributing



The Monix project welcomes contributions from anybody wishing to

participate. You must license all code or documentation provided 

with the Apache License 2.0, see [LICENSE.txt](./LICENSE.txt).



You must follow the [Scala Code of Conduct](./CODE_OF_CONDUCT.md) when

discussing Monix on GitHub, Gitter channel, or other venues.



Feel free to open an issue if you notice a bug, have an idea for a

feature, or have a question about the code. Pull requests are also

gladly accepted. For more information, check out the

[contributor guide](CONTRIBUTING.md).



If you'd like to donate in order to help with ongoing maintenance:






## Adopters



Here's a (non-exhaustive) list of companies that use Monix in production. Don't see yours? 

Submit a PR ❤️ 

- [PITS Global Data Recovery Services](https://www.pitsdatarecovery.net/)

- [Abacus](https://abacusfi.com)

- [Agoda](https://www.agoda.com)

- [AVSystem](https://www.avsystem.com)

- [commercetools](https://commercetools.com)

- [Coya](https://www.coya.com/)

- [DigitalGenius](https://digitalgenius.com/)

- [E.ON Connecting Energies](https://www.eon.com/)

- [eBay Inc.](https://www.ebay.com)

- [Eloquentix](http://eloquentix.com/)

- [Hypefactors](https://www.hypefactors.com)

- [Iterators](https://www.iteratorshq.com)

- [Netflix](https://netflix.com)

- [Sony Electronics](https://www.sony.com)

- [Tinkoff](https://tinkoff.ru)

- [Zalando](https://www.zalando.com)

- [Zendesk](https://www.zendesk.com)



## License



All code in this repository is licensed under the Apache License,

Version 2.0.  See [LICENSE](./LICENSE.txt).