## Introduction
**RediStack** (pronounced like "ready stack") is a _non-blocking_ Swift client for [Redis](https://redis.io) built on top of [SwiftNIO](https://github.com/apple/swift-nio).
It communicates over the network using Redis' [**Re**dis **S**eralization **P**rotocol (RESP2)](https://redis.io/topics/protocol).
This library is primarily developed for Redis v5, but is backwards compatible to Redis v3**¹**.
The table below lists the major releases alongside their compatible language, dependency, and Redis versions.
| RediStack Release | [Swift](https://swift.org/download) | [Redis](https://redis.io) | [SwiftNIO](https://github.com/apple/swift-nio) | [SwiftLog](https://github.com/apple/swift-log) | [SwiftMetrics](https://github.com/apple/swift-metrics) |
|:-----------------:|:-----------------------------------:|:-------------------------:|:----------------------------------------------:|:----------------------------------------------:|:------------------------------:|
| `from: "1.0.0-alpha.7"` | 5.0+ | 3.x**¹** < 6.x | 2.x | 1.x | 1.x |
> **¹** _Use of newer Redis features on older Redis versions is done at your own risk. See Redis' release notes for [v5](https://raw.githubusercontent.com/antirez/redis/5.0/00-RELEASENOTES), [v4](https://raw.githubusercontent.com/antirez/redis/4.0/00-RELEASENOTES), and [v3](https://raw.githubusercontent.com/antirez/redis/3.0/00-RELEASENOTES) for what is supported for each version of Redis._
### Supported Operating Systems
**RediStack** runs anywhere that is officially supported by the [Swift project](https://swift.org/download/#releases).
See the [test matrix below for more details](#language-and-platform-test-matrix).
## Installing
To install **RediStack**, just add the package as a dependency in your **Package.swift**.
```swift
dependencies: [
.package(url: "https://gitlab.com/mordil/swift-redi-stack.git", from: "1.0.0-alpha.5")
]
```
## Getting Started
**RediStack** is quick to use - all you need is an [`EventLoop`](https://apple.github.io/swift-nio/docs/current/NIO/Protocols/EventLoop.html) from **SwiftNIO**.
```swift
import NIO
import RediStack
let eventLoop: EventLoop = ...
let connection = RedisConnection.connect(
to: try .init(ipAddress: "127.0.0.1", port: RedisConnection.defaultPort),
on: eventLoop
).wait()
let result = try connection.set("my_key", to: "some value")
.flatMap { return connection.get("my_key") }
.wait()
print(result) // Optional("some value")
```
> _**Note**: Use of `wait()` was used here for simplicity. Never call this method on an `eventLoop`!_
## Documentation
The docs for the latest tagged release are always available at [docs.redistack.info](http://docs.redistack.info).
## Questions
For bugs or feature requests, file a new [issue](https://gitlab.com/mordil/swift-redi-stack/issues).
For all other support requests, please email [support@redistack.info](mailto:support@redistack.info).
## Changelog
[SemVer](https://semver.org/) changes are documented for each release on the [releases page](https://gitlab.com/Mordil/swift-redi-stack/-/releases).
## Contributing
Check out [CONTRIBUTING.md](https://gitlab.com/Mordil/swift-redi-stack/blob/master/CONTRIBUTING.md) for more information on how to help with **RediStack**.
## Contributors
Check out [CONTRIBUTORS.txt](https://gitlab.com/Mordil/swift-redi-stack/blob/master/CONTRIBUTORS.txt) to see the full list. This list is updated for each release.
## Swift on Server Ecosystem
**RediStack** is part of the [Swift on Server Working Group](https://github.com/swift-server/sswg) ecosystem - currently recommended as [**Sandbox Maturity**](https://github.com/swift-server/sswg/blob/master/process/incubation.md#sandbox-level).
| Proposal | Pitch | Discussion | Review | Vote |
|:---:|:---:|:---:|:---:|:---:|
| [SSWG-0004](https://github.com/swift-server/sswg/blob/master/proposals/0004-nio-redis.md) | [2019-01-07](https://forums.swift.org/t/swiftnio-redis-client/19325) | [2019-04-01](https://forums.swift.org/t/discussion-nioredis-nio-based-redis-driver/22455) | [2019-06-09](https://forums.swift.org/t/feedback-redisnio-a-nio-based-redis-driver/25521) | [2019-06-27](https://forums.swift.org/t/june-27th-2019/26580) |
## Language and Platform Test Matrix
The following table shows the combination of Swift language versions and operating systems that
receive regular unit testing (either in development, or with CI).
| Platform | Swift 5 | 5.1 | 5.2 | Trunk |
|:---------|:-------:|:---:|:---:|:-----:|
| macOS Latest | | :white_check_mark: | | |
| Ubuntu 18.04 (Bionic) | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: |
| Ubuntu 16.04 (Xenial) | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: |
## License
[Apache 2.0](https://gitlab.com/Mordil/swift-redi-stack/blob/master/LICENSE.txt)
Copyright (c) 2019-present, Nathan Harris (@mordil)
_This project contains code written by others not affliated with this project. All copyright claims are reserved by them. For a full list, with their claimed rights, see [NOTICE.txt](https://gitlab.com/Mordil/swift-redi-stack/blob/master/NOTICE.txt)_
_**Redis** is a registered trademark of **Redis Labs**. Any use of their trademark is under the established [trademark guidelines](https://redis.io/topics/trademark) and does not imply any affiliation with or endorsement by them, and all rights are reserved by them._
_**Swift** is a registered trademark of **Apple, Inc**. Any use of their trademark does not imply any affiliation with or endorsement by them, and all rights are reserved by them._
