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https://github.com/KarelCemus/play-redis

Play framework 2 cache plugin as an adapter to redis-server
https://github.com/KarelCemus/play-redis

asynchronous play-cache play-framework play-redis playframework reactive redis-cache scala

Last synced: 3 months ago
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Play framework 2 cache plugin as an adapter to redis-server

Host: GitHub
URL: https://github.com/KarelCemus/play-redis
Owner: KarelCemus
License: mpl-2.0
Created: 2015-02-21T18:59:01.000Z (over 9 years ago)
Default Branch: master
Last Pushed: 2024-05-07T10:26:27.000Z (6 months ago)
Last Synced: 2024-05-07T15:30:45.375Z (6 months ago)
Topics: asynchronous, play-cache, play-framework, play-redis, playframework, reactive, redis-cache, scala
Language: Scala
Size: 1.14 MB
Stars: 164
Watchers: 14
Forks: 42
Open Issues: 0
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- License: LICENSE.md
- Code of conduct: CODE_OF_CONDUCT.md

Awesome Lists containing this project

awesome-playframework - Redis Cache module - Play framework 2 cache plugin as an adapter to redis-server (Libraries / Databases)

README

        


  # Redis Cache module for Play framework

  **This version supports Play framework 3.0.x with JDK 11 and Scala 2.13 and Scala 3.**


  **For previous versions see older releases.**

  [![Travis CI: Status](https://travis-ci.org/KarelCemus/play-redis.svg?branch=master)](https://travis-ci.org/KarelCemus/play-redis)

  [![Coverage Status](https://coveralls.io/repos/github/KarelCemus/play-redis/badge.svg?branch=master)](https://coveralls.io/github/KarelCemus/play-redis?branch=master)

  [![Maven Central](https://maven-badges.herokuapp.com/maven-central/com.github.karelcemus/play-redis_2.13/badge.svg)](https://maven-badges.herokuapp.com/maven-central/com.github.karelcemus/play-redis_2.13)



## About the Project

[Play framework](https://playframework.com/) is delivered with

[SyncCacheApi and AsyncCacheApi](https://playframework.com/documentation/2.8.x/ScalaCache).

This module provides **implementation of a cache over Redis** server, i.e., key/value storage.

Besides the compatibility with all Play's cache APIs,

it introduces more evolved API providing lots of handful

operations. Besides the basic methods such as `get`, `set`

and `remove`, it provides more convenient methods such as

`expire`, `exists`, `invalidate` and much more.

The implementation builds on the top of Pekko actor system,

it is **completely non-blocking and asynchronous** under

the hood, though it also provides blocking APIs to ease

the use. Furthermore, the library supports several configuration

providers to let you easily use `play-redis` on localhost, Heroku,

as well as on your premise.

## Features

- [synchronous and asynchronous APIs](#provided-apis)

- [implements standard APIs defined by Play's `cacheApi` project](#provided-apis)

- support of [named caches](https://github.com/KarelCemus/play-redis/blob/5.0.0/doc/20-configuration.md#named-caches)

- [works with Guice](https://github.com/KarelCemus/play-redis/blob/5.0.0/doc/40-migration.md#runtime-time-dependency-injection) as well as [compile-time DI](https://github.com/KarelCemus/play-redis/blob/5.0.0/doc/40-migration.md#compile-time-dependency-injection)

- [getOrElse and getOrFuture operations](https://github.com/KarelCemus/play-redis/blob/5.0.0/doc/30-how-to-use.md#use-of-cacheapi) easing the use

- [wildcards in remove operation](https://github.com/KarelCemus/play-redis/blob/5.0.0/doc/30-how-to-use.md#use-of-cacheapi)

- support of collections: [sets](https://github.com/KarelCemus/play-redis/blob/5.0.0/doc/30-how-to-use.md#use-of-sets), [lists](https://github.com/KarelCemus/play-redis/blob/5.0.0/doc/30-how-to-use.md#use-of-lists), and [maps](https://github.com/KarelCemus/play-redis/blob/5.0.0/doc/30-how-to-use.md#use-of-maps)

- [increment and decrement operations](https://github.com/KarelCemus/play-redis/blob/5.0.0/doc/30-how-to-use.md#use-of-cacheapi)

- [eager and lazy invocation policies](https://github.com/KarelCemus/play-redis/blob/5.0.0/doc/20-configuration.md#eager-and-lazy-invocation) waiting or not waiting for the result

- several [recovery policies](https://github.com/KarelCemus/play-redis/blob/5.0.0/doc/20-configuration.md#recovery-policy) and possibility of further customization

- support of [several configuration sources](https://github.com/KarelCemus/play-redis/blob/5.0.0/doc/20-configuration.md#running-in-different-environments)

    - static in the configuration file

    - from the connection string optionally in the environmental variable

    - custom implementation of the configuration provider

- support of [standalone, cluster,](https://github.com/KarelCemus/play-redis/blob/5.0.0/doc/20-configuration.md#standalone-vs-cluster)

  [aws-cluster,](https://github.com/KarelCemus/play-redis/blob/5.0.0/doc/20-configuration.md#aws-cluster)

  and [sentinel modes](https://github.com/KarelCemus/play-redis/blob/5.0.0/doc/20-configuration.md#sentinel)

- build on the top of Pekko actors and serializers, [agnostic to the serialization mechanism](https://github.com/KarelCemus/play-redis/blob/5.0.0/doc/20-configuration.md#limitation-of-data-serialization)

    - for simplicity, it uses deprecated Java serialization by default

      - it is recommended to use [Kryo library](https://github.com/romix/akka-kryo-serialization) or any other mechanism

## Provided APIs

This library delivers a single module with following implementations of the API. While the core

of the framework is **fully non-blocking**, most of the provided facades are **only blocking wrappers**.

|    | Trait                                | Language | Blocking     | Features |

| -- | ------------------------------------ | :------: | :----------: | :------: |

| 1. | `play.api.cache.redis.CacheApi`      | Scala    | *blocking*   | advanced |

| 2. | `play.api.cache.redis.CacheAsyncApi` | Scala    | non-blocking | advanced |

| 3. | `play.cache.redis.AsyncCacheApi`     | Java     | non-blocking | advanced |

| 4. | `play.api.cache.SyncCacheApi`        | Scala    | *blocking*   | basic    |

| 5. | `play.api.cache.AsyncCacheApi`       | Scala    | non-blocking | basic    |

| 6. | `play.cache.SyncCacheApi`            | Java     | *blocking*   | basic    |

| 7. | `play.cache.AsyncCacheApi`           | Java     | non-blocking | basic    |

First, the `CacheAsyncApi` provides extended API to work with Redis and enables **non-blocking**

connection providing results through `scala.concurrent.Future`.

Second, the `CacheApi` is a thin **blocking** wrapper around the asynchronous implementation.

Third, there are other implementations supporting contemporary versions of the `CacheApi`s

bundled within Play framework. Finally, `play-redis` also supports Java version of the API,

though it is primarily **designed for and more efficient with Scala**.

## Documentation and Getting Started

**[The full documentation](https://github.com/KarelCemus/play-redis/)**

is in the `doc` directory. **The documentation for a particular version**

is under [the particular tag in the Git history](https://github.com/KarelCemus/play-redis/releases)

or you can use shortcuts in the table below.

To use this module:

1. [Add this library into your project](https://github.com/KarelCemus/play-redis/blob/5.0.0/doc/10-integration.md) and expose APIs

1. See the [configuration options](https://github.com/KarelCemus/play-redis/blob/5.0.0/doc/20-configuration.md)

1. [Browse examples of use](https://github.com/KarelCemus/play-redis/blob/5.0.0/doc/30-how-to-use.md)

If you come from older version, you might check the [Migration Guide](https://github.com/KarelCemus/play-redis/blob/5.0.0/doc/40-migration.md)

## Samples

To ease the initial learning, there are

[several sample projects](https://github.com/KarelCemus/play-redis-samples)

intended to demonstrate the most common configurations. Feel free

to study, copy or fork them to better understand the `play-redis` use.

1. [**Getting Started**](https://github.com/KarelCemus/play-redis-samples/tree/master/hello_world) is a very basic example showing the

minimal configuration required to use the redis cache

1. [**Named Caches**](https://github.com/KarelCemus/play-redis-samples/tree/master/named_caches) is the advanced example with custom recovery policy and multiple named caches.

1. [**EhCache and Redis**](https://github.com/KarelCemus/play-redis-samples/tree/master/redis_and_ehcache) shows a combination of both caching provides used at once.

While the EhCache is bound to unqualified APIs, the Redis cache uses named APIs.

## How to add the module into the project

To your SBT `build.sbt` add the following lines:

```scala

// enable Play cache API (based on your Play version)

libraryDependencies += play.sbt.PlayImport.cacheApi

// include play-redis library

libraryDependencies += "com.github.karelcemus" %% "play-redis" % "5.0.0"

```

## Compatibility matrix

| play framework |                          play-redis |                                                                                                                                                          documentation |

|----------------|------------------------------------:|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------:|

| 3.0.x          |    5.0.0 |                                                                                              [see here](https://github.com/KarelCemus/play-redis/blob/5.0.0/README.md) |

| 2.9.x          |    3.0.0 |                                                                                             [see here](https://github.com/KarelCemus/play-redis/blob/3.0.0/README.md) |

| 2.8.x          |    2.7.0 |                                                                                              [see here](https://github.com/KarelCemus/play-redis/blob/2.7.0/README.md) |

| 2.7.x          |    2.5.1 |                                                                                              [see here](https://github.com/KarelCemus/play-redis/blob/2.5.1/README.md) |

| 2.6.x          |    2.3.0 | [see here](https://github.com/KarelCemus/play-redis/blob/2.3.0/README.md) ([Migration Guide](https://github.com/KarelCemus/play-redis/blob/2.3.0/doc/40-migration.md)) |

| 2.5.x          |    1.4.2 |                                                                                              [see here](https://github.com/KarelCemus/play-redis/blob/1.4.2/README.md) |

| 2.4.x          |    1.0.0 |                                                                                              [see here](https://github.com/KarelCemus/play-redis/blob/1.0.0/README.md) |

| 2.3.x          |    0.2.1 |                                                                                              [see here](https://github.com/KarelCemus/play-redis/blob/0.2.1/README.md) |

## Contribution

If you encounter any issue, have a feature request, or just

like this library, please feel free to report it or contact me.

## Changelog

For the list of changes and migration guide please see

[the Changelog](https://github.com/KarelCemus/play-redis/blob/5.0.0/CHANGELOG.md).

## Caveat

The library **does not enable** the redis module by default. It is to avoid conflict with Play's default EhCache

and let the user define when use Redis. This allows you to use EhCache in your *dev* environment and

Redis in *production*. You can also combine the modules using named caches.