1. Redis

Redis using Lettuce library.

1.1. Usage

1) Add the dependency:

Maven
Gradle
<dependency>
  <groupId>io.jooby</groupId>
  <artifactId>jooby-redis</artifactId>
  <version>4.0.11</version>
</dependency>

2) Set redis property

application.conf
redis = "redis://localhost:6379"

3) Install and use Redis

Java
Kotlin
import io.jooby.redis.RedisModule;
import io.lettuce.core.api.StatefulRedisConnection;

{
  install(new RedisModule());                                               (1)

  get("/", ctx -> {
    StatefulRedisConnection redis = require(StatefulRedisConnection.class); (2)
    // work with redis
  });
}
1 Install Redis
2 Use Redis

The io.lettuce.core.pubsub.StatefulRedisPubSubConnection is also available.

1.2. Redis URI

Redis URI are allowed to pass it directly or from application configuration file:

{
   new RedisModule("redis://localhost:6379");
}

Or read it from configuration:

{
   new RedisModule("redis");
}

Either redis or redis.uri must be present in your application configuration file and must be a valid Redis URI.

1.3. Multiple Connections

Support for multiple connection is done using multiple configuration keys:

Java
Kotlin
import io.jooby.redis.RedisModule;
import io.lettuce.core.api.StatefulRedisConnection;

{
  install(new RedisModule("foo"));

  install(new RedisModule("bar"));

  get("/", ctx -> {
    StatefulRedisConnection foo = require(StatefulRedisConnection.class, "foo");
    // work with redis
  });
}

Where foo and bar are redis URI in your application configuration file:

application.conf
foo = "redis://server1:6379"

bar = "redis://server2:6379"

1.4. HTTP Session

The Redis module provides a HTTP Session Store.

Usage
Java
Kotlin
import io.jooby.redis.RedisModule;
import io.jooby.redis.RedisSessionStore;

import io.lettuce.core.RedisClient;

{
  install(new RedisModule());                                                                    (1)

  setSessionStore(new RedisSessionStore(Cookie.session("myappid"), require(RedisClient.class))); (2)

  get("/", ctx -> {
    Session httpSession = ctx.session();                                                         (3)
    // HTTP session is backed by Redis
  });
}
1 Install Redis module
2 Configure session store to use Redis
3 Session data is persisted in Redis

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