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What is Redis?

Redis is an open source, BSD licensed, advanced key-value cache and store. It is often referred to as a data structure server since keys can contain strings, hashes, lists, sets, sorted sets, bitmaps and hyperloglogs.

Usage

You can instantiate a Bitnami Redis container by doing:

HOST_REDIS_CONF_DIR=`pwd`/redis/conf
HOST_REDIS_DATA_DIR=`pwd`/redis/data
CONTAINER_REDIS_SERVER_NAME=redis

docker run -it \
  -v $HOST_REDIS_CONF_DIR:/conf \
  -v $HOST_REDIS_DATA_DIR:/data \
  --name $CONTAINER_REDIS_SERVER_NAME
  bitnami/redis

Data

Redis data lives in $HOST_REDIS_DATA_DIR on the host. /data inside the container.

Configuration

redis.cnf

Redis configuration files live in $HOST_REDIS_CONF_DIR on the host and /conf in the container. You can edit the default or place your own redis.conf file in there.

Environment variables

You can specify the REDIS_PASSWORD that will be used the first time you launch the container to setup your redis server.

Linking

You can link redis to a container running your application, e.g., using the Bitnami node container:

CONTAINER_REDIS_LINK_NAME=redis
docker run --rm -it \
    --link $CONTAINER_REDIS_SERVER_NAME:$CONTAINER_REDIS_LINK_NAME bitnami/node \
    npm start --production

Inside your application, use the value of $CONTAINER_REDIS_LINK_NAME when setting the redis host.

Logging

The container is set up to log to stdout, which means logs can be obtained as follows:

docker logs redis

If you would like to log to a file instead, you can mount a volume at /logs.