Memcached is an in-memory key-value store for small chunks of arbitrary data (strings, objects) from results of database calls, API calls, or page rendering.

memcached.org

docker run --name memcached bitnami/memcached:latest

memcached:
  image: bitnami/memcached:latest

The recommended way to get the Bitnami Memcached Docker Image is to pull the prebuilt image from the Docker Hub Registry.

docker pull bitnami/memcached:latest

To use a specific version, you can pull a versioned tag. You can view the list of available versions in the Docker Hub Registry.

docker pull bitnami/memcached:[TAG]

If you wish, you can also build the image yourself.

docker build -t bitnami/memcached:latest https://github.com/bitnami/bitnami-docker-memcached.git

If you want to connect to your Memcached server inside another container, you can use the linking system provided by Docker.

The first step is to start our Memcached server.

Docker's linking system uses container ids or names to reference containers. We can explicitly specify a name for our Memcached server to make it easier to connect to other containers.

docker run --name memcached bitnami/memcached:latest

Now that we have our Memcached server running, we can create another container that links to it by giving Docker the --link option. This option takes the id or name of the container we want to link it to as well as a hostname to use inside the container, separated by a colon. For example, to have our Memcached server accessible in another container with memcached as it's hostname we would pass --link memcached:memcached to the Docker run command.

docker run -it --link memcached:memcached myapp

Inside myapp, use memcached as the hostname for the Memcached server.

Copy the snippet below into your docker-compose.yml to add Memcached to your application.

memcached:
  image: bitnami/memcached

Update the definitions for containers you want to access your Memcached server from to include a link to the memcached entry you added in Step 1.

myapp:
  image: myapp
  links:
    - memcached:memcached

Authentication on the Memcached server is disabled by default. To enable authentication, specify a username and password for the Memcached admin user using the MEMCACHED_USER and MEMCACHED_PASSWORD environment variables.

docker run --name memcached \
  -e MEMCACHED_USER=my_user \
  -e MEMCACHED_PASSWORD=my_password \
  bitnami/memcached:latest

or using Docker Compose:

memcached:
  image: bitnami/memcached:latest
  environment:
    - MEMCACHED_USER=my_user
    - MEMCACHED_PASSWORD=my_password

The default value of the MEMCACHED_USER is root.

The Bitnami Memcached Docker image sends the container logs to the stdout. To view the logs:

docker logs memcached

or using Docker Compose:

docker-compose logs memcached

You can configure the containers logging driver using the --log-driver option if you wish to consume the container logs differently. In the default configuration docker uses the json-file driver.

Bitnami provides up-to-date versions of Memcached, including security patches, soon after they are made upstream. We recommend that you follow these steps to upgrade your container.

docker pull bitnami/memcached:latest

or if you're using Docker Compose, update the value of the image property to bitnami/memcached:latest.

docker rm -v memcached

or using Docker Compose:

docker-compose rm -v memcached

Re-create your container from the new image.

docker run --name memcached bitnami/memcached:latest

or using Docker Compose:

docker-compose start memcached

This image is tested for expected runtime behavior, using the Bats testing framework. You can run the tests on your machine using the bats command.

bats test.sh

• The logs are always sent to the stdout and are no longer collected in the volume.

We'd love for you to contribute to this container. You can request new features by creating an issue, or submit a pull request with your contribution.

If you encountered a problem running this container, you can file an issue. For us to provide better support, be sure to include the following information in your issue:

• Host OS and version
• Docker version (docker version)
• Output of docker info
• Version of this container (echo $BITNAMI_APP_VERSION inside the container)
• The command you used to run the container, and any relevant output you saw (masking any sensitive information)

Copyright (c) 2015-2016 Bitnami

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.