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Setup Memcached

Locally

You can run Memcached locally using Docker:

docker run --name my-memcache -d memcached

You can then interact with the server using localhost:11211.

Kubernetes

The easiest way to install Memcached on Kubernetes is by using the Helm chart:

helm install --name memcached stable/memcached

This will install Memcached into the default namespace. To interact with Memcached, find the service with: kubectl get svc memcached.

For example, if installing using the example above, the Memcached host address would be:

memcached.default.svc.cluster.local:11211

Create a Dapr component

The next step is to create a Dapr component for Memcached.

Create the following YAML file named memcached.yaml:

apiVersion: dapr.io/v1alpha1
kind: Component
metadata:
  name: <name>
spec:
  type: state.memcached
  metadata:
  - name: hosts
    value: <REPLACE-WITH-COMMA-DELIMITED-ENDPOINTS> # Required. Example: "memcached.default.svc.cluster.local:11211"
  - name: maxIdleConnections
    value: <REPLACE-WITH-MAX-IDLE-CONNECTIONS> # Optional. default: "2"
  - name: timeout
    value: <REPLACE-WITH-TIMEOUT> # Optional. default: "1000ms"

The above example uses secrets as plain strings. It is recommended to use a secret store for the secrets as described here

Apply the configuration

In Kubernetes

To apply the Memcached state store to Kubernetes, use the kubectl CLI:

kubectl apply -f memcached.yaml

Running locally

The Dapr CLI will automatically create a directory named components in your current working directory with a Redis component. To use Memcached, replace the redis.yaml file with the memcached.yaml above.

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