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Hazelcast

Detailed documentation on the Hazelcast pubsub component

Component format

To setup hazelcast pubsub create a component of type pubsub.hazelcast. See this guide on how to create and apply a pubsub configuration.

apiVersion: dapr.io/v1alpha1
kind: Component
metadata:
  name: hazelcast-pubsub
  namespace: default
spec:
  type: pubsub.hazelcast
  version: v1
  metadata:
  - name: hazelcastServers
    value: "hazelcast:3000,hazelcast2:3000"

Spec metadata fields

Field Required Details Example
connectionString Y A comma delimited string of servers. Example: “hazelcast:3000,hazelcast2:3000” "hazelcast:3000,hazelcast2:3000"
backOffMaxRetries N The maximum number of retries to process the message before returning an error. Defaults to "0" which means the component will not retry processing the message. "-1" will retry indefinitely until the message is processed or the application is shutdown. And positive number is treated as the maximum retry count. The component will wait 5 seconds between retries. "3"

Create a Hazelcast instance


You can run Hazelcast locally using Docker:

docker run -e JAVA_OPTS="-Dhazelcast.local.publicAddress=127.0.0.1:5701" -p 5701:5701 hazelcast/hazelcast

You can then interact with the server using the 127.0.0.1:5701.


The easiest way to install Hazelcast on Kubernetes is by using the Helm chart.