Can we deploy worker and workflows as separate springboot applications deployed in different pods?

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1

Hi,

We are trying to come up with a workflow using Temporal. I would like to know if we can have the temporal worker as a springboot application deployed in say 2/3 pods in cloud and another springboot application as the workflow deployed in 1/2 pods. If so how do they communicate? How I can register the workflow class in the worker? Do you have any examples ?

2

Your workers execute your workflow and activity code so workers should have dependency on it (you don’t deploy them separately if that’s the question, you could develop your wf/act code as a library that then worker project uses as dependency).

3

Thanks for the reply. “you don’t deploy them separately” This is what I wanted to confirm.

4

Hi I have one more query, If say we have a workflow which is running for 2/3 months and in between we have to update the workflow to a new version. How do we achieve this? If we deploy the new version, the previous process may get stuck in between right?

5

Use getVersion, which allows updating workflows inflight.

6

Thanks we will try it out. One more clarification. When you say a Temporal workflow, does it include worker, workflow with activities and the initiator class? Are these a single unit? Or can I separate out initiator? and the rest of them as separate applications?

7

Yes, workflows can be started from a separate process. See the money transfer sample.

8

Hi, When we are trying to connect to CosmosDB Cassandra, we are getting the following error.

gocql: unable to dial control conn 23.98.107.224:10350: gocql: no response to connection startup within timeout
2023-06-07T05:36:56.759Z ERROR Connection validation failed. {“error”: “gocql: unable to create session: unable to connect to initial hosts: gocql: no response to connection startup within timeout”, “logging-call-at”:
“cqlclient.go:119”}
2023-06-07T05:36:56.759Z ERROR Unable to create keyspace. {“error”: “gocql: unable to create session: unable to connect to initial hosts: gocql: no response to connection startup within timeout”, “logging-call-at”:
“handler.go:104”}

Can you let us know what is the issue?

9

Hi,
I came across a spring boot demo for Temporal.

In this example, i am not seeing any worker. instead a @WorkflowImpl(taskQueues = “DemoTaskQueue”).
Does it mean that a separate worker is not required here? And how do we initiate this workflow? do we have another java application where we have a jar containing the workflow interface in the path?

10

Hi, When we are trying to connect to CosmosDB Cassandra, we are getting the following error.

I don’t think CosmosDB Cassandra is going to work. You can try, but the last time we checked it missed some important features of the native Cassandra.

11

Thanks for the update.