Hi Temporal Community, I have a workflow that pauses while waiting for an asynchronous downstream operation to complete. The downstream system publishes an event to Kafka once the operation is done, and my service listens to this event and triggers a webhook to send a signal to resume the Temporal …

Workflow.await(() → isPaused || result.get()); I think this should work, the only problem I see is that .get will throw an exception is the activity fails (after all retries are exhausted) . This is another approach Promise<Boolean> result = Async.function(activity::execute); result.the…

@maxim Also my polling frequency will be after every 1 hour.

[image] What is the best practice for a polling activity? Community Support It depends on how frequently you want to poll. For infrequent polls (every minute or slower) use the server side retry. Specify a RetryPolicy (or RetryOptions for Java) when invoking…

@maxim I’m planning to implement periodic polling that runs every hour. My idea is to create a child workflow responsible for polling and notifying the parent workflow once it completes (as provided in samples-java repo), based on the downstream state. Do you see any potential concerns or drawbacks…

@maxim I’m implementing a parent workflow that must do two things at once: Kick off a child workflow that periodically polls some downstream state and returns true when the polling condition is met. Listen for an external signal that can set a workflowPaused flag at any time. Current code (…

Hi, This post shows how to start a child workflow async in Java, Best way to create an async child workflow , sample code here . Something like this should work ChildWorkflow child = Workflow.newChildWorkflowStub(ChildWorkflow.class, childWorkflowOptions); Promise<String> result = Async.function(…

Thanks @antonio.perez . I’m implementing periodic polling as a child workflow, which will be triggered by the parent workflow. In the official Temporal Java samples, the polling logic is implemented directly inside the workflow code. However, that is not a good practice Polling in workflow vs. Acti…

Hi, In the official Temporal Java samples, the polling logic is implemented directly inside the workflow code Could you show me where? note that this is relaying on activity retries , not calling an activity in a loop. I correct in assuming that this approach won’t negatively impact the parent…

@antonio.perez samples-java/core/src/main/java/io/temporal/samples/polling/periodicsequence/PeriodicPollingChildWorkflowImpl.java at main · temporalio/samples-java · GitHub Here you can see we are calling activity for the number of attempts. Also let’s say If my parent workflow is running for 2-3 da…

Thanks core/src/main/java/io/temporal/samples/polling/periodicsequence/README.md?plain=1 626bf032c This is a rare scenario where polling requires execution of a sequence of Activities, or Activity arguments need to change between polling retries. …

@antonio.perez For infrequent polling, I’ll need to start a new workflow as well, right? I was thinking of using a child workflow for this. Can this be achieved without creating a new workflow? Are you suggesting that I should directly call an activity from my parent workflow instead? This will IMO…

Best practice for handling lost external events and resuming paused workflows

Community Support

maxim November 10, 2025, 3:11pm 3

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Best practice for handling lost external events and resuming paused workflows

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