What does this Orleans message mean: Dropping expired message Request

Question

We are running into some issues for our Microsoft Orleans.

The error message is:

Dropping expired message Request [S172.18.0.28:11111:65729425 documentstate/105-ACTIVE-ACTIVE!5487.1]->[S172.18.0.28:11111:65729425 documentwork/105-ACTIVE-ACTIVE!5487.1]

What does it mean?

Experts explain to me the meaning of this message.

Answer 1

In Orleans, messages between grains can have a specified lifetime, and if a message doesn't get processed within that time frame (perhaps due to network latency, a backlog of messages on the server, or the grain being deactivated), the system will drop the message to prevent outdated or irrelevant messages from being processed.

you might need to look into the following:

• Check your network latency: High latency might cause messages to take longer than expected to reach their destination.
• Review grain activation and deactivation settings: If grains are deactivating too quickly, they might not be available to process incoming messages.
• Adjust message timeout settings: If your application's workload typically includes long-running tasks, you might need to increase the timeout value for messages.
• Monitor system performance: If the system is under heavy load, message processing might be delayed. Optimizing performance or scaling out might be necessary.
• Review the Orleans logs and metrics: These can provide more context about why messages are expiring and help you pinpoint the bottleneck or misconfiguration causing the issue.

It's important to carefully consider the implications of increasing timeouts or altering grain lifecycle settings, as these can affect the performance and reliability of your Orleans application.