wankai123 opened a new issue, #10076: URL: https://github.com/apache/skywalking/issues/10076
### Search before asking - [X] I had searched in the [issues](https://github.com/apache/skywalking/issues?q=is%3Aissue) and found no similar feature requirement. ### Description In the cluster mode, OAP instances send metrics to each other according to the `remote-hash code` to do L2 aggregation and alarm calculations for balancing​. Some of the calculations leverage the previously received metrics in the memory cache and incoming metrics. So when the OAP cluster scales, the metrics might lose their cache and impact the calculations. To avoid this situation, I think we should support listeners for the `RemoteClients` change, then the stream workers can be notified and reload previous metrics from storage for calculation. ### Use case 1. Provide listeners' interface for notification and a registration mechanism. 2. When the `RemoteClients` changes, notice all listeners. ### Related issues https://github.com/apache/skywalking/issues/10051 ### Are you willing to submit a PR? - [X] Yes I am willing to submit a PR! ### Code of Conduct - [X] I agree to follow this project's [Code of Conduct](https://www.apache.org/foundation/policies/conduct) -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
