ChuanFF opened a new pull request, #13054: URL: https://github.com/apache/apisix/pull/13054
### Description This PR introduces a data warm-up mechanism for the Kubernetes discovery module. Previously, APISIX worker processes might start handling traffic before the Kubernetes endpoints cache was fully populated, potentially causing initial request failures due to missing upstream nodes. With this change, the master process now performs an immediate, synchronous list operation against the Kubernetes API server during initialization (init phase), ensuring that endpoint data is pre-loaded into shared memory before worker processes are spawned. The warm-up execution is synchronous and blocking but only runs once in the master process during startup. Since it performs a single list request (not watch), the latency impact is minimal and acceptable for initialization phase. ### Checklist - [x] I have explained the need for this PR and the problem it solves - [x] I have explained the changes or the new features added to this PR - [x] I have added tests corresponding to this change - [x] I have updated the documentation to reflect this change - [x] I have verified that this change is backward compatible (If not, please discuss on the [APISIX mailing list](https://github.com/apache/apisix/tree/master#community) first) <!-- Note 1. Mark the PR as draft until it's ready to be reviewed. 2. Always add/update tests for any changes unless you have a good reason. 3. Always update the documentation to reflect the changes made in the PR. 4. Make a new commit to resolve conversations instead of `push -f`. 5. To resolve merge conflicts, merge master instead of rebasing. 6. Use "request review" to notify the reviewer after making changes. 7. Only a reviewer can mark a conversation as resolved. --> -- 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]
