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Posted to notifications@shenyu.apache.org by "Aias00 (via GitHub)" <gi...@apache.org> on 2026/08/02 12:12:21 UTC
[I] [BUG] Sync-data-center: no queues, no batching, no dedup on the gateway side [shenyu]
Aias00 opened a new issue, #6587:
URL: https://github.com/apache/shenyu/issues/6587
## Description
There are no queues and no batching anywhere in the gateway-side sync path. A `MYSELF`/`REFRESH` payload containing the entire namespace deserializes and re-caches every entry inline on the `onMessage` thread. No event dedup: `AbstractDataHandler.handle` always re-applies (`doUpdate`/`doRefresh`) regardless of whether the data actually changed — admin churn translates 1:1 into gateway CPU. A slow plugin handler stalls all subsequent config updates for that gateway.
## Location
```
shenyu-sync-data-websocket/.../client/ShenyuWebsocketClient.java:189-207,267-274
WebsocketDataHandler.java:67 -> AbstractDataHandler.java:62-85
AbstractNodeDataSyncService.java:212-253
```
## Impact
A single slow handler or a large burst saturates the one listener thread and silently delays all later config propagation; admin churn amplifies 1:1 into gateway CPU.
## Suggested fix
Add a bounded work queue + parallelism for config application; dedup by version/md5 before re-applying.
## Related existing issue(s)
#6461 (websocket reconnect) and #6523 (repeated successful polls) are specific defects; this is the structural lack of gateway-side queueing/dedup that amplifies them.
_Identified during the 2026-08-02 audit; full list in [`docs/issue-candidates-2026-08-02.md`](docs/issue-candidates-2026-08-02.md)._
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Re: [I] [BUG] Sync-data-center: no queues, no batching, no dedup on the gateway side [shenyu]
Posted by "github-actions[bot] (via GitHub)" <gi...@apache.org>.
github-actions[bot] commented on issue #6587:
URL: https://github.com/apache/shenyu/issues/6587#issuecomment-5157760885
👋 Hello @Aias00
A new issue has been opened by @Aias00:
- **Title**: [BUG] Sync-data-center: no queues, no batching, no dedup on the gateway side
- **Link**: https://github.com/apache/shenyu/issues/6587
Please review when you have time. Thank you! 🙏
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Re: [I] [BUG] Sync-data-center: no queues, no batching, no dedup on the gateway side [shenyu]
Posted by "wy471x (via GitHub)" <gi...@apache.org>.
wy471x commented on issue #6587:
URL: https://github.com/apache/shenyu/issues/6587#issuecomment-5975580475
/assign
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Re: [I] [BUG] Sync-data-center: no queues, no batching, no dedup on the gateway side [shenyu]
Posted by "Aias00 (via GitHub)" <gi...@apache.org>.
Aias00 closed issue #6587: [BUG] Sync-data-center: no queues, no batching, no dedup on the gateway side
URL: https://github.com/apache/shenyu/issues/6587
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