Aias00 opened a new issue, #1090:
URL: https://github.com/apache/rocketmq-dashboard/issues/1090
## Problem
The Broker Cluster page starts `loadData()` while rendering and its
live-refresh switch only changes local state. The render-time state update
violates the React lifecycle, while enabling the switch never requests updated
cluster data.
## Scope
Track 1 / Cluster and Broker operations.
## Proposed fix
Move initial loading into an effect, schedule refreshes only while live
refresh is enabled, clean up the timer on disable/unmount, and add regression
tests for the initial and periodic fetch behavior.
## Evidence
`web/src/pages/studio/BrokerCluster.tsx`: the `initialized` render guard
invokes `void loadData()` during render; the Switch uses
`onChange={setAutoRefresh}` without any timer or effect.
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