zjncs opened a new issue, #6656:
URL: https://github.com/apache/rocketmq-dashboard/issues/6656
## Problem
After #950 resolved #769 by replacing the fabricated `Math.random()` runtime
values with `null`, the Proxy page kept rendering the columns and stat cards
those fields fed:
- The node table still renders six runtime columns — 版本 (version), 连接数
(connections), TPS, 内存 (memory), CPU, 运行时间 (uptime) — that no endpoint fills.
`ProxyHomePageData` carries only the address list and the current address;
`ProxyTopologyVO` carries status, ports and latency. Every row permanently
shows the unavailable placeholder, which reads as "metrics temporarily missing"
rather than "metrics do not exist".
- The stats row still renders 总连接数 (total connections) and 总 TPS (total TPS)
cards, permanently `N/A`.
- 健康节点 (healthy nodes) is hardcoded `null` even though the page already
overlays the live topology status onto every node — the count is never computed.
#769's expected behavior allowed two outcomes: "hide unsupported runtime
columns or show an explicit unavailable state such as N/A". #950 chose the N/A
route; the permanently-empty columns and cards are the residue of that choice.
## Expected behavior
- Drop the columns and aggregate cards no endpoint can fill (same direction
as the merged #6145, which removed a panel the API never fills).
- Compute the healthy node count from the overlaid topology status, so the
健康节点 card answers instead of showing `N/A` forever.
## Evidence
Reproduced with the frontend tests (`cd web && npx vitest run
src/pages/studio/__tests__/Proxy.test.tsx`):
- `getProxyTopology` resolving
`[{status:'UP'},{status:'UP'},{status:'DOWN'}]` leaves the 健康节点 card rendering
`N/A`;
- the six runtime column headers and the two aggregate cards render with
placeholder content in every state.
`web/src/pages/studio/Proxy.tsx` `applyProxyHome` initializes
`version/connections/tps/memory/cpu/uptime` to `null` and calls
`setClusterStats({..., healthyNodes: null, totalConnections: null, totalTPS:
null})`; nothing else in the page writes those fields.
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