tju-yxq opened a new issue, #2542:
URL: https://github.com/apache/rocketmq-dashboard/issues/2542
## Problem
The instance management page currently fetches every configured instance in
a single request:
```ts
const res = await client.get<{ data: Instance[] }>('/instances', { params });
return res.data.data;
```
The backend also loads all matching rows, then the UI renders the table with
`pagination={false}`.
Although the endpoint supports type and search filters, there is no bounded
page size, server total, or page navigation. This differs from the other
management inventories (cloud credentials, data sources, Studio users, query
history), which use server-side pagination.
As an operator imports more cloud instances, the initial management page
transfers and renders the whole inventory at once.
## Expected behavior
- Add a backward-compatible `GET /api/instances/page` endpoint.
- Support the existing type/search filters plus:
- `page` (default 1)
- `pageSize` (default 20, maximum 100)
- Reject invalid pagination before repository or provider access.
- Return `items`, `total`, `page`, and `size`.
- Keep the existing unpaginated endpoint for instance selector usage.
- Update the instance management page to use server-side pagination,
preserve search/type filtering, reset to page 1 when filters change, and
support 20/50/100 page sizes.
- Keep resource counts and the existing sort order unchanged.
## Verification scope
Tests should cover service slice selection and validation, the HTTP page
contract, frontend API parameters, and the instance page's server-driven
pagination behavior.
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