peachisai commented on PR #13119:
URL: https://github.com/apache/skywalking/pull/13119#issuecomment-2736771797
> @peachisai Could you provide a more precise description or demo about how
to use this filter? It seems not documented clearly.
Sorry, I didn’t fully understand. Do you mean adding a detailed document on
how to use the filter expression? However, I saw it in the **backend.md** file.
```
# filter the metrics, only those metrics that satisfy this condition will be
passed into the `metricsRules` below.
filter: <closure> # example: '{ tags -> tags.job_name == "vm-monitoring" }'
```
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