HendSame opened a new pull request #7194:
URL: https://github.com/apache/skywalking/pull/7194
### <Feature description>
- As we know, it supports configure `sampling rate` and `trace latency` on
the backend side, but it is global.
- Can I configure sampling rate dynamically follow every service or instance
or interface latitude in some cases when I only want to see the exception
trace, or the trace that has cost a very long time? But I do not want to
configure the global `sampling rate` and `trace latency`, by reason of the
storage layer cannot support large data load.
- We can configure in a yaml:
```
services:
- name: serverName # the server name which show skywalking-ui
instances:
- name: [email protected] # the server instance which show
skywalking-ui
sampleRate: 900 # instance latitude
duration: 10000 # trace latency time
endpoints:
- name: '/url' # the endpoint
sampleRate: 800
duration: 10000 # trace latency time
sampleRate: 1000 # endpoint latitude
duration: 10000 # trace latency time
```
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