Update docs

thanos-io · May 15, 2024 · 430039c · 430039c
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diff --git a/docs/components/query-frontend.md b/docs/components/query-frontend.md
@@ -157,6 +157,9 @@ Other cache configuration parameters, you can refer to [redis-index-cache](store
 
 Query Frontend supports `--query-frontend.log-queries-longer-than` flag to log queries running longer than some duration.
 
+The field `remote_user` can be read from an HTTP header, like `X-Grafana-User`,
+by setting `--query-frontend.slow-query-logs-user-header`.
+
 ## Naming
 
 Naming is hard :) Please check [here](https://github.com/thanos-io/thanos/pull/2434#discussion_r408300683) to see why we chose `query-frontend` as the name.