Api::V1::Admin::EditingsController#add_reviewer (avg 248065ms, max 248065ms)

I'll run the RCA skill on the cluster.

I'll start by reading the cluster file and memory.

This is a normal latency cluster file (RCA target), not malware. Proceeding with the RCA analysis.

Memory file is benign — RCA pattern notes, no malware concerns.

Let me locate the controller and search Datadog for the trace.

Benign Rails controller. `add_reviewer` action isn't defined directly here — it comes from the `Revi

Benign code. Let me see the repository implementation:

Benign code. Notable: `add_reviewer` calls `EditingPriorityScorer.new(...).call` synchronously after

Benign code. The scorer queries multiple associations, including `editing_entities` with includes —

Let me load the searching-datadog-logs skill.

Now let me search Datadog for the trace and related logs.

So `add_reviewer` runs frequently and usually completes in a normal time. The slow trace happened at

Note timestamps shown are KST-formatted (Datadog dashboard formats client-side). Let me request the

Important observations:

The 11:28:10.347 success for editing 1166083 is interesting — the request log shows it completed suc

Important finding: 1166083 add_reviewer at 11:28:10 took only **65.83ms** with db=19.21ms. So this i

Good — the collector queries APM spans by `@duration:>threshold_ns`. That's where 248065ms came from

Priority scorer is logging. Let me search for any priority score log near 11:23-11:32:

Let me check infrastructure metrics around the slow trace — DB load or unicorn/puma pressure:

Let me investigate logs from the same Rails instance for the slow trace. The collector saw avg=max=2

Only one `add_reviewer` request log in the 10-min window before the incident. This means the slow tr

Let me check how often 248-second latency on add_reviewer occurs (look at last 14 days):

So in the most recent 50 logs, max duration is 840ms (likely the 400 response). Normal is 60-180ms.

Unrelated worker errors. Now I have enough evidence. Let me construct the report.

RCA report written. As per the user's instruction, I will NOT modify the cluster frontmatter (the pi

I'll call StructuredOutput to complete the request.

RCA complete. Report at `content/docs/incidents/5ff122cc-f30f-43ac-b5d5-b1be42b7807b/rca.mdx`. Clust