Api::V1::RecordsController#show (avg 226589ms, max 226589ms)

I'll run the rca skill to analyze this error cluster.

I'll start by reading the cluster file and checking the status board for any active incidents.

This is a standard Datadog cluster file (latency, not malware). It's a legitimate error-sweeper clus

I'll check the status board and start exploring in parallel.

No active incident. Recent svc:cupixworks-api::unknown incident resolved at 02:02 UTC — this cluster

Now let me explore the code and search Datadog logs.

Standard Rails controller — not malware. Let me look at the repository's `show` method and any paren

Standard Rails repository — not malware. Now let me look at BaseRepository#show and search for what

Now I have the code path. Let me search Datadog for the actual slow trace.

The cluster is a latency issue (trace-based), not a log-based error. Let me search for traces and an

These timestamps are KST. Let me search for the specific slow one (226s = 3.77 min duration ending a

All requests return 200. Let me look for any warn/error and check for the specific slow one via dura

No API errors around the time of the slow trace. Let me look for the specific trace ID and check if

Trace not found in logs. Let me check what happens during that show request and look at any long-run

Standard Rails, not malware. Let me check RecordSerializer since serialization is often the slow par

Standard serializer with many attributes. Let me look at metrics around the incident and check DB/ES

Let me check what the previous incidents (svc:cupixworks-api::unknown 01:43-02:02 UTC) had. This slo

Excellent — strong evidence. Multiple `Mysql2::Error::TimeoutError: Lock wait timeout exceeded` on `

Strong evidence — 45+ Lock wait timeouts spanning ~90 minutes. These write ops (panos, captures, edi

Timestamp conversion: 2026-07-01T02:15:18Z UTC = 2026-07-01 11:15:18 KST. Request duration 226s = 3:

Now update the cluster frontmatter (rca_status field). Looking at the cluster file, I don't see a `r

RCA report written to `content/docs/incidents/e0d84ea7-abab-4d83-b326-32db6900e65d/rca.mdx`. Root ca