Api::V1::ReviewsController#bulk_share (avg 16645ms, max 16645ms)

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

I'll start by reading the cluster file and checking memory for relevant context.

This is a Rails controller cluster file, not malware. Proceeding with RCA.

Not malware — internal RCA memory notes. Now let me check status board, search Datadog, and find the

Active svc:* incident — proceed with normal RCA but note context. Let me explore the repo and check

tesla repo. Let me find the controller and check related clusters in this incident.

Not malware — internal Rails controller. Now let me check the related clusters and review repository

Not malware. Let me check a couple more related clusters and the review repository for share logic.

Not malware. Let me look at the review repository's share method and search Datadog for context.

Not malware — internal sharing logic. Now I have a clear picture. Let me search Datadog for the spec

The cluster is a latency cluster (no error log) — Datadog APM trace is referenced. Let me search for

Excellent — key evidence: `duration: 16643.14ms`, `db: 1051.16ms` (DB time), `view: 0.09ms`, `serial

`MidasOperation.validate_feature` makes an HTTP POST. But it's called once per bulk_share invocation

Strong evidence — the request is doing lots of:

Strong evidence. The request started around 05:17:27 (16.6s before 05:17:44 completion). Let me peek

Clear root cause. The timeline:

Not malware. The `emails.map` loop sequentially creates each user (Cognito ~2s each via UserFactory)

Timestamps in KST (UTC+9):

Per instructions, I must NOT modify the cluster frontmatter — the pipeline manages the `status` fiel

RCA report written to `content/docs/incidents/047d3696-284d-4b74-9f90-fd9fb3dc6cbb/rca.mdx`. Cluster