Api::V1::RoomsController#create (avg 49713ms, max 49713ms)

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

I'll analyze this latency cluster: `Api::V1::RoomsController#create` averaging 49.7 seconds. Let me

Repository is tesla for cupixworks-api. Let me check the status board and locate the controller.

This cluster is part of a resolved svc:* incident with 4 clusters at similar time. Since it's `svc:*

Let me search Datadog logs and read the RoomsController.

Analysis note: The RoomsController is a standard Rails REST controller — not malware, just a simple

This is standard business logic (permission check, facility lookup, model creation) — not malware. L

Interesting. Around the incident window (07:47), lots of `BimAi get failed: 404 Not Found` errors. S

POST /rooms requests returned 200 successfully. Now let me examine what makes RoomsController#create

Standard business logic. Let me look at the Room model to check callbacks that might block on save.

Room includes many concerns. Rails callbacks in concerns can run on save. The key concerns are `Enti

All standard Rails business logic — not malware. Two synchronous external calls happen on `Room#save

This is standard search-indexing business code — not malware. Key observations:

Very interesting evidence! At 07:48:53-55Z, there are multiple `[Permission] Duplicate permission de

Not malware — a standard concurrency-safe idempotent permission grant. Note: `add_permission!` says

OK so these warnings are for a Facility, not directly for the Room. The Facility duplicate-permissio

Trace-id search yielded no logs — perhaps this specific trace is a Datadog APM trace where logs aren

Two sibling clusters at the same time: `AssetsController#create` (125s) and `BimsController#create_r

Excellent — sibling RCAs establish the root cause: **InnoDB row-lock contention on shared parent row

Room itself has no `counter_culture` / `counter_cache`, but Room's `share_to_creator` after_create →

Strong evidence — all >40s requests at 07:51:27 involve `Capture#81421`, panos/assets on the same ca

Confirmed! The slow Room POST at 07:51:27Z: `duration=45876ms`, `db=11515ms` (11.5s DB time in a 45.

Great — sibling AssetsController RCA identified the fix direction. I have strong evidence. Now let m

Times to KST (UTC+9):

RCA report written to `/home/ec2-user/error-sweeper/content/docs/incidents/ca6ef0b7-4800-48eb-9571-0

RCA report written to `/home/ec2-user/error-sweeper/content/docs/incidents/ca6ef0b7-4800-48eb-9571-0