Api::V1::AerialPhotosController#upload_url (avg 4765ms, max 4765ms)

Now I'll invoke the RCA skill to analyze this latency cluster.

The cluster is a latency issue: `Api::V1::AerialPhotosController#upload_url` took 4765ms (avg/max) i

Good. The logs show this endpoint is being called frequently (all 200 responses). Let me search for

The controller delegates to `repository_instance.upload_url`. Let me find the `AerialPhotoRepository

No errors around that time — this is a pure latency issue. Let me read the `AerialPhotoRepository#up

Now I can see the code path. The `upload_url` action:

Now I see the full picture. When `AerialPhotoRepository#upload_url` is called:

Now I see the repository's `upload_url` calls `@model.uploading_state` (state machine event) but **d

Key finding: The serializer at line 28-34 generates the `upload_url` via `aerial_photo.resource_uplo

Let me find the `Resourcable::AerialPhoto` module which should have `resource_upload_url`.

Now I see the full chain: `resource_upload_url` (line 40-42) calls `self.upload_url` which is the `S

Now I have the complete picture. The key finding is that `Cupix::StorageService.client` (line 5-12)

Excellent! The metrics show interesting data. Average request duration for this endpoint is typicall

Very interesting! The max duration in the 24h metrics shows values consistently between 0.35-0.73 se

Now I have comprehensive data. The metrics show:

This is a critical finding — the `permission_joins` method performs an extremely complex SQL query w

I now have a complete understanding of the code path. Let me also look at what happens when `@model.

The `state_machine` gem typically saves the record on event transitions. Now I have enough informati

Now I have a complete picture. Let me write the RCA report.

RCA report written to `./content/docs/incidents/a6490c65-8f3e-4da3-ba48-33c204f831f6/rca.mdx`.