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perf(coderd/database): limit GetLatestWorkspaceAppStatusByAppID to 1 row (#20917)

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## Description

This PR fixes an issue where `GetLatestWorkspaceAppStatusesByAppID`
returned an unbounded number of rows for a given app ID, which could
cause performance issues for noisy or long-running AI tasks.

## Impact

This change reduces database query overhead for workspace app status
updates, particularly for busy AI tasks that update their status
frequently. Previously, fetching the latest status would return all
historical statuses, now it returns only the most recent one.

Fixes #20862

---

🤖 This change was written by Claude Sonnet 4.5 Thinking using [mux](https://github.com/coder/mux) and reviewed by a human 🏄🏻‍♂️
This commit is contained in:
Mathias Fredriksson
2025-11-25 16:56:42 +02:00
committed by GitHub
parent 5213023fe5
commit 37fc6646ad
8 changed files with 45 additions and 56 deletions
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coderd/database/queries/workspaceapps.sql
+3 -2
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@@ -73,11 +73,12 @@ RETURNING *;
-- name: GetWorkspaceAppStatusesByAppIDs :many
SELECT * FROM workspace_app_statuses WHERE app_id = ANY(@ids :: uuid [ ]);
-- name: GetLatestWorkspaceAppStatusesByAppID :many
-- name: GetLatestWorkspaceAppStatusByAppID :one
SELECT *
FROM workspace_app_statuses
WHERE app_id = @app_id::uuid
ORDER BY created_at DESC, id DESC;
ORDER BY created_at DESC, id DESC
LIMIT 1;
-- name: GetLatestWorkspaceAppStatusesByWorkspaceIDs :many
SELECT DISTINCT ON (workspace_id)