feat(observability): Scrabble — Messages Grafana dashboard #78

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developer merged 1 commits from feature/messages-dashboard into development 2026-06-17 10:05:16 +00:00

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developer commented 2026-06-17 10:01:11 +00:00

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The deferred follow-up to the chat read-receipts feature: a Grafana Scrabble — Messages dashboard for the metrics that already shipped.

Panels (deploy/grafana/dashboards/messages.json, uid scrabble-messages)

• Chat entries posted — rate(chat_messages_total) by kind.
• Unread backlog — chat_unread_messages gauge.
• Publish → read latency (avg by kind) — rate(chat_read_duration_sum)/rate(chat_read_duration_count) (the owner's explicit ask).
• Publish → read latency (p50 / p95) — histogram_quantile over chat_read_duration_bucket (robust complement).

Mirrors game-domain.json (datasource/panel/target shape, unit: s on the latency panels). The file provider auto-discovers it (no provisioning change).

Verification

• All dashboard JSON valid (jq); uid unique.
• Confirmed chat_unread_messages is a live series in the contour Prometheus (the metrics deployed with the read-receipt merge); the activity-driven chat_messages_total / chat_read_duration_* are 0-series only because no chat has happened on the freshly-redeployed contour yet — names follow the confirmed game_move_duration_bucket convention.
• Deploy-only change; no Go/UI build affected.

Docs

• docs/ARCHITECTURE.md §11 (chat metrics → Messages dashboard), PRERELEASE.md CR row.

The deferred follow-up to the chat read-receipts feature: a Grafana **Scrabble — Messages** dashboard for the metrics that already shipped. ## Panels (`deploy/grafana/dashboards/messages.json`, uid `scrabble-messages`) - **Chat entries posted** — `rate(chat_messages_total)` by kind. - **Unread backlog** — `chat_unread_messages` gauge. - **Publish → read latency (avg by kind)** — `rate(chat_read_duration_sum)/rate(chat_read_duration_count)` (the owner's explicit ask). - **Publish → read latency (p50 / p95)** — `histogram_quantile` over `chat_read_duration_bucket` (robust complement). Mirrors `game-domain.json` (datasource/panel/target shape, `unit: s` on the latency panels). The file provider auto-discovers it (no provisioning change). ## Verification - All dashboard JSON valid (`jq`); `uid` unique. - Confirmed `chat_unread_messages` is a live series in the contour Prometheus (the metrics deployed with the read-receipt merge); the activity-driven `chat_messages_total` / `chat_read_duration_*` are 0-series only because no chat has happened on the freshly-redeployed contour yet — names follow the confirmed `game_move_duration_bucket` convention. - Deploy-only change; no Go/UI build affected. ## Docs - `docs/ARCHITECTURE.md` §11 (chat metrics → Messages dashboard), `PRERELEASE.md` CR row.

developer added 1 commit 2026-06-17 10:01:11 +00:00

feat(observability): add the Scrabble — Messages Grafana dashboard ... c3b3cafcdd

Visualises the chat read-receipt metrics added with the read-receipt feature
(the dashboard was deferred there per the owner): posted rate by kind, the
unread backlog (chat_unread_messages gauge), and the publish-to-read latency
(chat_read_duration — average by kind plus overall p50/p95). Mirrors the
game-domain dashboard's structure; the file provider auto-discovers it.

owner approved these changes 2026-06-17 10:05:04 +00:00

developer merged commit 236152ea7b into development 2026-06-17 10:05:16 +00:00

developer deleted branch feature/messages-dashboard 2026-06-17 10:05:16 +00:00

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Reference: developer/scrabble-game#78