R2: load-test harness + contour resource observability

New scrabble/loadtest module (the pre-release stress harness): seeds 1000 guest + 10000 durable accounts with pre-created sessions directly in Postgres (token hash matches backend/internal/session), drives virtual players through the edge protocol (real 2-4p games assembled via invitations, mid-ranked legal moves generated locally by the embedded scrabble-solver — the edge carries no board, so the client replays history), plus nudge/chat/check-word/draft/profile/stats and a gateway-hammer that verifies the rate limiter. Prints a trip-report summary (per-op latency percentiles, result codes, live-event tally). Go unit tests cover the pure pieces; the DAWG-backed move test runs under BACKEND_DICT_DIR. Contour: add cAdvisor + postgres_exporter + a 'Scrabble - Resources' Grafana dashboard and the two Prometheus scrape jobs, for the R2/R7 stress-run resource baseline. CI: gate ./loadtest/... (path filter + vet/build/test). Docs: TESTING, ARCHITECTURE, project CLAUDE repo layout.
2026-06-09 23:45:24 +02:00
parent bf3ee62711
commit aa137e3558
27 changed files with 2554 additions and 7 deletions
@@ -12,3 +12,12 @@ scrape_configs:
  - job_name: prometheus
    static_configs:
      - targets: ["localhost:9090"]
+  # Container resource metrics (CPU/memory/network/disk) for every contour
+  # container, for the R2/R7 stress runs' resource baseline.
+  - job_name: cadvisor
+    static_configs:
+      - targets: ["cadvisor:8080"]
+  # Postgres server metrics (connections, cache hit ratio, transactions, db size).
+  - job_name: postgres_exporter
+    static_configs:
+      - targets: ["postgres_exporter:9187"]