Ilia Denisov
aa137e3558
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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.
85 lines
4.3 KiB
JSON
85 lines
4.3 KiB
JSON
{
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"uid": "scrabble-resources",
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"title": "Scrabble — Resources",
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"tags": ["scrabble"],
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"timezone": "",
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"schemaVersion": 39,
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"version": 1,
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"refresh": "30s",
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"time": { "from": "now-1h", "to": "now" },
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"panels": [
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{
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"type": "stat",
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"title": "Postgres connections",
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"description": "Backends connected to the scrabble database (postgres_exporter).",
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"gridPos": { "h": 5, "w": 6, "x": 0, "y": 0 },
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"datasource": { "type": "prometheus", "uid": "prometheus" },
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"targets": [{ "refId": "A", "expr": "sum(pg_stat_database_numbackends{datname=\"scrabble\"})" }]
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},
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{
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"type": "stat",
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"title": "Postgres cache hit ratio",
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"description": "blks_hit / (blks_hit + blks_read) over 5m.",
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"gridPos": { "h": 5, "w": 6, "x": 6, "y": 0 },
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"fieldConfig": { "defaults": { "unit": "percentunit", "min": 0, "max": 1 }, "overrides": [] },
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"datasource": { "type": "prometheus", "uid": "prometheus" },
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"targets": [{ "refId": "A", "expr": "sum(rate(pg_stat_database_blks_hit{datname=\"scrabble\"}[5m])) / clamp_min(sum(rate(pg_stat_database_blks_hit{datname=\"scrabble\"}[5m])) + sum(rate(pg_stat_database_blks_read{datname=\"scrabble\"}[5m])), 1)" }]
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},
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{
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"type": "stat",
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"title": "Postgres commits/s",
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"gridPos": { "h": 5, "w": 6, "x": 12, "y": 0 },
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"datasource": { "type": "prometheus", "uid": "prometheus" },
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"targets": [{ "refId": "A", "expr": "sum(rate(pg_stat_database_xact_commit{datname=\"scrabble\"}[5m]))" }]
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},
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{
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"type": "stat",
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"title": "Database size",
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"gridPos": { "h": 5, "w": 6, "x": 18, "y": 0 },
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"fieldConfig": { "defaults": { "unit": "bytes" }, "overrides": [] },
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"datasource": { "type": "prometheus", "uid": "prometheus" },
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"targets": [{ "refId": "A", "expr": "max(pg_database_size_bytes{datname=\"scrabble\"})" }]
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},
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{
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"type": "timeseries",
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"title": "Container CPU (cores) by container",
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"description": "cAdvisor container_cpu_usage_seconds_total rate, per scrabble-* container (the load harness appears when run as --name scrabble-loadtest). Verify the metric name against live Prometheus if empty.",
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"gridPos": { "h": 8, "w": 12, "x": 0, "y": 5 },
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"datasource": { "type": "prometheus", "uid": "prometheus" },
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"targets": [{ "refId": "A", "expr": "sum(rate(container_cpu_usage_seconds_total{name=~\"scrabble-.+\"}[5m])) by (name)", "legendFormat": "{{name}}" }]
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},
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{
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"type": "timeseries",
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"title": "Container memory (working set) by container",
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"description": "cAdvisor container_memory_working_set_bytes, per scrabble-* container.",
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"gridPos": { "h": 8, "w": 12, "x": 12, "y": 5 },
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"fieldConfig": { "defaults": { "unit": "bytes" }, "overrides": [] },
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"datasource": { "type": "prometheus", "uid": "prometheus" },
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"targets": [{ "refId": "A", "expr": "max(container_memory_working_set_bytes{name=~\"scrabble-.+\"}) by (name)", "legendFormat": "{{name}}" }]
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},
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{
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"type": "timeseries",
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"title": "Container network I/O by container",
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"description": "cAdvisor receive (+) and transmit (-) byte rates per scrabble-* container.",
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"gridPos": { "h": 8, "w": 12, "x": 0, "y": 13 },
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"fieldConfig": { "defaults": { "unit": "Bps" }, "overrides": [] },
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"datasource": { "type": "prometheus", "uid": "prometheus" },
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"targets": [
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{ "refId": "A", "expr": "sum(rate(container_network_receive_bytes_total{name=~\"scrabble-.+\"}[5m])) by (name)", "legendFormat": "rx {{name}}" },
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{ "refId": "B", "expr": "-sum(rate(container_network_transmit_bytes_total{name=~\"scrabble-.+\"}[5m])) by (name)", "legendFormat": "tx {{name}}" }
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]
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},
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{
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"type": "timeseries",
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"title": "Postgres transactions/s",
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"description": "Commit and rollback rates on the scrabble database (postgres_exporter).",
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"gridPos": { "h": 8, "w": 12, "x": 12, "y": 13 },
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"datasource": { "type": "prometheus", "uid": "prometheus" },
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"targets": [
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{ "refId": "A", "expr": "sum(rate(pg_stat_database_xact_commit{datname=\"scrabble\"}[5m]))", "legendFormat": "commit" },
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{ "refId": "B", "expr": "sum(rate(pg_stat_database_xact_rollback{datname=\"scrabble\"}[5m]))", "legendFormat": "rollback" }
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]
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}
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]
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}
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