{
  "annotations": {
    "list": [
      {
        "builtIn": 1,
        "datasource": {
          "type": "datasource",
          "uid": "grafana"
        },
        "enable": true,
        "hide": true,
        "iconColor": "rgba(0, 211, 255, 1)",
        "name": "Annotations & Alerts",
        "type": "dashboard"
      }
    ]
  },
  "description": "Time to First Signal (TTFS) observability dashboard for StellaOps",
  "editable": true,
  "fiscalYearStartMonth": 0,
  "graphTooltip": 0,
  "id": null,
  "links": [],
  "liveNow": false,
  "panels": [
    {
      "title": "TTFS P50/P95/P99 by Surface",
      "type": "timeseries",
      "gridPos": { "x": 0, "y": 0, "w": 12, "h": 8 },
      "id": 1,
      "datasource": {
        "type": "prometheus",
        "uid": "${datasource}"
      },
      "targets": [
        {
          "expr": "histogram_quantile(0.50, sum(rate(ttfs_latency_seconds_bucket[5m])) by (le, surface))",
          "legendFormat": "P50 - {{surface}}",
          "refId": "A"
        },
        {
          "expr": "histogram_quantile(0.95, sum(rate(ttfs_latency_seconds_bucket[5m])) by (le, surface))",
          "legendFormat": "P95 - {{surface}}",
          "refId": "B"
        },
        {
          "expr": "histogram_quantile(0.99, sum(rate(ttfs_latency_seconds_bucket[5m])) by (le, surface))",
          "legendFormat": "P99 - {{surface}}",
          "refId": "C"
        }
      ],
      "fieldConfig": {
        "defaults": {
          "unit": "s",
          "thresholds": {
            "mode": "absolute",
            "steps": [
              { "value": null, "color": "green" },
              { "value": 2, "color": "yellow" },
              { "value": 5, "color": "red" }
            ]
          },
          "custom": {
            "lineWidth": 1,
            "fillOpacity": 10,
            "showPoints": "auto"
          }
        },
        "overrides": []
      },
      "options": {
        "legend": {
          "displayMode": "table",
          "placement": "bottom",
          "calcs": ["mean", "max", "lastNotNull"]
        },
        "tooltip": {
          "mode": "multi",
          "sort": "desc"
        }
      }
    },
    {
      "title": "Cache Hit Rate",
      "type": "stat",
      "gridPos": { "x": 12, "y": 0, "w": 6, "h": 4 },
      "id": 2,
      "datasource": {
        "type": "prometheus",
        "uid": "${datasource}"
      },
      "targets": [
        {
          "expr": "sum(rate(ttfs_cache_hit_total[5m])) / sum(rate(ttfs_signal_total[5m]))",
          "legendFormat": "Hit Rate",
          "refId": "A"
        }
      ],
      "fieldConfig": {
        "defaults": {
          "unit": "percentunit",
          "thresholds": {
            "mode": "absolute",
            "steps": [
              { "value": null, "color": "red" },
              { "value": 0.7, "color": "yellow" },
              { "value": 0.9, "color": "green" }
            ]
          },
          "mappings": []
        },
        "overrides": []
      },
      "options": {
        "reduceOptions": {
          "values": false,
          "calcs": ["lastNotNull"],
          "fields": ""
        },
        "orientation": "auto",
        "textMode": "auto",
        "colorMode": "value",
        "graphMode": "area",
        "justifyMode": "auto"
      }
    },
    {
      "title": "SLO Breaches (P95 > 5s)",
      "type": "stat",
      "gridPos": { "x": 18, "y": 0, "w": 6, "h": 4 },
      "id": 3,
      "datasource": {
        "type": "prometheus",
        "uid": "${datasource}"
      },
      "targets": [
        {
          "expr": "sum(increase(ttfs_slo_breach_total[1h]))",
          "legendFormat": "Breaches (1h)",
          "refId": "A"
        }
      ],
      "fieldConfig": {
        "defaults": {
          "thresholds": {
            "mode": "absolute",
            "steps": [
              { "value": null, "color": "green" },
              { "value": 1, "color": "yellow" },
              { "value": 10, "color": "red" }
            ]
          },
          "mappings": []
        },
        "overrides": []
      },
      "options": {
        "reduceOptions": {
          "values": false,
          "calcs": ["lastNotNull"],
          "fields": ""
        },
        "orientation": "auto",
        "textMode": "auto",
        "colorMode": "background",
        "graphMode": "none",
        "justifyMode": "auto"
      }
    },
    {
      "title": "Signal Source Distribution",
      "type": "piechart",
      "gridPos": { "x": 12, "y": 4, "w": 6, "h": 4 },
      "id": 4,
      "datasource": {
        "type": "prometheus",
        "uid": "${datasource}"
      },
      "targets": [
        {
          "expr": "sum by (signal_source) (rate(ttfs_signal_total[1h]))",
          "legendFormat": "{{signal_source}}",
          "refId": "A"
        }
      ],
      "fieldConfig": {
        "defaults": {
          "mappings": []
        },
        "overrides": []
      },
      "options": {
        "legend": {
          "displayMode": "list",
          "placement": "right"
        },
        "pieType": "pie",
        "tooltip": {
          "mode": "single"
        }
      }
    },
    {
      "title": "Failure Signature Matches",
      "type": "stat",
      "gridPos": { "x": 18, "y": 4, "w": 6, "h": 4 },
      "id": 5,
      "datasource": {
        "type": "prometheus",
        "uid": "${datasource}"
      },
      "targets": [
        {
          "expr": "sum(rate(ttfs_failure_signature_match_total[5m]))",
          "legendFormat": "Matches/s",
          "refId": "A"
        }
      ],
      "fieldConfig": {
        "defaults": {
          "unit": "reqps",
          "thresholds": {
            "mode": "absolute",
            "steps": [
              { "value": null, "color": "blue" }
            ]
          }
        },
        "overrides": []
      }
    },
    {
      "title": "Signals by Kind",
      "type": "timeseries",
      "gridPos": { "x": 0, "y": 8, "w": 12, "h": 6 },
      "id": 6,
      "datasource": {
        "type": "prometheus",
        "uid": "${datasource}"
      },
      "targets": [
        {
          "expr": "sum by (kind) (rate(ttfs_signal_total[5m]))",
          "legendFormat": "{{kind}}",
          "refId": "A"
        }
      ],
      "fieldConfig": {
        "defaults": {
          "unit": "reqps",
          "custom": {
            "lineWidth": 1,
            "fillOpacity": 20,
            "stacking": {
              "mode": "normal",
              "group": "A"
            }
          }
        },
        "overrides": []
      },
      "options": {
        "legend": {
          "displayMode": "list",
          "placement": "bottom"
        }
      }
    },
    {
      "title": "Error Rate",
      "type": "timeseries",
      "gridPos": { "x": 12, "y": 8, "w": 12, "h": 6 },
      "id": 7,
      "datasource": {
        "type": "prometheus",
        "uid": "${datasource}"
      },
      "targets": [
        {
          "expr": "sum(rate(ttfs_error_total[5m])) / sum(rate(ttfs_signal_total[5m]))",
          "legendFormat": "Error Rate",
          "refId": "A"
        }
      ],
      "fieldConfig": {
        "defaults": {
          "unit": "percentunit",
          "max": 0.1,
          "thresholds": {
            "mode": "absolute",
            "steps": [
              { "value": null, "color": "green" },
              { "value": 0.01, "color": "yellow" },
              { "value": 0.05, "color": "red" }
            ]
          },
          "custom": {
            "lineWidth": 2,
            "fillOpacity": 10
          }
        },
        "overrides": []
      },
      "options": {
        "legend": {
          "displayMode": "list",
          "placement": "bottom"
        }
      }
    },
    {
      "title": "TTFS Latency Heatmap",
      "type": "heatmap",
      "gridPos": { "x": 0, "y": 14, "w": 12, "h": 8 },
      "id": 8,
      "datasource": {
        "type": "prometheus",
        "uid": "${datasource}"
      },
      "targets": [
        {
          "expr": "sum(increase(ttfs_latency_seconds_bucket[1m])) by (le)",
          "legendFormat": "{{le}}",
          "format": "heatmap",
          "refId": "A"
        }
      ],
      "options": {
        "calculate": false,
        "yAxis": {
          "axisPlacement": "left",
          "unit": "s"
        },
        "color": {
          "scheme": "Spectral",
          "mode": "scheme"
        },
        "cellGap": 1
      }
    },
    {
      "title": "First Signal Endpoint Latency",
      "type": "timeseries",
      "gridPos": { "x": 12, "y": 14, "w": 12, "h": 8 },
      "id": 9,
      "datasource": {
        "type": "prometheus",
        "uid": "${datasource}"
      },
      "targets": [
        {
          "expr": "histogram_quantile(0.50, sum(rate(http_request_duration_seconds_bucket{route=~\"/api/v1/orchestrator/runs/.*/first-signal\"}[5m])) by (le))",
          "legendFormat": "P50",
          "refId": "A"
        },
        {
          "expr": "histogram_quantile(0.95, sum(rate(http_request_duration_seconds_bucket{route=~\"/api/v1/orchestrator/runs/.*/first-signal\"}[5m])) by (le))",
          "legendFormat": "P95",
          "refId": "B"
        },
        {
          "expr": "histogram_quantile(0.99, sum(rate(http_request_duration_seconds_bucket{route=~\"/api/v1/orchestrator/runs/.*/first-signal\"}[5m])) by (le))",
          "legendFormat": "P99",
          "refId": "C"
        }
      ],
      "fieldConfig": {
        "defaults": {
          "unit": "s",
          "thresholds": {
            "mode": "absolute",
            "steps": [
              { "value": null, "color": "green" },
              { "value": 0.3, "color": "yellow" },
              { "value": 0.5, "color": "red" }
            ]
          },
          "custom": {
            "lineWidth": 1,
            "fillOpacity": 10
          }
        },
        "overrides": []
      }
    },
    {
      "title": "Open→Action Time Distribution",
      "type": "histogram",
      "gridPos": { "x": 0, "y": 22, "w": 8, "h": 6 },
      "id": 10,
      "datasource": {
        "type": "prometheus",
        "uid": "${datasource}"
      },
      "targets": [
        {
          "expr": "sum(increase(ttfs_open_to_action_seconds_bucket[5m])) by (le)",
          "legendFormat": "{{le}}",
          "format": "heatmap",
          "refId": "A"
        }
      ],
      "fieldConfig": {
        "defaults": {
          "unit": "s"
        }
      }
    },
    {
      "title": "Bounce Rate (< 10s)",
      "type": "stat",
      "gridPos": { "x": 8, "y": 22, "w": 4, "h": 6 },
      "id": 11,
      "datasource": {
        "type": "prometheus",
        "uid": "${datasource}"
      },
      "targets": [
        {
          "expr": "sum(rate(ttfs_bounce_total[5m])) / sum(rate(ttfs_page_view_total[5m]))",
          "legendFormat": "Bounce Rate",
          "refId": "A"
        }
      ],
      "fieldConfig": {
        "defaults": {
          "unit": "percentunit",
          "thresholds": {
            "mode": "absolute",
            "steps": [
              { "value": null, "color": "green" },
              { "value": 0.3, "color": "yellow" },
              { "value": 0.5, "color": "red" }
            ]
          }
        }
      }
    },
    {
      "title": "Top Failure Signatures",
      "type": "table",
      "gridPos": { "x": 12, "y": 22, "w": 12, "h": 6 },
      "id": 12,
      "datasource": {
        "type": "prometheus",
        "uid": "${datasource}"
      },
      "targets": [
        {
          "expr": "topk(10, sum by (error_token, error_code) (ttfs_failure_signature_hit_total))",
          "legendFormat": "{{error_token}} ({{error_code}})",
          "format": "table",
          "instant": true,
          "refId": "A"
        }
      ],
      "fieldConfig": {
        "defaults": {
          "custom": {
            "align": "auto"
          }
        },
        "overrides": [
          {
            "matcher": { "id": "byName", "options": "Value" },
            "properties": [
              { "id": "displayName", "value": "Hit Count" }
            ]
          }
        ]
      },
      "transformations": [
        {
          "id": "organize",
          "options": {
            "excludeByName": {
              "Time": true
            },
            "renameByName": {
              "error_token": "Token",
              "error_code": "Code"
            }
          }
        }
      ]
    }
  ],
  "refresh": "30s",
  "schemaVersion": 38,
  "style": "dark",
  "tags": ["ttfs", "ux", "slo", "stellaops"],
  "templating": {
    "list": [
      {
        "current": {
          "selected": false,
          "text": "Prometheus",
          "value": "prometheus"
        },
        "hide": 0,
        "includeAll": false,
        "label": "Datasource",
        "multi": false,
        "name": "datasource",
        "options": [],
        "query": "prometheus",
        "refresh": 1,
        "regex": "",
        "skipUrlSync": false,
        "type": "datasource"
      },
      {
        "allValue": ".*",
        "current": {
          "selected": true,
          "text": "All",
          "value": "$__all"
        },
        "datasource": {
          "type": "prometheus",
          "uid": "${datasource}"
        },
        "definition": "label_values(ttfs_latency_seconds_bucket, surface)",
        "hide": 0,
        "includeAll": true,
        "label": "Surface",
        "multi": true,
        "name": "surface",
        "options": [],
        "query": {
          "query": "label_values(ttfs_latency_seconds_bucket, surface)",
          "refId": "PrometheusVariableQueryEditor-VariableQuery"
        },
        "refresh": 2,
        "regex": "",
        "skipUrlSync": false,
        "sort": 1,
        "type": "query"
      }
    ]
  },
  "time": {
    "from": "now-6h",
    "to": "now"
  },
  "timepicker": {},
  "timezone": "utc",
  "title": "TTFS - Time to First Signal",
  "uid": "ttfs-overview",
  "version": 1,
  "weekStart": ""
}