{
  "dashboard": {
    "title": "PostgreSQL & HikariCP Monitoring",
    "tags": ["database", "postgres", "hikaricp"],
    "timezone": "browser",
    "panels": [
      {
        "id": 1,
        "title": "Connection Pool Status",
        "type": "stat",
        "gridPos": {"x": 0, "y": 0, "w": 6, "h": 4},
        "targets": [
          {
            "expr": "hikaricp_connections_active{application=\"todo\"}",
            "legendFormat": "Active"
          }
        ],
        "options": {
          "colorMode": "value",
          "graphMode": "area"
        }
      },
      {
        "id": 2,
        "title": "Idle Connections",
        "type": "stat",
        "gridPos": {"x": 6, "y": 0, "w": 6, "h": 4},
        "targets": [
          {
            "expr": "hikaricp_connections_idle{application=\"todo\"}",
            "legendFormat": "Idle"
          }
        ],
        "options": {
          "colorMode": "value",
          "graphMode": "area"
        }
      },
      {
        "id": 3,
        "title": "Total Connections",
        "type": "stat",
        "gridPos": {"x": 12, "y": 0, "w": 6, "h": 4},
        "targets": [
          {
            "expr": "hikaricp_connections{application=\"todo\"}",
            "legendFormat": "Total"
          }
        ],
        "options": {
          "colorMode": "value",
          "graphMode": "area"
        }
      },
      {
        "id": 4,
        "title": "Pending Threads",
        "type": "stat",
        "gridPos": {"x": 18, "y": 0, "w": 6, "h": 4},
        "targets": [
          {
            "expr": "hikaricp_connections_pending{application=\"todo\"}",
            "legendFormat": "Pending"
          }
        ],
        "options": {
          "colorMode": "value",
          "graphMode": "area"
        }
      },
      {
        "id": 5,
        "title": "Connection Pool Utilization (%)",
        "type": "graph",
        "gridPos": {"x": 0, "y": 4, "w": 12, "h": 8},
        "targets": [
          {
            "expr": "(hikaricp_connections_active{application=\"todo\"} / hikaricp_connections_max{application=\"todo\"}) * 100",
            "legendFormat": "Active %"
          },
          {
            "expr": "(hikaricp_connections{application=\"todo\"} / hikaricp_connections_max{application=\"todo\"}) * 100",
            "legendFormat": "Total %"
          }
        ],
        "yaxes": [
          {"format": "percent", "label": "Utilization", "min": 0, "max": 100},
          {"format": "short"}
        ]
      },
      {
        "id": 6,
        "title": "Connection Acquire Time",
        "type": "graph",
        "gridPos": {"x": 12, "y": 4, "w": 12, "h": 8},
        "targets": [
          {
            "expr": "histogram_quantile(0.5, rate(hikaricp_connections_acquire_seconds_bucket{application=\"todo\"}[1m]))",
            "legendFormat": "p50"
          },
          {
            "expr": "histogram_quantile(0.95, rate(hikaricp_connections_acquire_seconds_bucket{application=\"todo\"}[1m]))",
            "legendFormat": "p95"
          },
          {
            "expr": "histogram_quantile(0.99, rate(hikaricp_connections_acquire_seconds_bucket{application=\"todo\"}[1m]))",
            "legendFormat": "p99"
          }
        ],
        "yaxes": [
          {"format": "s", "label": "Time"},
          {"format": "short"}
        ]
      },
      {
        "id": 7,
        "title": "Connection Timeout Count",
        "type": "graph",
        "gridPos": {"x": 0, "y": 12, "w": 12, "h": 8},
        "targets": [
          {
            "expr": "rate(hikaricp_connections_timeout_total{application=\"todo\"}[1m])",
            "legendFormat": "Timeouts/sec"
          }
        ],
        "yaxes": [
          {"format": "short"},
          {"format": "short"}
        ]
      },
      {
        "id": 8,
        "title": "Connection Creation Time",
        "type": "graph",
        "gridPos": {"x": 12, "y": 12, "w": 12, "h": 8},
        "targets": [
          {
            "expr": "rate(hikaricp_connections_creation_seconds_sum{application=\"todo\"}[1m]) / rate(hikaricp_connections_creation_seconds_count{application=\"todo\"}[1m])",
            "legendFormat": "Avg Creation Time"
          }
        ],
        "yaxes": [
          {"format": "s"},
          {"format": "short"}
        ]
      },
      {
        "id": 9,
        "title": "Connection Usage Time",
        "type": "graph",
        "gridPos": {"x": 0, "y": 20, "w": 12, "h": 8},
        "targets": [
          {
            "expr": "rate(hikaricp_connections_usage_seconds_sum{application=\"todo\"}[1m]) / rate(hikaricp_connections_usage_seconds_count{application=\"todo\"}[1m])",
            "legendFormat": "Avg Usage Time"
          }
        ],
        "yaxes": [
          {"format": "s"},
          {"format": "short"}
        ]
      },
      {
        "id": 10,
        "title": "JDBC Queries Rate",
        "type": "graph",
        "gridPos": {"x": 12, "y": 20, "w": 12, "h": 8},
        "targets": [
          {
            "expr": "rate(jdbc_connections_active{application=\"todo\"}[1m])",
            "legendFormat": "Active JDBC Connections"
          }
        ],
        "yaxes": [
          {"format": "short"},
          {"format": "short"}
        ]
      }
    ],
    "refresh": "5s",
    "time": {
      "from": "now-15m",
      "to": "now"
    }
  },
  "overwrite": true
}