{
  "title": "Spring Boot Application Metrics",
  "tags": ["spring-boot", "todo-app"],
  "timezone": "browser",
  "schemaVersion": 16,
  "version": 0,
  "refresh": "5s",
  "panels": [
    {
      "id": 1,
      "title": "HTTP Request Rate",
      "type": "timeseries",
      "gridPos": {"x": 0, "y": 0, "w": 12, "h": 8},
      "targets": [
        {
          "expr": "rate(http_server_requests_seconds_count{application=\"todo\"}[1m])",
          "legendFormat": "{{method}} {{uri}} - {{status}}",
          "refId": "A"
        }
      ],
      "fieldConfig": {
        "defaults": {
          "unit": "reqps",
          "custom": {}
        }
      }
    },
    {
      "id": 2,
      "title": "HTTP Request Duration (p95, p99)",
      "type": "timeseries",
      "gridPos": {"x": 12, "y": 0, "w": 12, "h": 8},
      "targets": [
        {
          "expr": "histogram_quantile(0.95, sum(rate(http_server_requests_seconds_bucket{application=\"todo\"}[5m])) by (le, uri))",
          "legendFormat": "p95 - {{uri}}",
          "refId": "A"
        },
        {
          "expr": "histogram_quantile(0.99, sum(rate(http_server_requests_seconds_bucket{application=\"todo\"}[5m])) by (le, uri))",
          "legendFormat": "p99 - {{uri}}",
          "refId": "B"
        }
      ],
      "fieldConfig": {
        "defaults": {
          "unit": "s",
          "custom": {}
        }
      }
    },
    {
      "id": 3,
      "title": "HTTP Status Codes",
      "type": "timeseries",
      "gridPos": {"x": 0, "y": 8, "w": 12, "h": 8},
      "targets": [
        {
          "expr": "sum(rate(http_server_requests_seconds_count{application=\"todo\"}[1m])) by (status)",
          "legendFormat": "{{status}}",
          "refId": "A"
        }
      ],
      "fieldConfig": {
        "defaults": {
          "unit": "reqps",
          "custom": {}
        }
      }
    },
    {
      "id": 4,
      "title": "JVM Memory Used",
      "type": "timeseries",
      "gridPos": {"x": 12, "y": 8, "w": 12, "h": 8},
      "targets": [
        {
          "expr": "jvm_memory_used_bytes{application=\"todo\", area=\"heap\"}",
          "legendFormat": "Heap",
          "refId": "A"
        },
        {
          "expr": "jvm_memory_used_bytes{application=\"todo\", area=\"nonheap\"}",
          "legendFormat": "Non-Heap",
          "refId": "B"
        },
        {
          "expr": "jvm_memory_max_bytes{application=\"todo\", area=\"heap\"}",
          "legendFormat": "Heap Max",
          "refId": "C"
        }
      ],
      "fieldConfig": {
        "defaults": {
          "unit": "bytes",
          "custom": {}
        }
      }
    },
    {
      "id": 5,
      "title": "Database Connection Pool",
      "type": "timeseries",
      "gridPos": {"x": 0, "y": 16, "w": 12, "h": 8},
      "targets": [
        {
          "expr": "hikaricp_connections_active{application=\"todo\"}",
          "legendFormat": "Active",
          "refId": "A"
        },
        {
          "expr": "hikaricp_connections_idle{application=\"todo\"}",
          "legendFormat": "Idle",
          "refId": "B"
        },
        {
          "expr": "hikaricp_connections{application=\"todo\"}",
          "legendFormat": "Total",
          "refId": "C"
        },
        {
          "expr": "hikaricp_connections_max{application=\"todo\"}",
          "legendFormat": "Max",
          "refId": "D"
        }
      ],
      "fieldConfig": {
        "defaults": {
          "unit": "short",
          "custom": {}
        }
      }
    },
    {
      "id": 6,
      "title": "Database Connection Acquire Time",
      "type": "timeseries",
      "gridPos": {"x": 12, "y": 16, "w": 12, "h": 8},
      "targets": [
        {
          "expr": "rate(hikaricp_connections_acquire_seconds_sum{application=\"todo\"}[1m]) / rate(hikaricp_connections_acquire_seconds_count{application=\"todo\"}[1m])",
          "legendFormat": "Avg Acquire Time",
          "refId": "A"
        }
      ],
      "fieldConfig": {
        "defaults": {
          "unit": "s",
          "custom": {}
        }
      }
    },
    {
      "id": 7,
      "title": "JVM Threads",
      "type": "timeseries",
      "gridPos": {"x": 0, "y": 24, "w": 8, "h": 8},
      "targets": [
        {
          "expr": "jvm_threads_live_threads{application=\"todo\"}",
          "legendFormat": "Live",
          "refId": "A"
        },
        {
          "expr": "jvm_threads_daemon_threads{application=\"todo\"}",
          "legendFormat": "Daemon",
          "refId": "B"
        },
        {
          "expr": "jvm_threads_peak_threads{application=\"todo\"}",
          "legendFormat": "Peak",
          "refId": "C"
        }
      ],
      "fieldConfig": {
        "defaults": {
          "unit": "short",
          "custom": {}
        }
      }
    },
    {
      "id": 8,
      "title": "GC Pause Time",
      "type": "timeseries",
      "gridPos": {"x": 8, "y": 24, "w": 8, "h": 8},
      "targets": [
        {
          "expr": "rate(jvm_gc_pause_seconds_sum{application=\"todo\"}[1m])",
          "legendFormat": "{{action}} - {{cause}}",
          "refId": "A"
        }
      ],
      "fieldConfig": {
        "defaults": {
          "unit": "s",
          "custom": {}
        }
      }
    },
    {
      "id": 9,
      "title": "System CPU Usage",
      "type": "timeseries",
      "gridPos": {"x": 16, "y": 24, "w": 8, "h": 8},
      "targets": [
        {
          "expr": "system_cpu_usage{application=\"todo\"}",
          "legendFormat": "System",
          "refId": "A"
        },
        {
          "expr": "process_cpu_usage{application=\"todo\"}",
          "legendFormat": "Process",
          "refId": "B"
        }
      ],
      "fieldConfig": {
        "defaults": {
          "unit": "percentunit",
          "custom": {}
        }
      }
    }
  ],
  "time": {
    "from": "now-15m",
    "to": "now"
  }
}