Grafana dashboard: Squid Dashboard
Description: Squid Statistics using Telegraf and InfluxD

Installation steps:
https://github.com/molu8bits/squid-grafana-monitoring

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      "datasource": "${DS_TELEGRAF}",
      "fill": 1,
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        "x": 12,
        "y": 14
      },
      "id": 22,
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        "alignAsTable": true,
        "avg": false,
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        "hideEmpty": false,
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        "rightSide": false,
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        "total": false,
        "values": true
      },
      "lines": true,
      "linewidth": 1,
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      "nullPointMode": "null",
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      "pointradius": 5,
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      "renderer": "flot",
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      "spaceLength": 10,
      "stack": false,
      "steppedLine": false,
      "targets": [
        {
          "alias": "cacheServerInKb",
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            {
              "params": [
                "$__interval"
              ],
              "type": "time"
            },
            {
              "params": [
                "null"
              ],
              "type": "fill"
            }
          ],
          "measurement": "snmpsquid",
          "orderByTime": "ASC",
          "policy": "default",
          "query": "SELECT non_negative_difference(mean(\"cacheProtoClientHttpRequests\")) FROM \"snmpsquid\" WHERE $timeFilter GROUP BY time(1m), \"ala\" fill(null)\n",
          "rawQuery": false,
          "refId": "A",
          "resultFormat": "time_series",
          "select": [
            [
              {
                "params": [
                  "cacheServerInKb"
                ],
                "type": "field"
              },
              {
                "params": [],
                "type": "mean"
              },
              {
                "params": [],
                "type": "non_negative_difference"
              }
            ]
          ],
          "tags": []
        },
        {
          "alias": "cacheServerOutKb",
          "groupBy": [
            {
              "params": [
                "$__interval"
              ],
              "type": "time"
            },
            {
              "params": [
                "null"
              ],
              "type": "fill"
            }
          ],
          "measurement": "snmpsquid",
          "orderByTime": "ASC",
          "policy": "default",
          "refId": "B",
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          "select": [
            [
              {
                "params": [
                  "cacheServerOutKb"
                ],
                "type": "field"
              },
              {
                "params": [],
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              },
              {
                "params": [
                  "10s"
                ],
                "type": "non_negative_derivative"
              }
            ]
          ],
          "tags": []
        }
      ],
      "thresholds": [],
      "timeFrom": null,
      "timeShift": null,
      "title": "Squid cacheServerInKb/cacheServerOutKb",
      "tooltip": {
        "shared": true,
        "sort": 0,
        "value_type": "individual"
      },
      "type": "graph",
      "xaxis": {
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        "show": true,
        "values": []
      },
      "yaxes": [
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          "show": true
        },
        {
          "format": "short",
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          "logBase": 1,
          "max": null,
          "min": null,
          "show": true
        }
      ],
      "yaxis": {
        "align": false,
        "alignLevel": null
      }
    },
    {
      "aliasColors": {
        "snmpsquid.cacheCurrentSwapSize": "#962d82"
      },
      "bars": false,
      "dashLength": 10,
      "dashes": false,
      "datasource": "${DS_TELEGRAF}",
      "fill": 1,
      "gridPos": {
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        "x": 0,
        "y": 22
      },
      "id": 12,
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        "show": true,
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        "values": false
      },
      "lines": true,
      "linewidth": 1,
      "links": [],
      "nullPointMode": "null",
      "percentage": false,
      "pointradius": 5,
      "points": false,
      "renderer": "flot",
      "seriesOverrides": [],
      "spaceLength": 10,
      "stack": false,
      "steppedLine": false,
      "targets": [
        {
          "groupBy": [],
          "measurement": "snmpsquid",
          "orderByTime": "ASC",
          "policy": "default",
          "refId": "A",
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          "select": [
            [
              {
                "params": [
                  "cacheCurrentSwapSize"
                ],
                "type": "field"
              }
            ]
          ],
          "tags": []
        }
      ],
      "thresholds": [],
      "timeFrom": null,
      "timeShift": null,
      "title": "Cache Swap Usage",
      "tooltip": {
        "shared": true,
        "sort": 0,
        "value_type": "individual"
      },
      "type": "graph",
      "xaxis": {
        "buckets": null,
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        "show": true,
        "values": []
      },
      "yaxes": [
        {
          "format": "kbytes",
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          "show": true
        },
        {
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          "show": true
        }
      ],
      "yaxis": {
        "align": false,
        "alignLevel": null
      }
    },
    {
      "aliasColors": {
        "snmpsquid.cacheClients": "#e0752d"
      },
      "bars": false,
      "dashLength": 10,
      "dashes": false,
      "datasource": "${DS_TELEGRAF}",
      "fill": 1,
      "gridPos": {
        "h": 9,
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        "x": 12,
        "y": 22
      },
      "id": 10,
      "legend": {
        "avg": false,
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        "show": true,
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        "values": false
      },
      "lines": true,
      "linewidth": 1,
      "links": [],
      "nullPointMode": "null",
      "percentage": false,
      "pointradius": 5,
      "points": false,
      "renderer": "flot",
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      "spaceLength": 10,
      "stack": false,
      "steppedLine": false,
      "targets": [
        {
          "groupBy": [],
          "measurement": "snmpsquid",
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          "policy": "default",
          "refId": "A",
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          "select": [
            [
              {
                "params": [
                  "cacheClients"
                ],
                "type": "field"
              }
            ]
          ],
          "tags": []
        }
      ],
      "thresholds": [],
      "timeFrom": null,
      "timeShift": null,
      "title": "Number of Cache Clients",
      "tooltip": {
        "shared": true,
        "sort": 0,
        "value_type": "individual"
      },
      "type": "graph",
      "xaxis": {
        "buckets": null,
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        "show": true,
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      },
      "yaxes": [
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        },
        {
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          "show": true
        }
      ],
      "yaxis": {
        "align": false,
        "alignLevel": null
      }
    }
  ],
  "refresh": false,
  "schemaVersion": 16,
  "style": "dark",
  "tags": [],
  "templating": {
    "list": [
      {
        "auto": true,
        "auto_count": 30,
        "auto_min": "10s",
        "current": {
          "text": "10s",
          "value": "10s"
        },
        "hide": 0,
        "label": null,
        "name": "interval",
        "options": [
          {
            "selected": false,
            "text": "auto",
            "value": "$__auto_interval_interval"
          },
          {
            "selected": true,
            "text": "10s",
            "value": "10s"
          },
          {
            "selected": false,
            "text": "20s",
            "value": "20s"
          },
          {
            "selected": false,
            "text": "30s",
            "value": "30s"
          },
          {
            "selected": false,
            "text": "1m",
            "value": "1m"
          },
          {
            "selected": false,
            "text": "10m",
            "value": "10m"
          },
          {
            "selected": false,
            "text": "30m",
            "value": "30m"
          },
          {
            "selected": false,
            "text": "1h",
            "value": "1h"
          },
          {
            "selected": false,
            "text": "6h",
            "value": "6h"
          },
          {
            "selected": false,
            "text": "12h",
            "value": "12h"
          },
          {
            "selected": false,
            "text": "1d",
            "value": "1d"
          },
          {
            "selected": false,
            "text": "7d",
            "value": "7d"
          },
          {
            "selected": false,
            "text": "14d",
            "value": "14d"
          },
          {
            "selected": false,
            "text": "30d",
            "value": "30d"
          }
        ],
        "query": "10s,20s,30s,1m,10m,30m,1h,6h,12h,1d,7d,14d,30d",
        "refresh": 2,
        "skipUrlSync": false,
        "type": "interval"
      }
    ]
  },
  "time": {
    "from": "now-6h",
    "to": "now"
  },
  "timepicker": {
    "refresh_intervals": [
      "5s",
      "10s",
      "30s",
      "1m",
      "5m",
      "15m",
      "30m",
      "1h",
      "2h",
      "1d"
    ],
    "time_options": [
      "5m",
      "15m",
      "1h",
      "6h",
      "12h",
      "24h",
      "2d",
      "7d",
      "30d"
    ]
  },
  "timezone": "",
  "title": "Squid Dashboard",
  "uid": "yqp4jexmk",
  "version": 24,
  "description": "Squid Statistics using Telegraf and InfluxD"
}