Add Redix and Poolboy dependencies, and implement RedixPool module

.gitignore

@@ -27,3 +27,7 @@ graphql_api_assignment-*.tar
 
 .cursor/
 
+.elixir_ls
+
+.env*
+

.iex.exs

@@ -0,0 +1,3 @@
+alias GraphqlApiAssignment.HashringCounter
+
+name = HashringCounter.hash_ring_name()

config/config.exs

@@ -11,7 +11,10 @@ config :graphql_api_assignment, GraphqlApiAssignment.Repo,
   database: "graphql_api_assignment_repo",
   username: "user",
   password: "password",
-  hostname: "localhost"
+  hostname: "localhost",
+  show_sensitive_data_on_connection_error: true,
+  log: :debug,
+  stacktrace: true
 
 config :graphql_api_assignment,
   ecto_repos: [GraphqlApiAssignment.Repo]
@@ -30,6 +33,18 @@ config :prometheus_telemetry,
   ecto_max_query_length: 150,
   ecto_known_query_module: nil
 
+config :request_cache_plug,
+  enabled?: true,
+  verbose?: false,
+  graphql_paths: ["/graphiql", "/graphql"],
+  request_cache_module: GraphqlApiAssignment.RedixPool
+
+config :libring,
+  rings: [
+    ring_a: [monitor_nodes: true],
+    ring_b: [monitor_nodes: true]
+  ]
+
 # Configures the endpoint
 config :graphql_api_assignment, GraphqlApiAssignmentWeb.Endpoint,
   url: [host: "localhost"],

config/test.exs

@@ -12,7 +12,11 @@ config :graphql_api_assignment, GraphqlApiAssignment.Repo,
   username: "user",
   password: "password",
   hostname: "localhost",
-  pool: Ecto.Adapters.SQL.Sandbox
+  pool: Ecto.Adapters.SQL.Sandbox,
+  show_sensitive_data_on_connection_error: true,
+  log: :debug,
+  stacktrace: true,
+  pool_size: 10
 
 # In test we don't send emails
 config :graphql_api_assignment, GraphqlApiAssignment.Mailer, adapter: Swoosh.Adapters.Test

docker-compose.yml

@@ -0,0 +1,41 @@
+networks:
+  monitoring:
+    driver: bridge
+
+services:
+  prometheus:
+    image: prom/prometheus:v3.1.0
+    container_name: prometheus
+    ports:
+      - "9090:9090"
+    volumes:
+      - ./prom_config.yml:/etc/prometheus/prometheus.yml
+    networks:
+      - monitoring
+
+
+  grafana:
+    image: grafana/grafana:11.6.0
+    container_name: grafana
+    ports:
+      - "3000:3000"
+    environment:
+      - GF_SECURITY_ADMIN_USER=admin
+      - GF_SECURITY_ADMIN_PASSWORD=admin
+    networks:
+      - monitoring
+    depends_on:
+      - prometheus
+
+  postgres:
+    image: postgres:14
+    container_name: postgres
+    restart: always
+    environment:
+      POSTGRES_USER: user
+      POSTGRES_PASSWORD: password
+      POSTGRES_DB: graphql_api_assignment_repo
+    ports:
+      - "5432:5432"
+    networks:
+      - monitoring

grafana/custom/hash_ring_export.json

@@ -0,0 +1,232 @@
+{
+    "annotations": {
+      "list": [
+        {
+          "builtIn": 1,
+          "datasource": {
+            "type": "grafana",
+            "uid": "-- Grafana --"
+          },
+          "enable": true,
+          "hide": true,
+          "iconColor": "rgba(0, 211, 255, 1)",
+          "name": "Annotations & Alerts",
+          "type": "dashboard"
+        }
+      ]
+    },
+    "editable": true,
+    "fiscalYearStartMonth": 0,
+    "graphTooltip": 0,
+    "id": 8,
+    "links": [],
+    "panels": [
+      {
+        "datasource": {
+          "type": "prometheus",
+          "uid": "eeifd9qqffev4c"
+        },
+        "fieldConfig": {
+          "defaults": {
+            "color": {
+              "mode": "palette-classic"
+            },
+            "custom": {
+              "axisBorderShow": false,
+              "axisCenteredZero": false,
+              "axisColorMode": "text",
+              "axisLabel": "",
+              "axisPlacement": "auto",
+              "barAlignment": 0,
+              "barWidthFactor": 0.6,
+              "drawStyle": "line",
+              "fillOpacity": 0,
+              "gradientMode": "none",
+              "hideFrom": {
+                "legend": false,
+                "tooltip": false,
+                "viz": false
+              },
+              "insertNulls": false,
+              "lineInterpolation": "linear",
+              "lineWidth": 1,
+              "pointSize": 5,
+              "scaleDistribution": {
+                "type": "linear"
+              },
+              "showPoints": "auto",
+              "spanNulls": false,
+              "stacking": {
+                "group": "A",
+                "mode": "none"
+              },
+              "thresholdsStyle": {
+                "mode": "off"
+              }
+            },
+            "mappings": [],
+            "thresholds": {
+              "mode": "absolute",
+              "steps": [
+                {
+                  "color": "green"
+                },
+                {
+                  "color": "red",
+                  "value": 80
+                }
+              ]
+            }
+          },
+          "overrides": []
+        },
+        "gridPos": {
+          "h": 8,
+          "w": 12,
+          "x": 0,
+          "y": 0
+        },
+        "id": 1,
+        "options": {
+          "legend": {
+            "calcs": [],
+            "displayMode": "list",
+            "placement": "bottom",
+            "showLegend": true
+          },
+          "tooltip": {
+            "hideZeros": false,
+            "mode": "single",
+            "sort": "none"
+          }
+        },
+        "pluginVersion": "11.6.0",
+        "targets": [
+          {
+            "datasource": {
+              "type": "prometheus",
+              "uid": "eeifd9qqffev4c"
+            },
+            "editorMode": "code",
+            "expr": "rate(grapql_api_hash_ring_get_duration_millisecond_bucket[1m])",
+            "legendFormat": "__auto",
+            "range": true,
+            "refId": "A"
+          }
+        ],
+        "title": "Hash Ring Get Duration",
+        "type": "timeseries"
+      },
+      {
+        "datasource": {
+          "type": "prometheus",
+          "uid": "eeifd9qqffev4c"
+        },
+        "fieldConfig": {
+          "defaults": {
+            "color": {
+              "mode": "palette-classic"
+            },
+            "custom": {
+              "axisBorderShow": false,
+              "axisCenteredZero": false,
+              "axisColorMode": "text",
+              "axisLabel": "",
+              "axisPlacement": "auto",
+              "barAlignment": 0,
+              "barWidthFactor": 0.6,
+              "drawStyle": "line",
+              "fillOpacity": 0,
+              "gradientMode": "none",
+              "hideFrom": {
+                "legend": false,
+                "tooltip": false,
+                "viz": false
+              },
+              "insertNulls": false,
+              "lineInterpolation": "linear",
+              "lineWidth": 1,
+              "pointSize": 5,
+              "scaleDistribution": {
+                "type": "linear"
+              },
+              "showPoints": "auto",
+              "spanNulls": false,
+              "stacking": {
+                "group": "A",
+                "mode": "none"
+              },
+              "thresholdsStyle": {
+                "mode": "off"
+              }
+            },
+            "mappings": [],
+            "thresholds": {
+              "mode": "absolute",
+              "steps": [
+                {
+                  "color": "green"
+                },
+                {
+                  "color": "red",
+                  "value": 80
+                }
+              ]
+            }
+          },
+          "overrides": []
+        },
+        "gridPos": {
+          "h": 8,
+          "w": 12,
+          "x": 12,
+          "y": 0
+        },
+        "id": 2,
+        "options": {
+          "legend": {
+            "calcs": [],
+            "displayMode": "list",
+            "placement": "bottom",
+            "showLegend": true
+          },
+          "tooltip": {
+            "hideZeros": false,
+            "mode": "single",
+            "sort": "none"
+          }
+        },
+        "pluginVersion": "11.6.0",
+        "targets": [
+          {
+            "datasource": {
+              "type": "prometheus",
+              "uid": "eeifd9qqffev4c"
+            },
+            "editorMode": "code",
+            "expr": "rate(grapql_api_hash_ring_put_duration_millisecond_bucket[1m])",
+            "legendFormat": "__auto",
+            "range": true,
+            "refId": "A"
+          }
+        ],
+        "title": "Hash Ring Put Duration",
+        "type": "timeseries"
+      }
+    ],
+    "preload": false,
+    "schemaVersion": 41,
+    "tags": [],
+    "templating": {
+      "list": []
+    },
+    "time": {
+      "from": "now-6h",
+      "to": "now"
+    },
+    "timepicker": {},
+    "timezone": "browser",
+    "title": "Hash Ring",
+    "uid": "feifig66c1n9cb",
+    "version": 1
+  }