diff --git a/ansible/roles/tldraw-server/templates/configmap.yml.j2 b/ansible/roles/tldraw-server/templates/configmap.yml.j2
index f29a63a1..0d04f203 100644
--- a/ansible/roles/tldraw-server/templates/configmap.yml.j2
+++ b/ansible/roles/tldraw-server/templates/configmap.yml.j2
@@ -9,4 +9,5 @@ data:
   API_HOST: "http://api-svc:3030"
   WS_PATH_PREFIX: "/tldraw-server"
   LOG: "^(yjs|@y|server)"
+  FEATURE_PROMETHEUS_METRICS_ENABLED: true
   REDIS_SENTINEL_SERVICE_NAME: valkey-headless.{{ NAMESPACE }}.svc.cluster.local
diff --git a/ansible/roles/tldraw-server/templates/deployment.yml.j2 b/ansible/roles/tldraw-server/templates/deployment.yml.j2
index 811cd9b4..82ab2955 100644
--- a/ansible/roles/tldraw-server/templates/deployment.yml.j2
+++ b/ansible/roles/tldraw-server/templates/deployment.yml.j2
@@ -49,6 +49,9 @@ spec:
         - containerPort: 3345
           name: tldraw-ws
           protocol: TCP
+        - containerPort: 9090
+          name: tldraw-server-metrics
+          protocol: TCP
         envFrom:
         - configMapRef:
             name: tldraw-server-configmap
diff --git a/ansible/roles/tldraw-server/templates/pod-monitor.yml.j2 b/ansible/roles/tldraw-server/templates/pod-monitor.yml.j2
new file mode 100644
index 00000000..2d4837c2
--- /dev/null
+++ b/ansible/roles/tldraw-server/templates/pod-monitor.yml.j2
@@ -0,0 +1,14 @@
+apiVersion: monitoring.coreos.com/v1
+kind: PodMonitor
+metadata:
+  name: tldraw-server-pod-monitor
+  namespace: {{ NAMESPACE }}
+  labels:
+    app: tldraw-server
+spec:
+  selector:
+    matchLabels:
+      app: tldraw-server
+  endpoints:
+  - path: /metrics
+    port: tldraw-server-metrics
diff --git a/package-lock.json b/package-lock.json
index 27e03c53..e6aa2e15 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -8,9 +8,10 @@
 			"name": "tldraw-server",
 			"license": "AGPL-3.0",
 			"dependencies": {
-				"@y/redis": "github:hpi-schul-cloud/y-redis#e7a2965d85a668f4f97040f18c129af6eb21287a",
+				"@y/redis": "github:hpi-schul-cloud/y-redis#ee6d920f77c3d30521f49506797e3d71dd026903",
 				"ioredis": "^5.4.1",
 				"lib0": "^0.2.93",
+				"prom-client": "^15.1.3",
 				"uws": "github:uNetworking/uWebSockets.js#v20.40.0",
 				"y-protocols": "^1.0.6"
 			},
@@ -30,6 +31,14 @@
 			"resolved": "https://registry.npmjs.org/@ioredis/commands/-/commands-1.2.0.tgz",
 			"integrity": "sha512-Sx1pU8EM64o2BrqNpEO1CNLtKQwyhuXuqyfH7oGKCk+1a33d2r5saW8zNwm3j6BTExtjrv2BxTgzzkMwts6vGg=="
 		},
+		"node_modules/@opentelemetry/api": {
+			"version": "1.9.0",
+			"resolved": "https://registry.npmjs.org/@opentelemetry/api/-/api-1.9.0.tgz",
+			"integrity": "sha512-3giAOQvZiH5F9bMlMiv8+GSPMeqg0dbaeo58/0SlA9sxSqZhnUtxzX9/2FzyhS9sWQf5S0GJE0AKBrFqjpeYcg==",
+			"engines": {
+				"node": ">=8.0.0"
+			}
+		},
 		"node_modules/@redis/bloom": {
 			"version": "1.2.0",
 			"resolved": "https://registry.npmjs.org/@redis/bloom/-/bloom-1.2.0.tgz",
@@ -182,8 +191,9 @@
 		},
 		"node_modules/@y/redis": {
 			"version": "0.1.6",
-			"resolved": "git+ssh://git@github.com/hpi-schul-cloud/y-redis.git#e7a2965d85a668f4f97040f18c129af6eb21287a",
-			"integrity": "sha512-k+3kCrhUGPt/g3jTtv4nP+Pkhl9Vi/T5Xic47Jnxpt2kDTEtyJpElCb7OvyNfx7BmNOmTTC6c99Ino7UB93rLA==",
+			"resolved": "git+ssh://git@github.com/hpi-schul-cloud/y-redis.git#ee6d920f77c3d30521f49506797e3d71dd026903",
+			"integrity": "sha512-DvBQqqmzppHC1QvAECyr3i04FEId0lCOCOzYNjL1SYi3r+VmbVHINIwl9GIrGHXmMPTpB7bbtTwiD29M/DyhEw==",
+			"license": "AGPL-3.0 OR PROPRIETARY",
 			"dependencies": {
 				"ioredis": "^5.4.1",
 				"lib0": "^0.2.93",
@@ -266,6 +276,11 @@
 				"url": "https://github.com/sponsors/sindresorhus"
 			}
 		},
+		"node_modules/bintrees": {
+			"version": "1.0.2",
+			"resolved": "https://registry.npmjs.org/bintrees/-/bintrees-1.0.2.tgz",
+			"integrity": "sha512-VOMgTMwjAaUG580SXn3LacVgjurrbMme7ZZNYGSSV7mmtY6QQRh0Eg3pwIcntQ77DErK1L0NxkbetjcoXzVwKw=="
+		},
 		"node_modules/block-stream2": {
 			"version": "2.1.0",
 			"resolved": "https://registry.npmjs.org/block-stream2/-/block-stream2-2.1.0.tgz",
@@ -982,6 +997,18 @@
 				"url": "https://github.com/prettier/prettier?sponsor=1"
 			}
 		},
+		"node_modules/prom-client": {
+			"version": "15.1.3",
+			"resolved": "https://registry.npmjs.org/prom-client/-/prom-client-15.1.3.tgz",
+			"integrity": "sha512-6ZiOBfCywsD4k1BN9IX0uZhF+tJkV8q8llP64G5Hajs4JOeVLPCwpPVcpXy3BwYiUGgyJzsJJQeOIv7+hDSq8g==",
+			"dependencies": {
+				"@opentelemetry/api": "^1.4.0",
+				"tdigest": "^0.1.1"
+			},
+			"engines": {
+				"node": "^16 || ^18 || >=20"
+			}
+		},
 		"node_modules/pstree.remy": {
 			"version": "1.1.8",
 			"resolved": "https://registry.npmjs.org/pstree.remy/-/pstree.remy-1.1.8.tgz",
@@ -1036,9 +1063,6 @@
 			"version": "4.7.0",
 			"resolved": "https://registry.npmjs.org/redis/-/redis-4.7.0.tgz",
 			"integrity": "sha512-zvmkHEAdGMn+hMRXuMBtu4Vo5P6rHQjLoHftu+lBqq8ZTA3RCVC/WzD790bkKKiNFp7d5/9PcSD19fJyyRvOdQ==",
-			"workspaces": [
-				"./packages/*"
-			],
 			"dependencies": {
 				"@redis/bloom": "1.2.0",
 				"@redis/client": "1.6.0",
@@ -1184,6 +1208,14 @@
 				"node": ">=4"
 			}
 		},
+		"node_modules/tdigest": {
+			"version": "0.1.2",
+			"resolved": "https://registry.npmjs.org/tdigest/-/tdigest-0.1.2.tgz",
+			"integrity": "sha512-+G0LLgjjo9BZX2MfdvPfH+MKLCrxlXSYec5DaPYP1fe6Iyhf0/fSmJ0bFiZ1F8BT6cGXl2LpltQptzjXKWEkKA==",
+			"dependencies": {
+				"bintrees": "1.0.2"
+			}
+		},
 		"node_modules/through2": {
 			"version": "4.0.2",
 			"resolved": "https://registry.npmjs.org/through2/-/through2-4.0.2.tgz",
diff --git a/package.json b/package.json
index 2eb9b107..d6514aa5 100644
--- a/package.json
+++ b/package.json
@@ -14,9 +14,10 @@
 		"test": "echo \"Error: no test specified\" && exit 1"
 	},
 	"dependencies": {
-		"@y/redis": "github:hpi-schul-cloud/y-redis#e7a2965d85a668f4f97040f18c129af6eb21287a",
+		"@y/redis": "github:hpi-schul-cloud/y-redis#ee6d920f77c3d30521f49506797e3d71dd026903",
 		"ioredis": "^5.4.1",
 		"lib0": "^0.2.93",
+		"prom-client": "^15.1.3",
 		"uws": "github:uNetworking/uWebSockets.js#v20.40.0",
 		"y-protocols": "^1.0.6"
 	},
diff --git a/src/metrics.js b/src/metrics.js
new file mode 100644
index 00000000..ad355f97
--- /dev/null
+++ b/src/metrics.js
@@ -0,0 +1,33 @@
+import { number } from 'lib0';
+import * as env from 'lib0/environment';
+import { Gauge, register } from 'prom-client';
+import * as uws from 'uws';
+
+const openConnectionsGauge = new Gauge({
+	name: 'tldraw_open_connections',
+	help: 'Number of open WebSocket connections on tldraw-server.',
+});
+
+export const incOpenConnectionsGauge = () => {
+	openConnectionsGauge.inc();
+};
+
+export const decOpenConnectionsGauge = () => {
+	openConnectionsGauge.dec();
+};
+
+export const exposeMetricsToPrometheus = () => {
+	const route = env.getConf('prometheus-metrics-route') ?? '/metrics';
+	const port = number.parseInt(env.getConf('prometheus-metrics-port') ?? '9090');
+
+	const app = uws.App({});
+
+	app.get(route, async (res) => {
+		const metrics = await register.metrics();
+		res.end(metrics);
+	});
+
+	app.listen(port, () => {
+		console.log('Prometheus metrics exposed on port 9090');
+	});
+};
diff --git a/src/server.js b/src/server.js
index b062f37f..6d664182 100644
--- a/src/server.js
+++ b/src/server.js
@@ -5,6 +5,7 @@ import * as logging from 'lib0/logging';
 import * as number from 'lib0/number';
 import * as promise from 'lib0/promise';
 import * as uws from 'uws';
+import { decOpenConnectionsGauge, exposeMetricsToPrometheus, incOpenConnectionsGauge } from './metrics.js';
 import { redis } from './redis.js';
 import { initStorage } from './storage.js';
 
@@ -34,7 +35,18 @@ export const createYWebsocketServer = async ({ redisPrefix = 'y', port, store })
 
 	const app = uws.App({});
 
-	await registerYWebsocketServer(app, `${wsPathPrefix}/:room`, store, checkAuthz, { redisPrefix }, redis);
+	await registerYWebsocketServer(
+		app,
+		`${wsPathPrefix}/:room`,
+		store,
+		checkAuthz,
+		{
+			redisPrefix,
+			openWsCallback,
+			closeWsCallback,
+		},
+		redis,
+	);
 
 	await promise.create((resolve, reject) => {
 		app.listen(port, (token) => {
@@ -94,8 +106,20 @@ const createAuthzRequestOptions = (room, token) => {
 	return requestOptions;
 };
 
+const openWsCallback = () => {
+	incOpenConnectionsGauge();
+};
+
+const closeWsCallback = () => {
+	decOpenConnectionsGauge();
+};
+
 const port = number.parseInt(env.getConf('port') || '3345');
 const redisPrefix = env.getConf('redis-prefix') || 'y';
 const store = await initStorage();
 
+if (env.getConf('feature-prometheus-metrics-enabled') === 'true') {
+	exposeMetricsToPrometheus();
+}
+
 createYWebsocketServer({ port, store, redisPrefix });