diff --git a/src/index.ts b/src/index.ts
index 0034fe5..44e7e59 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,13 +1,14 @@
+// AI CORE
+
 import * as WebSocket from 'ws';
 import * as request from 'request-promise-native';
-const ReconnectingWebSocket = require('../node_modules/reconnecting-websocket/dist/reconnecting-websocket-cjs.js');
-
 import serifs from './serifs';
 import config from './config';
 import IModule from './module';
 import MessageLike from './message-like';
-
 import ReversiModule from './modules/reversi';
+import ServerModule from './modules/server';
+const ReconnectingWebSocket = require('../node_modules/reconnecting-websocket/dist/reconnecting-websocket-cjs.js');
 
 /**
  * 藍
@@ -45,6 +46,7 @@ export default class 藍 {
 	}
 
 	public install = (module: IModule) => {
+		module.install(this);
 		this.modules.push(module);
 	}
 
@@ -120,6 +122,9 @@ export default class 藍 {
 
 const ai = new 藍();
 
+const serverModule = new ServerModule();
+ai.install(serverModule);
+
 if (config.reversiEnabled) {
 	const reversiModule = new ReversiModule();
 	ai.install(reversiModule);
diff --git a/src/modules/reversi/index.ts b/src/modules/reversi/index.ts
index aadf38a..4bf7821 100644
--- a/src/modules/reversi/index.ts
+++ b/src/modules/reversi/index.ts
@@ -1,12 +1,11 @@
 import * as childProcess from 'child_process';
-
 const ReconnectingWebSocket = require('../../../node_modules/reconnecting-websocket/dist/reconnecting-websocket-cjs.js');
-
 import 藍 from '../..';
 import IModule from '../../module';
 import serifs from '../../serifs';
 import config from '../../config';
 import MessageLike from '../../message-like';
+import * as WebSocket from 'ws';
 
 export default class ReversiModule implements IModule {
 	private ai: 藍;
@@ -56,7 +55,6 @@ export default class ReversiModule implements IModule {
 		}
 	}
 
-
 	private onReversiConnectionMessage = (msg: any) => {
 		switch (msg.type) {
 
diff --git a/src/modules/server/index.ts b/src/modules/server/index.ts
new file mode 100644
index 0000000..93ff02d
--- /dev/null
+++ b/src/modules/server/index.ts
@@ -0,0 +1,81 @@
+import * as childProcess from 'child_process';
+import * as WebSocket from 'ws';
+import 藍 from '../..';
+import IModule from '../../module';
+import serifs from '../../serifs';
+import config from '../../config';
+const ReconnectingWebSocket = require('../../../node_modules/reconnecting-websocket/dist/reconnecting-websocket-cjs.js');
+
+export default class ServerModule implements IModule {
+	private ai: 藍;
+	private connection?: any;
+	private rebootScheduled = false;
+	private rebootTimer: any;
+	private rebootTimerSub: any;
+
+	public install = (ai: 藍) => {
+		this.ai = ai;
+
+		this.connection = new ReconnectingWebSocket(`${config.wsUrl}/server-stats`, [], {
+			WebSocket: WebSocket
+		});
+
+		this.connection.addEventListener('open', () => {
+			console.log('server-stats stream opened');
+		});
+
+		this.connection.addEventListener('close', () => {
+			console.log('server-stats stream closed');
+		});
+
+		this.connection.addEventListener('message', message => {
+			const msg = JSON.parse(message.data);
+
+			this.onConnectionMessage(msg);
+		});
+	}
+
+	private onConnectionMessage = (msg: any) => {
+		switch (msg.type) {
+
+			case 'stats': {
+				this.onStats(msg.body);
+				break;
+			}
+
+			default:
+				break;
+		}
+	}
+
+	private onStats = async (stats: any) => {
+		const memUsage = Math.round((stats.mem.used / stats.mem.total) * 100);
+
+		console.log(`[SERVER] MEM: ${memUsage}%`);
+
+		if (memUsage >= 90) {
+			this.scheduleReboot();
+		}
+	}
+
+	private scheduleReboot = () => {
+		if (this.rebootScheduled) return;
+
+		this.rebootScheduled = true;
+
+		this.ai.post({
+			text: serifs.REBOOT_SCHEDULED
+		});
+
+		this.rebootTimer = setTimeout(() => {
+			childProcess.exec('forever restartall');
+		}, 1000 * 60);
+
+		this.rebootTimerSub = setTimeout(() => {
+			this.ai.post({
+				cw: serifs.REBOOT,
+				text: serifs.REBOOT_DETAIL
+			});
+		}, 1000 * 50);
+	}
+}
diff --git a/src/serifs.ts b/src/serifs.ts
index fcb861d..d035b7b 100644
--- a/src/serifs.ts
+++ b/src/serifs.ts
@@ -7,5 +7,16 @@ export default {
 	/**
 	 * リバーシへの誘いを断るとき
 	 */
-	REVERSI_DECLINE: 'ごめんなさい、今リバーシはするなと言われてます...'
+	REVERSI_DECLINE: 'ごめんなさい、今リバーシはするなと言われてます...',
+
+	/**
+	 * (メモリが足りないので)再起動の予定が出来たとき
+	 */
+	REBOOT_SCHEDULED: 'サーバーの空きメモリが少なくなってきたので、1分後にサーバー再起動しますね！',
+
+	/**
+	 * まもなく再起動されるとき
+	 */
+	REBOOT: 'では、まもなくサーバーを再起動します！',
+	REBOOT_DETAIL: '(私も再起動に巻き込まれちゃうので、サーバーの再起動が完了したことのお知らせはできません...)'
 };