Added a rateLimiter.

package.json

@@ -5,6 +5,7 @@
     "config": "^3.3.9",
     "cors": "^2.8.5",
     "express": "^4.18.2",
+    "express-rate-limit": "^7.1.5",
     "joi": "^17.11.0",
     "lodash": "^4.17.21",
     "mongoose": "^8.0.3",
@@ -17,7 +18,6 @@
     "test": "jest",
     "start": "ts-node src/server.ts",
     "benchmark": "ts-node benchmark/timeDistribution"
-
   },
   "devDependencies": {
     "@types/config": "^3.3.3",

src/routes/isOnline.ts

@@ -1,7 +1,8 @@
 import express, { Request, Response } from 'express';
 const router = express.Router();
+
 router.get('/', (_req: Request, res: Response) => {
-    res.status(200);
+    res.status(200).send('OK');
 });
 
 export = router;

src/server.ts

@@ -3,12 +3,14 @@ import { configureCors } from './startup/cors';
 import isOnline from './routes/isOnline';
 import project from './routes/project';
 import connectToDatabase from './startup/db';
+import addRateLimiter from './startup/limitRate';
 
 const app: Express = express();
 
 // startup
 configureCors(app);
 connectToDatabase();
+addRateLimiter(app);
 
 app.use(express.json());
 app.use('/', isOnline);

src/startup/limitRate.ts

@@ -0,0 +1,12 @@
+import { Express } from 'express';
+import RateLimit from 'express-rate-limit';
+
+const addRateLimiter = async (app: Express) => {
+    const limiter = RateLimit({
+        windowMs: 15 * 60 * 1000, // 15 minutes
+        max: 100, // max 100 requests per windowMs
+    });
+
+    app.use(limiter);
+};
+export default addRateLimiter;