feat(gateway): add rate limiting to gateway

apis/gateway/index.ts

@@ -1,18 +1,33 @@
 import express, { Express, Request, Response } from "express";
 import proxy from "express-http-proxy";
+import rateLimit from "express-rate-limit";
 
 const app: Express = express();
+
+const limiter = rateLimit({
+    windowMs: 15 * 60 * 1000,
+    max: 50,
+    message: 'Too many requests, please try again later.',
+});
+
+app.use(limiter);
 app.use(express.json());
 app.use(express.urlencoded({ extended: true }));
 
 app.get("/", (req: Request, res: Response) => {
     res.send("Hello, TypeScript Node Express! Gateway");
 });
 
-const auth = proxy("http://authcommand:5000");
-const query = proxy("http://authquery:5000");
+const authProxy = proxy('http://authcommand:5000', {
+    preserveHostHdr: true
+});
+
+const queryProxy = proxy('http://authquery:5000', {
+    preserveHostHdr: true
+});
 
-app.use("/auth", auth);
+app.use('/auth', authProxy);
+app.use('/query', queryProxy);
 
 const server = app.listen(8080, () => {
     console.log("Gateway is Listening to Port 8080");

apis/gateway/package.json

@@ -19,7 +19,8 @@
     "cors": "^2.8.5",
     "dotenv": "^16.4.7",
     "express": "^4.21.2",
-    "express-http-proxy": "^2.1.1"
+    "express-http-proxy": "^2.1.1",
+    "express-rate-limit": "^7.5.0"
   },
   "devDependencies": {
     "@types/cors": "^2.8.17",

docker-compose.yml

@@ -9,28 +9,27 @@ services:
       - "5001:8080"
     depends_on:
       - authcommand
+      - authquery
 
   authcommand:
     container_name: authcommand
     build:
       context: ./apis/authCommand
     env_file: .env
+    environment:
+      - NODE_ENV=production
     depends_on:
       - "mongodb"
+
+  authquery:
+    container_name: authQuery
+    build:
+      context: ./apis/authQuery
+    env_file: .env
     environment:
       - NODE_ENV=production
-
-  # authquery:
-    # container_name: authQuery
-    # build:
-    #   context: ./apis/authQuery
-    # env_file: .env
-    # volumes:
-    #   - ./apis:/api
-    # ports:
-    #   - 8082:3000
-    # depends_on:
-    #   - mongodb
+    depends_on:
+      - mongodb
 
   # MaintenanceCommand:
     # container_name: MaintenanceCommand